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Chabala C, Roucher C, Ton Nu Nguyet MH, Babirekere E, Inambao M, Businge G, Kapula C, Shankalala P, Nduna B, Mulenga V, Graham S, Wobudeya E, Bonnet M, Marcy O. Development of tuberculosis treatment decision algorithms in children below 5 years hospitalised with severe acute malnutrition in Zambia and Uganda: a prospective diagnostic cohort study. EClinicalMedicine 2024; 73:102688. [PMID: 39007063 PMCID: PMC11245985 DOI: 10.1016/j.eclinm.2024.102688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 05/24/2024] [Accepted: 05/30/2024] [Indexed: 07/16/2024] Open
Abstract
Background In children with severe acute malnutrition (SAM) tuberculosis is common, challenging to diagnose, and often fatal. We developed tuberculosis treatment decision algorithms (TDAs) for children under the age of 5 years with SAM. Methods In this prospective diagnostic study, we enrolled and followed up children aged <60 months hospitalised with SAM at three tertiary hospitals in Zambia and Uganda from 4 November 2019 to 20 June 2022. We included children aged 2-59 months with SAM as defined by WHO and hospitalised following the WHO clinical criteria. We excluded children with current or history of antituberculosis treatment within the preceding 3 months. They underwent tuberculosis symptom screening, clinical assessment, chest X-ray, abdominal ultrasound, Xpert MTB/RIF Ultra (Ultra) and culture on respiratory and stool samples with 6 months follow-up. Tuberculosis was retrospectively defined using the 2015 standard case definition for childhood tuberculosis. We used logistic regression to develop diagnostic prediction models for a one-step diagnosis and a two-step screening and diagnostic approaches. We derived scores from models using WHO-recommended thresholds for sensitivity and proposed TDAs. This study is registered with ClinicalTrials.gov, NCT04240990. Findings Of 1906 children hospitalised with SAM during the study period, 1230 were screened, 1152 were eligible and 603 were enrolled. Of the 603 children enrolled-median age 15 (inter-quartile range (IQR): 11-20) months and 65 (11.0%) living with HIV-114 (18.9%) were diagnosed with tuberculosis, including 51 (8.5%) with microbiological confirmation and 104 (17.2%) initiated treatment at a median of 6(IQR: 2-10) days after inclusion. 108 children were retrospectively classified as having tuberculosis resulting in a prevalence of 17.9% (95% confidence intervals (CI): 15.1; 21.2). 75 (69.4%) children with tuberculosis reported cough of any duration, 32 (29.6%) cough ≥2 weeks and 11 (10.2%) tuberculosis contact history. 535 children had complete data and were included in the diagnostic prediction model. The one-step diagnostic model had 15 predictors, including Ultra, clinical, radiographic, and abdominal features, an area under the receiving operating curve (AUROC) of 0.910, and derived TDA sensitivity of 86.14% (95% CI: 78.07-91.56) and specificity of 80.88% (95% CI: 76.91-84.30). The two-step model had AUROCs of 0.750 and 0.912 for screening and diagnosis, respectively, and derived combined TDA sensitivity of 79.21% (95% CI: 70.30-85.98) and a specificity of 83.64% (95% CI: 79.87-86.82). Interpretation Tuberculosis prevalence was high among hospitalised children with SAM, with atypical clinical features. TDAs achieved satisfactory diagnostic accuracy and could be used to improve diagnosis in this vulnerable group. Funding Unitaid.
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Affiliation(s)
- Chishala Chabala
- School of Medicine, University of Zambia, Lusaka, Zambia
- University Teaching Hospitals-Children's Hospital, Lusaka, Zambia
| | - Clémentine Roucher
- University of Bordeaux, Inserm UMR 1219, Institut de Recherche pour le Développement (IRD), Bordeaux, France
| | - Minh Huyen Ton Nu Nguyet
- University of Bordeaux, Inserm UMR 1219, Institut de Recherche pour le Développement (IRD), Bordeaux, France
| | | | | | - Gerald Businge
- Makerere University-John Hopkins University Research Collaboration, Kampala, Uganda
| | - Chifunda Kapula
- University Teaching Hospitals-Children's Hospital, Lusaka, Zambia
| | | | - Bwendo Nduna
- Arthur Davidson Children's Hospital, Ndola, Zambia
| | - Veronica Mulenga
- School of Medicine, University of Zambia, Lusaka, Zambia
- University Teaching Hospitals-Children's Hospital, Lusaka, Zambia
| | - Stephen Graham
- Centre for International Child Health, The University of Melbourne, Department of Paediatrics and Murdoch Children's Research Institute, Royal Children's Hospital Melbourne, VIC, Australia
| | - Eric Wobudeya
- Makerere University-John Hopkins University Research Collaboration, Kampala, Uganda
| | - Maryline Bonnet
- TransVIHMI, University of Montpellier, IRD, Inserm, Montpellier, France
| | - Olivier Marcy
- University of Bordeaux, Inserm UMR 1219, Institut de Recherche pour le Développement (IRD), Bordeaux, France
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Khambati N, Song R, Smith JP, Bijker EM, McCarthy K, Click ES, Mchembere W, Okumu A, Musau S, Okeyo E, Perez-Velez CM, Cain K. Feasibility and utility of a combined nasogastric-tube-and-string-test device for bacteriologic confirmation of pulmonary tuberculosis in young children. Diagn Microbiol Infect Dis 2024; 109:116302. [PMID: 38657352 PMCID: PMC11128341 DOI: 10.1016/j.diagmicrobio.2024.116302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 04/03/2024] [Accepted: 04/10/2024] [Indexed: 04/26/2024]
Abstract
For microbiological confirmation of pediatric pulmonary tuberculosis (PTB), gastric aspirates (GA) are often operationally unfeasible without hospitalization, and the encapsulated orogastric string test is not easily swallowed in young children. The Combined-NasoGastric-Tube-and-String-Test (CNGTST) enables dual collection of GA and string specimens. In a prospective cohort study in Kenya, we examined its feasibility in children under five with presumptive PTB and compared the bacteriological yield of string to GA. Paired GA and string samples were successfully collected in 95.6 % (281/294) of children. Mycobacterium tuberculosis was isolated from 7.0 % (38/541) of GA and 4.3 % (23/541) of string samples, diagnosing 8.2 % (23/281) of children using GA and 5.3 % (15/281) using string. The CNGTST was feasible in nearly all children. Yield from string was two-thirds that of GA despite a half-hour median dwelling time. In settings where the feasibility of hospitalisation for GA is uncertain, the string component can be used to confirm PTB.
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Affiliation(s)
- Nisreen Khambati
- Oxford Vaccine Group, Department of Paediatrics, University of Oxford, Oxford, UK.
| | - Rinn Song
- Oxford Vaccine Group, Department of Paediatrics, University of Oxford, Oxford, UK; Division of Infectious Diseases, Boston Children's Hospital, Boston, MA USA; Department of Pediatrics, Harvard Medical School, Boston, MA USS
| | - Jonathan P Smith
- Division of Global HIV and Tuberculosis, Centers for Disease Control and Prevention, Atlanta, Georgia, United States; Department of Health Policy and Management, Yale School of Public Health, New Haven, Connecticut, United States
| | - Else Margreet Bijker
- Oxford Vaccine Group, Department of Paediatrics, University of Oxford, Oxford, UK; Department of Pediatrics, Maastricht University Medical Center, MosaKids Children's Hospital, Maastricht, the Netherlands
| | - Kimberly McCarthy
- Division of Global HIV and Tuberculosis, Centers for Disease Control and Prevention, Atlanta, Georgia, United States
| | - Eleanor S Click
- Division of Global HIV and Tuberculosis, Centers for Disease Control and Prevention, Atlanta, Georgia, United States
| | - Walter Mchembere
- Kenya Medical Research Institute - Center for Global Health Research, Kisumu, Kenya
| | - Albert Okumu
- Kenya Medical Research Institute - Center for Global Health Research, Kisumu, Kenya
| | - Susan Musau
- Kenya Medical Research Institute - Center for Global Health Research, Kisumu, Kenya
| | - Elisha Okeyo
- Kenya Medical Research Institute - Center for Global Health Research, Kisumu, Kenya
| | | | - Kevin Cain
- Division of Global HIV and Tuberculosis, Centers for Disease Control and Prevention, Atlanta, Georgia, United States
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3
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Mane SS, Shrotriya P. Current Epidemiology of Pediatric Tuberculosis. Indian J Pediatr 2024; 91:711-716. [PMID: 37919487 DOI: 10.1007/s12098-023-04910-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 10/16/2023] [Indexed: 11/04/2023]
Abstract
Tuberculosis (TB) is a communicable disease that is a major cause of ill health and one of the leading causes of death worldwide. Children act as reservoirs of infection out of which future cases develop. Without the successful detection and treatment of TB infection and disease in children, elimination strategies for TB will be ineffective. India has a severe problem with TB in children, which accounts for around 31% of the global pediatric TB load. However, over the past 10 y, children have consistently made up 6-7% of all patients treated yearly under the National Tuberculosis Elimination Programme (NTEP). There is an estimated detection gap of 56% in India, which is the reason for many missed cases of TB in children. Only 3% of children less than 14 y with MDR/RR-TB, are reported from India, which again is an underestimation of the actual incident cases. Population density, housing and living conditions, environmental conditions, cultural practices, age of the child, exposure to tobacco and other environmental pollutants, the virulence of the mycobacterial strain and their genetics, host genetics, BCG vaccination, malnutrition, immunodeficiency are some of the risk factors for TB exposure, infection and disease in children. Understanding the natural history as well as the epidemiology of childhood TB is important to assess which children are the most vulnerable. It would also guide us in understanding the burden of pediatric TB on a regional, national, or global level, thus facilitating the appropriate targeting of health resources and also guiding policy-making decisions.
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Affiliation(s)
- Sushant Satish Mane
- State Pediatric Center of Excellence for TB, Department of Pediatrics, Grant Govt. Medical College, Sir JJ Group of Hospitals, Mumbai, India.
| | - Pragya Shrotriya
- State Pediatric Center of Excellence for TB, Department of Pediatrics, Grant Govt. Medical College, Sir JJ Group of Hospitals, Mumbai, India
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Moretó-Planas L, Mahajan R, Fidelle Nyikayo L, Ajack YBP, Tut Chol B, Osman E, Sangma M, Tobi A, Gallo J, Biague E, Gonçalves R, Rocaspana M, Medina C, Camará M, Flevaud L, Ruby LC, Bélard S, Sagrado MJ, Molina I, Llosa AE. Xpert-Ultra Assay in Stool and Urine Samples to Improve Tuberculosis Diagnosis in Children: The Médecins Sans Frontières Experience in Guinea-Bissau and South Sudan. Open Forum Infect Dis 2024; 11:ofae221. [PMID: 38798893 PMCID: PMC11119760 DOI: 10.1093/ofid/ofae221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Accepted: 05/01/2024] [Indexed: 05/29/2024] Open
Abstract
Background More than half of childhood tuberculosis cases remain undiagnosed yearly. The World Health Organization recommends the Xpert-Ultra assay as a first pediatric diagnosis test, but microbiological confirmation remains low. We aimed to determine the diagnostic performance of Xpert-Ultra with stool and urine samples in presumptive pediatric tuberculosis cases in 2 high-tuberculosis-burden settings. Methods This Médecins Sans Frontières cross-sectional multicentric study took place at Simão Mendes Hospital, Guinea-Bissau (July 2019 to April 2020) and in Malakal Hospital, South Sudan (April 2021 to June 2023). Children aged 6 months to 15 years with presumptive tuberculosis underwent clinical and laboratory assessment, with 1 respiratory and/or extrapulmonary sample (reference standard [RS]), 1 stool, and 1 urine specimen analyzed with Xpert-Ultra. Results A total of 563 children were enrolled in the study, 133 from Bissau and 400 from Malakal; 30 were excluded. Confirmation of tuberculosis was achieved in 75 (14.1%), while 248 (46.5%) had unconfirmed tuberculosis. Of 553 with an RS specimen, the overall diagnostic yield was 12.4% (66 of 533). A total of 493 stool and 524 urine samples were used to evaluate the performance of Xpert-Ultra with these samples. Compared with the RS, the sensitivity and specificity of Xpert-Ultra were 62.5% (95% confidence interval, 49.4%-74%) and 98.3% (96.7%-99.2%), respectively, with stool samples, and 13.9% (7.5%-24.3%) and 99.4% (98.1%-99.8%) with urine samples. Nine patients were positive with stool and/or urine samples but negative with the RS. Conclusions Xpert-Ultra in stool samples showed moderate to high sensitivity and high specificity compared with the RS and an added diagnostic yield when RS results were negative. Xpert-Ultra in stool samples was useful in extrapulmonary cases. Xpert-Ultra in urine samples showed low test performance. Clinical Trials Registration NCT06239337.
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Affiliation(s)
- Laura Moretó-Planas
- Medecins Sans Frontières, Medical Department, Barcelona, Spain
- Autonomous University of Barcelona, Faculty of Medicine, Barcelona, Spain
| | | | | | | | - Buai Tut Chol
- Medecins Sans Frontières, Juba, Republic of South Sudan
| | | | | | - Apal Tobi
- National Tuberculosis Program, Ministry of Health, Juba, Republic of South Sudan
| | | | | | | | - Mercè Rocaspana
- Medecins Sans Frontières, Medical Department, Barcelona, Spain
| | | | - Miguel Camará
- National Tuberculosis Program, Ministry of Health, Bissau, Guinea-Bissau
| | | | - Lisa C Ruby
- Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany
- German Centre for Infection Research (DZIF), Tübingen, Germany
| | - Sabine Bélard
- Institute of Tropical Medicine, University of Tübingen, Tübingen, Germany
- German Centre for Infection Research (DZIF), Tübingen, Germany
| | | | - Israel Molina
- Infectious Disease Department, Vall d’Hebron Hospital, Barcelona, Spain
| | - Augusto E Llosa
- Medecins Sans Frontières, Medical Department, Barcelona, Spain
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Burusie A, Enquesilassie F, Salazar-Austin N, Addissie A. The magnitude of unfavorable tuberculosis treatment outcomes and their relation with baseline undernutrition and sustained undernutrition among children receiving tuberculosis treatment in central Ethiopia. Heliyon 2024; 10:e28040. [PMID: 38524586 PMCID: PMC10957419 DOI: 10.1016/j.heliyon.2024.e28040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 02/06/2024] [Accepted: 03/11/2024] [Indexed: 03/26/2024] Open
Abstract
Background One of the global key indicators for monitoring the implementation of the World Health Organization's End Tuberculosis (TB) Strategy is the treatment outcome rate. Objective This study aims to assess the magnitude of unfavorable treatment outcomes and estimate their relationship with baseline undernutrition and sustained undernutrition among children receiving TB treatment in central Ethiopia. Methods This retrospective cohort study included children treated for drug-susceptible TB between June 2014 and February 2022. The study comprised children aged 16 and younger who were treated in 32 randomly selected healthcare facilities. A log-binomial model was used to compute adjusted risk ratios (aRR) with 95% confidence intervals (CIs). Results Of 640 children, 42 (6.6%; 95% CI = 4.8-8.8%) had an unfavorable TB treatment outcomes, with 31 (73.8%; 95% CI = 58.0-86.1%) occurring during the continuation phase of TB treatment. We confirmed that baseline undernutrition (aRR = 2.68; 95% CI = 1.53-4.71), age less than 10 years (aRR = 2.69; 95% CI = 1.56-4.61), HIV infection (aRR = 2.62; 95% CI = 1.50-4.59), and relapsed TB (aRR = 3.19; 95% CI = 1.79-4.71) were independent predictors of unfavorable TB treatment outcomes. When we looked separately at children who had been on TB treatment for two months or more, we found that sustained undernutrition (aRR = 3.76; 95% CI = 1.90-7.43), age below ten years (aRR = 2.60; 95% CI = 1.31-5.15), and HIV infection (aRR = 2.26; 95% CI = 1.11-4.59) remained predictors of unfavorable outcomes, just as they had in the first two months. However, the effect of relapsed TB became insignificant (aRR = 2.81; 95% CI = 0.96-8.22) after the first two months TB treatment. Conclusions The magnitude of unfavorable TB treatment outcomes among children in central Ethiopia met the World Health Organization's 2025 milestone. Nearly three-quarters of unfavorable TB treatment outcomes occurred during the continuation phase of TB treatment. Baseline undernutrition, sustained undernutrition, younger age, HIV infection, and relapsed TB were found to be independent predictors of unfavorable TB treatment outcomes among children receiving TB treatment in central Ethiopia.
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Affiliation(s)
- Abay Burusie
- Department of Public Health, College of Health Sciences, Arsi University, Asella, Ethiopia
| | - Fikre Enquesilassie
- School of Public Health, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Nicole Salazar-Austin
- Division of Pediatric Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Adamu Addissie
- School of Public Health, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
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Franke MA, Emmrich JV, Ranjaharinony F, Ravololohanitra OG, Andriamasy HE, Knauss S, Muller N. A cross-sectional analysis of the effectiveness of a nutritional support programme for people with tuberculosis in Southern Madagascar using secondary data from a non-governmental organisation. Infect Dis Poverty 2024; 13:13. [PMID: 38303047 PMCID: PMC10835822 DOI: 10.1186/s40249-024-01182-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Accepted: 01/25/2024] [Indexed: 02/03/2024] Open
Abstract
BACKGROUND There is a strong, bi-directional link between tuberculosis (TB) and undernutrition: TB often causes undernutrition, and undernourished people are more likely to contract TB and experience worse outcomes. Globally, several TB nutritional support programmes exist; however, evidence on their effectiveness is limited and contested. This study evaluates the effect of a nutritional support programme implemented for people with TB in the Atsimo-Andrefana region, Madagascar in 2022. Within this programme, undernourished people with TB [with a body mass index (BMI) of < 18.5 kg/m2] receive 0.6 L of vegetable oil and 6.0 kg of a soy-wheat blend per month throughout their TB treatment. METHODS We analysed secondary non-governmental organisation data collected between January and November 2022 in the Atsimo-Andrefana region, Southern Madagascar, including information on an individual's medical conditions (e.g., type of TB, treatment outcomes) and nutritional status measured prior to, during, and after completion of treatment (e.g., height, weight, mid-upper arm circumference). We conducted descriptive analyses of patient baseline characteristics and outcomes to assess the impact of the provided nutritional support on the BMI of people with TB. RESULTS A total of 1310 people with TB were included in the study [9.9% (130) children under the age of 5, 32.1% (420) children between 5 and 18 years, 58.0% (760) adults]. 55.4% of children under 5, 28.1% of children between ages 5 and 18, and 81.3% of adults were undernourished at treatment initiation. 42.3% (55/130) of children under 5 experienced severe acute malnutrition at treatment uptake. While the average BMI of adults with TB receiving food support increased over time, from 17.1 kg/m2 (interquartile range: 15.8-18.3, range: 10.3-22.5) to 17.9 kg/m2 (interquartile range: 16.6-19.1, range: 11.9-24.1), most adults remained undernourished even after completing TB treatment. CONCLUSIONS The current TB nutritional support programme falls short of sufficiently increasing the BMI of people with TB to overcome malnutrition. There is an urgent need to revise the nutritional support available for people with TB, particularly for children under 5.
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Affiliation(s)
- Mara Anna Franke
- Global Digital Health Lab at Charité Center for Global Health, Charité - Universitätsmedizin Berlin, Berlin, Germany.
- London School of Hygiene and Tropical Medicine, London, UK.
- Ärzte Für Madagaskar E.V., Leipzig, Germany.
| | - Julius Valentin Emmrich
- Global Digital Health Lab at Charité Center for Global Health, Charité - Universitätsmedizin Berlin, Berlin, Germany
- Ärzte Für Madagaskar E.V., Leipzig, Germany
- Heidelberg Institute of Global Health, Heidelberg University, Heidelberg, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, Germany
| | | | | | - Harizaka Emmanuel Andriamasy
- Global Digital Health Lab at Charité Center for Global Health, Charité - Universitätsmedizin Berlin, Berlin, Germany
- Doctors for Madagascar, Antananarivo, Madagascar
| | - Samuel Knauss
- Global Digital Health Lab at Charité Center for Global Health, Charité - Universitätsmedizin Berlin, Berlin, Germany
- Ärzte Für Madagaskar E.V., Leipzig, Germany
- Heidelberg Institute of Global Health, Heidelberg University, Heidelberg, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Nadine Muller
- Global Digital Health Lab at Charité Center for Global Health, Charité - Universitätsmedizin Berlin, Berlin, Germany
- Ärzte Für Madagaskar E.V., Leipzig, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, Germany
- Speciality Network: Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany
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Dipasquale V, Cucinotta U, Alibrandi A, Laganà F, Ramistella V, Romano C. Early Tube Feeding Improves Nutritional Outcomes in Children with Neurological Disabilities: A Retrospective Cohort Study. Nutrients 2023; 15:2875. [PMID: 37447202 DOI: 10.3390/nu15132875] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 06/13/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023] Open
Abstract
Tube feeding is a life-saving treatment for children with neurological disabilities (ND), who often suffer from malnutrition and feeding disorders. Nonetheless, it is still not widely used. Our aim was to evaluate the outcomes of exclusive tube feeding in a cohort of ND children. All consecutive ND children who started tube feeding at our center within the last 5 years were included in this retrospective study. Weight-for-age, body mass index (BMI), mid-upper arm circumference (MUAC) Z-scores, and symptoms were collected at baseline (V0), 6 (V1), and 12 months (V2) after gastrostomy placement. Fifty children (62% males) were included. The ND-underlying disease was genetic (n = 29, 58%), hypoxic-ischemic encephalopathy (n = 17, 34%), or metabolic (n = 4, 8%). Indications for tube feeding were malnutrition (n = 35, 70%), recurrent respiratory infections (n = 11, 22%), or both (n = 4, 8%). Enteral formulae were polymeric (n = 29, 58%), semi-elemental (n = 17, 34%), hypercaloric (n = 3, 6%), or elemental (n = 1, 2%). Homemade blended feed was offered to three children (6%) in addition to the formula. Weight and BMI increased over the study period. Except for constipation, all symptoms (cough, vomiting, and diarrhea) improved at 6 and 12 months (p < 0.05). Non-serious complications (n = 8; track disruption, granuloma, and skin infection) were observed. Longer disease duration (p < 0.001) at the start of tube feeding was associated with the absence of normalization of nutritional status (BMI Z-score > 2 SD) at 12 months. Tube feeding with commercially available enteral formulae should be started as early as possible for better outcomes.
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Affiliation(s)
- Valeria Dipasquale
- Pediatric Gastroenterology and Cystic Fibrosis Unit, Department of Human Pathology in Adulthood and Childhood "G. Barresi", "G. Martino" University Hospital, 98124 Messina, Italy
| | - Ugo Cucinotta
- Pediatric Gastroenterology and Cystic Fibrosis Unit, Department of Human Pathology in Adulthood and Childhood "G. Barresi", "G. Martino" University Hospital, 98124 Messina, Italy
| | - Angela Alibrandi
- Statistical and Mathematical Sciences Unit, Department of Economics, University of Messina, 98122 Messina, Italy
| | - Francesca Laganà
- Pediatric Gastroenterology and Cystic Fibrosis Unit, Department of Human Pathology in Adulthood and Childhood "G. Barresi", "G. Martino" University Hospital, 98124 Messina, Italy
| | - Vincenzo Ramistella
- Pediatric Gastroenterology and Cystic Fibrosis Unit, Department of Human Pathology in Adulthood and Childhood "G. Barresi", "G. Martino" University Hospital, 98124 Messina, Italy
| | - Claudio Romano
- Pediatric Gastroenterology and Cystic Fibrosis Unit, Department of Human Pathology in Adulthood and Childhood "G. Barresi", "G. Martino" University Hospital, 98124 Messina, Italy
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Moretó-Planas L, Sagrado MJ, Mahajan R, Gallo J, Biague E, Gonçalves R, Nuozzi P, Rocaspana M, Fonseca JV, Medina C, Camará M, Nadimpalli A, Alonso B, Llosa AE, Heuvelings L, Burza S, Molina I, Ruby LC, Stratta E, Bélard S. Point-of-care ultrasound for tuberculosis diagnosis in children: a Médecins Sans Frontières cross-sectional study in Guinea-Bissau. BMJ Open 2023; 13:e066937. [PMID: 37208138 DOI: 10.1136/bmjopen-2022-066937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/21/2023] Open
Abstract
OBJECTIVE Description of tuberculosis (TB)-focused point-of-care ultrasound (POCUS) findings for children with presumptive TB. DESIGN Cross-sectional study (July 2019 to April 2020). SETTING Simão Mendes hospital in Bissau, a setting with high TB, HIV, and malnutrition burdens. PARTICIPANTS Patients aged between 6 months and 15 years with presumptive TB. INTERVENTIONS Participants underwent clinical, laboratory and unblinded clinician-performed POCUS assessments, to assess subpleural nodules (SUNs), lung consolidation, pleural and pericardial effusion, abdominal lymphadenopathy, focal splenic and hepatic lesions and ascites. Presence of any sign prompted a POCUS positive result. Ultrasound images and clips were evaluated by expert reviewers and, in case of discordance, by a second reviewer. Children were categorised as confirmed TB (microbiological diagnosis), unconfirmed TB (clinical diagnosis) or unlikely TB. Ultrasound findings were analysed per TB category and risk factor: HIV co-infection, malnutrition and age. RESULTS A total of 139 children were enrolled, with 62 (45%) women and 55 (40%) aged <5 years; 83 (60%) and 59 (42%) were severely malnourished (SAM) and HIV-infected, respectively. TB confirmation occurred in 27 (19%); 62 (45%) had unconfirmed TB and 50 (36%) had unlikely TB. Children with TB were more likely to have POCUS-positive results (93%) compared with children with unlikely TB (34%). Common POCUS signs in patients with TB were: lung consolidation (57%), SUNs (55%) and pleural effusion (30%), and focal splenic lesions (28%). In children with confirmed TB, POCUS sensitivity was 85% (95% CI) (67.5% to 94.1%). In those with unlikely TB, specificity was 66% (95% CI 52.2% to 77.6%). Unlike HIV infection and age, SAM was associated with a higher POCUS-positivity. Cohen's kappa coefficient for concordance between field and expert reviewers ranged from 0.6 to 0.9. CONCLUSIONS We found a high prevalence of POCUS signs in children with TB compared with children with unlikely TB. POCUS-positivity was dependent on nutritional status but not on HIV status or age. TB-focused POCUS could potentially play a supportive role in the diagnosis of TB in children. TRIAL REGISTRATION NUMBER NCT05364593.
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Affiliation(s)
- Laura Moretó-Planas
- Medical Department, Médecins Sans Frontières, Barcelona, Spain
- Autonomous University of Barcelona, Barcelona, Spain
| | | | | | | | | | | | | | - Merce Rocaspana
- Medical Department, Médecins Sans Frontières, Barcelona, Spain
| | | | - Candida Medina
- Simão Mendes Hospital, Bissau, Guinea-Bissau
- National HIV Programme, Ministry of Health, Bissau, Guinea-Bissau
| | - Miguel Camará
- National Tuberculosis Program, Bissau, Guinea-Bissau
| | | | - Beatriz Alonso
- Medical Department, Médecins Sans Frontières, Barcelona, Spain
| | - Augusto E Llosa
- Medical Department, Médecins Sans Frontières, Barcelona, Spain
| | | | | | - Israel Molina
- Department of Infectious Diseases, Vall d'Hebron Hospital Universitari, Barcelona, Spain
| | - Lisa C Ruby
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Erin Stratta
- Medecins Sans Frontières, New York City, New York, USA
| | - Sabine Bélard
- Institute of Tropical Medicine, University of Tübingen, Tubingen, Germany
- German Center for Infection Research, Tübingen, Germany
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Powell L, Denoeud-Ndam L, Herrera N, Masaba R, Tchounga B, Siamba S, Ouma M, Petnga SJ, Machekano R, Pamen B, Okomo G, Simo L, Casenghi M, Rakhmanina N, Tiam A. HIV matters when diagnosing TB in young children: an ancillary analysis in children enrolled in the INPUT stepped wedge cluster randomized study. BMC Infect Dis 2023; 23:234. [PMID: 37069518 PMCID: PMC10107571 DOI: 10.1186/s12879-023-08216-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 04/03/2023] [Indexed: 04/19/2023] Open
Abstract
BACKGROUND Children under age five years, particularly those living with HIV (CLHIV), are at risk for rapid progression of tuberculosis (TB). We aimed to describe TB clinical presentations, diagnostic pathways and treatment outcomes in CLHIV compared to children without HIV in Cameroon and Kenya. METHODS This sub-analysis of a cluster-randomized trial evaluating the integration of pediatric TB services from May 2019 to March 2021 enrolled children age < 5 years with TB. We estimated the HIV infection rate with 95% confidence interval (CI). We compared TB clinical presentations, diagnostic pathways and treatment outcomes in CLHIV and children without HIV. Finally, we investigated whether HIV infection was associated with a shorter time to TB diagnosis (≤ 3 months from symptoms onset) after adjusting for covariates. Univariable and multivariable logistic regression analysis were performed with adjusted odds ratios (AORs) presented as measures of the association of covariates with HIV status and with shorter time to TB diagnosis. RESULTS We enrolled 157 children with TB (mean age was 1.5 years) and 22/157 (14.0% [9.0-20.4%]) were co-infected with HIV. CLHIV were more likely to initially present with acute malnutrition (AOR 3.16 [1.14-8.71], p = 0.027). Most TB diagnoses (140/157, 89%) were made clinically with pulmonary TB being the most common presentation; however, there was weak evidence of more frequent bacteriologic confirmation of TB in CLHIV, 18% vs. 9% (p = 0.067), due to the contribution of lateral-flow urine lipoarabinomannan to the diagnosis. HIV positivity (AOR: 6.10 [1.32-28.17], p = 0.021) was independently associated with a shorter time to TB diagnosis as well as fatigue (AOR: 6.58 [2.28-18.96], p = 0.0005), and existence of a household contact diagnosed with TB (AOR: 5.60 [1.58-19.83], p = 0.0075), whereas older age (AOR: 0.35 [0.15-0.85], p = 0.020 for age 2-5 years), night sweats (AOR: 0.24 [0.10-0.60], p = 0.0022) and acute malnutrition (AOR: 0.36 [0.14-0.92], p = 0.034) were associated with a delayed diagnosis. The case fatality rate was 9% (2/22) in CLHIV and 4% (6/135) in children without HIV, p = 0.31. CONCLUSIONS These results altogether advocate for better integration of TB services into all pediatric entry points with a special focus on nutrition services, and illustrate the importance of non-sputum-based TB diagnostics especially in CLHIV. TRIAL REGISTRATION NCT03862261, first registration 05/03/2019.
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Affiliation(s)
- L Powell
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Medical University of South Carolina, Charleston, SC, USA
| | - L Denoeud-Ndam
- Elizabeth Glaser Pediatric AIDS Foundation, Geneva, Switzerland.
| | - N Herrera
- Elizabeth Glaser Pediatric AIDS Foundation, Washington, DC, USA
| | - R Masaba
- Elizabeth Glaser Pediatric AIDS Foundation, Nairobi, Kenya
| | - B Tchounga
- Elizabeth Glaser Pediatric AIDS Foundation, Yaounde, Cameroon
| | - S Siamba
- Elizabeth Glaser Pediatric AIDS Foundation, Nairobi, Kenya
| | - M Ouma
- Elizabeth Glaser Pediatric AIDS Foundation, Nairobi, Kenya
| | - S J Petnga
- Elizabeth Glaser Pediatric AIDS Foundation, Yaounde, Cameroon
| | - R Machekano
- Elizabeth Glaser Pediatric AIDS Foundation, Washington, DC, USA
| | - B Pamen
- Department of Disease, Epidemic and pandemic control, Ministry of Health, Yaounde, Cameroon
| | - G Okomo
- Department of Health, Homa Bay county Government, Homa Bay, Kenya
| | - L Simo
- Elizabeth Glaser Pediatric AIDS Foundation, Yaounde, Cameroon
| | - M Casenghi
- Elizabeth Glaser Pediatric AIDS Foundation, Geneva, Switzerland
| | - N Rakhmanina
- Elizabeth Glaser Pediatric AIDS Foundation, Washington, DC, USA
| | - A Tiam
- Elizabeth Glaser Pediatric AIDS Foundation, Washington, DC, USA
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Holowka T, van Duin D, Bartelt LA. Impact of childhood malnutrition and intestinal microbiota on MDR infections. JAC Antimicrob Resist 2023; 5:dlad051. [PMID: 37102119 PMCID: PMC10125725 DOI: 10.1093/jacamr/dlad051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2023] Open
Abstract
The global burden of infection from MDR organisms (MDROs) disproportionately affects children residing in low- and middle-income countries and those with increased healthcare exposure. These populations have high rates of malnutrition making them increasingly vulnerable to infection with intestinal-derived pathogens. Malnourished children experience increased incidence of intestinal carriage and invasive infection with intestinal-derived MDROs including ESBL- and carbapenemase-producing Enterobacterales. However, the relationship between malnutrition and MDRO infection remains to be clearly defined. Impairment in intestinal barrier function and innate and adaptive immunity in malnutrition increases the risk for infection with intestinal-derived pathogens, and there is an increasing appreciation of the role of the intestinal microbiota in this process. Current evidence from human studies and animal models suggests that diet and the intestinal microbiota influence each other to determine nutritional status, with important implications for infectious outcomes. These insights are crucial to developing microbiota-targeted strategies aimed at reversing the growing burden of MDRO infections in malnourished populations worldwide.
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Affiliation(s)
- Thomas Holowka
- Division of Infectious Diseases, Department of Medicine, University of North Carolina School of Medicine, 130 Mason Farm Rd, CB #7030, Chapel Hill, NC 27599, USA
| | - David van Duin
- Division of Infectious Diseases, Department of Medicine, University of North Carolina School of Medicine, 130 Mason Farm Rd, CB #7030, Chapel Hill, NC 27599, USA
| | - Luther A Bartelt
- Division of Infectious Diseases, Department of Medicine, University of North Carolina School of Medicine, 130 Mason Farm Rd, CB #7030, Chapel Hill, NC 27599, USA
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11
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Wu S, Litvinjenko S, Magwood O, Wei X. Defining tuberculosis vulnerability based on an adapted social determinants of health framework: a narrative review. Glob Public Health 2023; 18:2221729. [PMID: 37302100 DOI: 10.1080/17441692.2023.2221729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 05/31/2023] [Indexed: 06/13/2023]
Abstract
The World Health Organization's new End TB Strategy emphasises socioeconomic interventions to reduce access barriers to TB care and address the social determinants of TB. To facilitate developing interventions that align with this strategy, we examined how TB vulnerability and vulnerable populations were defined in literature, with the aim to propose a definition and operational criteria for TB vulnerable populations through social determinants of health and equity perspectives. We searched for documents providing explicit definition of TB vulnerability or list of TB vulnerable populations. Guided by the Commission on the Social Determinants of Health framework, we synthesised the definitions, compiled vulnerable populations, developed a conceptual framework of TB vulnerability, and derived definition and criteria for TB vulnerable populations. We defined TB vulnerable populations as those whose context leads to disadvantaged socioeconomic positions that expose them to systematically higher risks of TB, but having limited access to TB care, thus leading to TB infection or progression to TB disease. We propose that TB vulnerable populations can be determined in three dimensions: disadvantaged socioeconomic position, higher risks of TB infection or progression to disease, and poor access to TB care. Examining TB vulnerability facilitates identification and support of vulnerable populations.
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Affiliation(s)
- Shishi Wu
- Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
- Global Implementation Science Lab, University of Toronto, Toronto, Canada
| | - Stefan Litvinjenko
- Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
- Global Implementation Science Lab, University of Toronto, Toronto, Canada
| | - Olivia Magwood
- Bruyère Research Institute, Ottawa, Canada
- Interdisciplinary School of Health Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, Canada
| | - Xiaolin Wei
- Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
- Global Implementation Science Lab, University of Toronto, Toronto, Canada
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12
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Pépin J, Fox A, LeBlanc L, De Wals P, Rousseau MC. In the footsteps of Albert Calmette: an ecological study of TB, leprosy and potential exposure to wild-type Mycobacterium bovis. Trans R Soc Trop Med Hyg 2022; 116:1112-1122. [PMID: 35460554 DOI: 10.1093/trstmh/trac032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 03/16/2022] [Accepted: 03/18/2022] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND One hundred years ago, Albert Calmette developed an avirulent strain of Mycobacterium bovis, but there is no evidence that his BCG strain was more immunogenic than wild-type M. bovis. Geographic variations in BCG efficacy remain ill-understood. We hypothesized that exposure to M. bovis through unpasteurized milk might protect against Mycobacterium tuberculosis and Mycobacterium leprae. METHODS After excluding high-income countries (with universal milk pasteurization) and microstates, an ecological study comprising 113 countries was conducted. National data were obtained from United Nations agencies and international organizations about milk production per capita (1980-1999) as a proxy for exposure to wild-type M. bovis, TB (2000-2019) and leprosy (2005-2019) incidence, HIV prevalence (2000-2019), human development index (2010), global hunger index (2010), neonatal BCG coverage (1980-1999), urbanization (2000) and temperature (1990-2020). Multiple linear regression analyses were performed using log-transformed variables. RESULTS For TB, the association differed by region. An inverse association with milk production was seen in regions outside, but not within, sub-Saharan Africa, after adjustment for confounders. The incidence of leprosy was inversely associated with milk production when combining all countries, but the association was stronger in sub-Saharan Africa. CONCLUSIONS Exposure to wild-type M. bovis through unpasteurized milk may provide cross-protection against M. tuberculosis and M. leprae and contribute to geographic disparities in BCG efficacy. This needs to be confirmed by individual-level studies.
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Affiliation(s)
- Jacques Pépin
- Department of microbiology and infectious diseases, Université de Sherbrooke, 3001 12ième Avenue Nord, Sherbrooke, Québec, J1H 5N4, Canada
| | - Aicha Fox
- Department of microbiology and infectious diseases, Université de Sherbrooke, 3001 12ième Avenue Nord, Sherbrooke, Québec, J1H 5N4, Canada
| | - Louiselle LeBlanc
- Department of microbiology and infectious diseases, Université de Sherbrooke, 3001 12ième Avenue Nord, Sherbrooke, Québec, J1H 5N4, Canada
| | - Philippe De Wals
- Department of social and preventive medicine, Université Laval, 2725 chemin Ste-Foy, Québec, Québec, G1V 4G5, Canada
| | - Marie-Claude Rousseau
- Centre Armand-Frappier Santé Biotechnologie, Institut National de la Recherche Scientifique, 531 boulevard des Prairies, Laval, Québec, H7V 1B7 Canada
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13
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Shodikin MA, Agustina D. Spontaneous pneumothorax in a child with miliary tuberculosis: a case report. PAEDIATRICA INDONESIANA 2022. [DOI: 10.14238/pi62.5.2022.364-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Spontaneous pneumothorax is a rare but fatal complication of miliary tuberculosis. We report a 13-year-old boy presenting with shortness of breath. He was diagnosed with miliary tuberculosis with spontaneous pneumothorax, which showed significant improvement after the insertion of a thoracostomy tube and anti-tuberculosis drug therapy.
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14
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Chalid MT, Puspawaty D, Tahir AM, Najdah H, Massi MN. Tuberculin test versus interferon gamma release assay in pregnant women with household contacts of tuberculosis patients. Int J Mycobacteriol 2022; 11:364-370. [PMID: 36510919 DOI: 10.4103/ijmy.ijmy_112_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Background Pregnant women who live in tuberculosis (TB)-affected households are more likely to develop latent TB infection (LTBI), which often escapes treatment. This study aims to determine if Interferon-gamma release (IGRA) is reliable in screening for LTBI in pregnant women, compare to the tuberculin skin test (TST). Methods It was a cross-sectional study that involved 60 pregnant women with TB contact history as a proxy for LTBI and 30 pregnant women without contact history. Latent TB was detected using the TST 5 tuberculin units and IGRA using the QuantiFERON Gold Plus TB Test kit (QFT-Plus). The sensitivity and specificity of the two diagnostic methods and the agreement between them were estimated using SPSS version 20.0. Results The sensitivity 95% (95% confidence interval [CI]: 86.08%-98.96%) and specificity 26.7% (95% CI: 12.28%-45.89%) of TST were compared to that of the IGRA with 60% (95% CI: 46.54%-72.44%) and 73.3% (95% CI: 54.11%-87.72%) sensitivity and specificity, respectively in detecting LTBI in pregnancy. Although there was a significant difference (P < 0.05) between TST and IGRA, the agreement was fair (kappa 0.39; 95% CI: 0.24-0.45). Conclusion TST assay is more sensitive than IGRA; however, the specificity of IGRA was superior to the TST method. In this study, a fair agreement of TST and IGRA was observed for detecting latent TB infection in pregnant women with household contact with TB patients.
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Affiliation(s)
- Maisuri Tadjuddin Chalid
- Department of Obstetrics and Gynecology, Faculty of Medicine, Hasanuddin University Hospital, Universitas Hasanuddin, Makassar, South Sulawesi, Indonesia
| | - Dian Puspawaty
- Department of Obstetrics and Gynecology, Faculty of Medicine, Hasanuddin University Hospital, Universitas Hasanuddin, Makassar, South Sulawesi, Indonesia
| | - Andi Mardiah Tahir
- Department of Obstetrics and Gynecology, Faculty of Medicine, Hasanuddin University Hospital, Universitas Hasanuddin, Makassar, South Sulawesi, Indonesia
| | - Hidayah Najdah
- Postgraduate Program, Faculty of Medicine, Universitas Hasanuddin, Makassar, South Sulawesi, Indonesia
| | - Muhammad Nasrum Massi
- Department of Clinical Microbiology, Faculty of Medicine, Hasanuddin University Hospital, Universitas Hasanuddin, Makassar, South Sulawesi, Indonesia
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15
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Wagnew F, Alene KA, Eshetie S, Wingfield T, Kelly M, Gray D. Effects of zinc and vitamin A supplementation on prognostic markers and treatment outcomes of adults with pulmonary tuberculosis: a systematic review and meta-analysis. BMJ Glob Health 2022; 7:bmjgh-2022-008625. [PMID: 36130775 PMCID: PMC9490634 DOI: 10.1136/bmjgh-2022-008625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 08/07/2022] [Indexed: 11/20/2022] Open
Abstract
INTRODUCTION Undernutrition is a major risk factor for tuberculosis (TB), which is estimated to be responsible for 1.9 million TB cases per year globally. The effectiveness of micronutrient supplementation on TB treatment outcomes and its prognostic markers (sputum conversion, serum zinc, retinol and haemoglobin levels) has been poorly understood. This study aimed to determine the effect of zinc and vitamin A supplementation on prognostic markers and TB treatment outcomes among adults with sputum-positive pulmonary TB. METHODS A systematic literature search for randomised controlled trials (RCTs) was performed in PubMed, Embase and Scopus databases. Meta-analysis with a random effect model was performed to estimate risk ratio (RR) and mean difference (MD), with a 95% CI, for dichotomous and continuous outcomes, respectively. RESULTS Our search identified 2195 records. Of these, nine RCTs consisting of 1375 participants were included in the final analyses. Among adults with pulmonary TB, zinc (RR: 0.94, 95% CI: 0.86 to 1.03), vitamin A (RR: 0.90, 95% CI: 0.80 to 1.01) and combined zinc and vitamin A (RR: 0.98, 95% CI: 0.89 to 1.08) supplementation were not significantly associated with TB treatment success. Combined zinc and vitamin A supplementation was significantly associated with increased sputum smear conversion at 2 months (RR: 1.16, 95% CI: 1.03 to 1.32), serum zinc levels at 2 months (MD: 0.86 μmol/L, 95% CI: 0.14 to 1.57), serum retinol levels at 2 months (MD: 0.06 μmol/L, 95% CI: 0.04 to 0.08) and 6 months (MD: 0.12 μmol/L, 95% CI: 0.10 to 0.14) and serum haemoglobin level at 6 months (MD: 0.29 μg/dL, 95% CI: 0.08 to 0.51), among adults with pulmonary TB. CONCLUSIONS Providing zinc and vitamin A supplementation to adults with sputum-positive pulmonary TB during treatment may increase early sputum smear conversion, serum zinc, retinol and haemoglobin levels. However, the use of zinc, vitamin A or both was not associated with TB treatment success. PROSPERO REGISTRATION NUMBER CRD42021248548.
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Affiliation(s)
- Fasil Wagnew
- College of Health Science, Debre Markos University, Debre Markos, Ethiopia
- National Centre for Epidemiology and Population Health, College of Health and Medicine, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Kefyalew Addis Alene
- Faculty of Health Sciences, Curtin University, Perth, Western Australia, Australia
- Geospatial Health and Development, Telethon Kids Institute, Nedlands, Western Australia, Australia
| | - Setegn Eshetie
- College of Health Science, University of Gondar, Gondar, Ethiopia
- Allied health performance Academic Unit, University of South Australia, Adelaide, South Australia, Australia
| | - Tom Wingfield
- Clinical Sciences and International Public Health, Liverpool School of Tropical Medicine, Liverpool, UK
- WHO Collaborating Centre for Social Medicine and Tuberculosis, Department of Global Public Health, Karolinska Institute, Stockholm, Sweden
| | - Matthew Kelly
- National Centre for Epidemiology and Population Health, College of Health and Medicine, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Darren Gray
- National Centre for Epidemiology and Population Health, College of Health and Medicine, Australian National University, Canberra, Australian Capital Territory, Australia
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16
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Kazi S, Corcoran H, Abo YN, Graham H, Oliwa J, Graham SM. A systematic review of clinical, epidemiological and demographic predictors of tuberculosis in children with pneumonia. J Glob Health 2022; 12:10010. [PMID: 35939347 PMCID: PMC9527007 DOI: 10.7189/jogh.12.10010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Background Tuberculosis (TB) can present as acute, severe pneumonia in children, but features which distinguish TB from other causes of pneumonia are not well understood. We conducted a systematic review to determine the prevalence and to explore clinical and demographic predictors of TB in children presenting with pneumonia over three decades. Methods We searched for peer-reviewed, English language studies published between 1990 and 2020 that included children aged between 1 month and 17 years with pneumonia and prospectively evaluated for TB. There were 895 abstracts and titles screened, and 72 full text articles assessed for eligibility. Results Thirteen clinical studies, two autopsy studies and one systematic review were included in analyses. Majority of studies were from Africa (12/15) and included children less than five years age. Prevalence of bacteriologically confirmed TB in children with pneumonia ranged from 0.2% to 14.8% (median = 3.7%, interquartile range (IQR) = 5.95) and remained stable over the three decades. TB may be more likely in children with pneumonia if they have a history of close TB contact, HIV infection, malnutrition, age less than one year or failure to respond to empirical antibiotics. However, these features have limited discriminatory value as TB commonly presents as acute severe pneumonia – with a short duration of cough, and clinical and radiographic features indistinguishable from other causes of pneumonia. Approximately half of patients with TB respond to initial empirical antibiotics, presumably due to bacterial co-infection, and follow-up may be critical to detect and treat TB. Conclusion TB should be considered as a potential cause or comorbidity in all children presenting with pneumonia in high burden settings. Clinicians should be alert to the presence of known risk factors for TB and bacteriological confirmation sought whenever possible. Quality data regarding clinical predictors of TB in childhood pneumonia are lacking. Further, prospective research is needed to better understand predictors and prevalence of TB in childhood pneumonia, particularly in TB endemic settings outside of Africa and in older children. Children of all ages with pneumonia should be included in research on improved, point-of-care TB diagnostics to support early case detection and treatment.
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Affiliation(s)
- Saniya Kazi
- Murdoch Children's Research Institute, Melbourne, Victoria, Australia.,Royal Children's Hospital Melbourne, Melbourne, Victoria, Australia.,Monash Health, Melbourne, Victoria, Australia
| | - Hannah Corcoran
- Royal Children's Hospital Melbourne, Melbourne, Victoria, Australia
| | - Yara-Natalie Abo
- Royal Children's Hospital Melbourne, Melbourne, Victoria, Australia
| | - Hamish Graham
- Murdoch Children's Research Institute, Melbourne, Victoria, Australia.,Royal Children's Hospital Melbourne, Melbourne, Victoria, Australia.,University of Melbourne Department of Paediatrics, Melbourne, Victoria, Australia
| | - Jacquie Oliwa
- KEMRI-Wellcome Trust Research Programme, Nairobi, Kenya.,University of Nairobi, Nairobi, Kenya
| | - Stephen M Graham
- Murdoch Children's Research Institute, Melbourne, Victoria, Australia.,Royal Children's Hospital Melbourne, Melbourne, Victoria, Australia.,Monash Health, Melbourne, Victoria, Australia.,University of Melbourne Department of Paediatrics, Melbourne, Victoria, Australia
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17
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Turkova A, Wills GH, Wobudeya E, Chabala C, Palmer M, Kinikar A, Hissar S, Choo L, Musoke P, Mulenga V, Mave V, Joseph B, LeBeau K, Thomason MJ, Mboizi RB, Kapasa M, van der Zalm MM, Raichur P, Bhavani PK, McIlleron H, Demers AM, Aarnoutse R, Love-Koh J, Seddon JA, Welch SB, Graham SM, Hesseling AC, Gibb DM, Crook AM. Shorter Treatment for Nonsevere Tuberculosis in African and Indian Children. N Engl J Med 2022; 386:911-922. [PMID: 35263517 PMCID: PMC7612496 DOI: 10.1056/nejmoa2104535] [Citation(s) in RCA: 82] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Two thirds of children with tuberculosis have nonsevere disease, which may be treatable with a shorter regimen than the current 6-month regimen. METHODS We conducted an open-label, treatment-shortening, noninferiority trial involving children with nonsevere, symptomatic, presumably drug-susceptible, smear-negative tuberculosis in Uganda, Zambia, South Africa, and India. Children younger than 16 years of age were randomly assigned to 4 months (16 weeks) or 6 months (24 weeks) of standard first-line antituberculosis treatment with pediatric fixed-dose combinations as recommended by the World Health Organization. The primary efficacy outcome was unfavorable status (composite of treatment failure [extension, change, or restart of treatment or tuberculosis recurrence], loss to follow-up during treatment, or death) by 72 weeks, with the exclusion of participants who did not complete 4 months of treatment (modified intention-to-treat population). A noninferiority margin of 6 percentage points was used. The primary safety outcome was an adverse event of grade 3 or higher during treatment and up to 30 days after treatment. RESULTS From July 2016 through July 2018, a total of 1204 children underwent randomization (602 in each group). The median age of the participants was 3.5 years (range, 2 months to 15 years), 52% were male, 11% had human immunodeficiency virus infection, and 14% had bacteriologically confirmed tuberculosis. Retention by 72 weeks was 95%, and adherence to the assigned treatment was 94%. A total of 16 participants (3%) in the 4-month group had a primary-outcome event, as compared with 18 (3%) in the 6-month group (adjusted difference, -0.4 percentage points; 95% confidence interval, -2.2 to 1.5). The noninferiority of 4 months of treatment was consistent across the intention-to-treat, per-protocol, and key secondary analyses, including when the analysis was restricted to the 958 participants (80%) independently adjudicated to have tuberculosis at baseline. A total of 95 participants (8%) had an adverse event of grade 3 or higher, including 15 adverse drug reactions (11 hepatic events, all but 2 of which occurred within the first 8 weeks, when the treatments were the same in the two groups). CONCLUSIONS Four months of antituberculosis treatment was noninferior to 6 months of treatment in children with drug-susceptible, nonsevere, smear-negative tuberculosis. (Funded by the U.K. Medical Research Council and others; SHINE ISRCTN number, ISRCTN63579542.).
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Affiliation(s)
- Anna Turkova
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Genevieve H Wills
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Eric Wobudeya
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Chishala Chabala
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Megan Palmer
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Aarti Kinikar
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Syed Hissar
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Louise Choo
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Philippa Musoke
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Veronica Mulenga
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Vidya Mave
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Bency Joseph
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Kristen LeBeau
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Margaret J Thomason
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Robert B Mboizi
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Monica Kapasa
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Marieke M van der Zalm
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Priyanka Raichur
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Perumal K Bhavani
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Helen McIlleron
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Anne-Marie Demers
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Rob Aarnoutse
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - James Love-Koh
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - James A Seddon
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Steven B Welch
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Stephen M Graham
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Anneke C Hesseling
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Diana M Gibb
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
| | - Angela M Crook
- From the Medical Research Council Clinical Trials Unit, University College London (A.T., G.H.W., L.C., K.L., M.J.T., D.M.G., A.M.C.), and the Department of Infectious Diseases, Imperial College London (J.A.S.), London, the Centre for Health Economics, University of York, York (J.L.-K.), and the Department of Paediatrics, Birmingham Chest Clinic and Heartlands Hospital, University Hospitals Birmingham, Birmingham (S.B.W.) - all in the United Kingdom; Makerere University-Johns Hopkins University Research Collaboration, Kampala, Uganda (E.W., P.M., R.B.M.); University Teaching Hospital, Lusaka, Zambia (C.C., V. Mulenga, M.K.); Desmond Tutu TB Centre, the Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch (M.P., M.M.Z., A.-M.D., J.A.S., A.C.H.), and the Division of Clinical Pharmacology, University of Cape Town, Cape Town (H.M.) - both in South Africa; B.J. Medical College, Pune (A.K., V. Mave, P.R.), and the National Institute for Research in Tuberculosis, Chennai (S.H., B.J., P.K.B.) - both in India; Radboud University Medical Center, Nijmegen, the Netherlands (R.A.); the Centre for International Child Health, Department of Paediatrics, University of Melbourne, and Murdoch Children's Research Institute, Royal Children's Hospital - both in Melbourne, VIC, Australia (S.M.G.); and the International Union against Tuberculosis and Lung Disease, Paris (S.M.G.)
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18
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Vaezipour N, Fritschi N, Brasier N, Bélard S, Domínguez J, Tebruegge M, Portevin D, Ritz N. Towards Accurate Point-of-Care Tests for Tuberculosis in Children. Pathogens 2022; 11:pathogens11030327. [PMID: 35335651 PMCID: PMC8949489 DOI: 10.3390/pathogens11030327] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 03/02/2022] [Accepted: 03/03/2022] [Indexed: 12/20/2022] Open
Abstract
In childhood tuberculosis (TB), with an estimated 69% of missed cases in children under 5 years of age, the case detection gap is larger than in other age groups, mainly due to its paucibacillary nature and children’s difficulties in delivering sputum specimens. Accurate and accessible point-of-care tests (POCTs) are needed to detect TB disease in children and, in turn, reduce TB-related morbidity and mortality in this vulnerable population. In recent years, several POCTs for TB have been developed. These include new tools to improve the detection of TB in respiratory and gastric samples, such as molecular detection of Mycobacterium tuberculosis using loop-mediated isothermal amplification (LAMP) and portable polymerase chain reaction (PCR)-based GeneXpert. In addition, the urine-based detection of lipoarabinomannan (LAM), as well as imaging modalities through point-of-care ultrasonography (POCUS), are currently the POCTs in use. Further to this, artificial intelligence-based interpretation of ultrasound imaging and radiography is now integrated into computer-aided detection products. In the future, portable radiography may become more widely available, and robotics-supported ultrasound imaging is currently being trialed. Finally, novel blood-based tests evaluating the immune response using “omic-“techniques are underway. This approach, including transcriptomics, metabolomic, proteomics, lipidomics and genomics, is still distant from being translated into POCT formats, but the digital development may rapidly enhance innovation in this field. Despite these significant advances, TB-POCT development and implementation remains challenged by the lack of standard ways to access non-sputum-based samples, the need to differentiate TB infection from disease and to gain acceptance for novel testing strategies specific to the conditions and settings of use.
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Affiliation(s)
- Nina Vaezipour
- Mycobacterial and Migrant Health Research Group, University Children’s Hospital Basel, Department for Clinical Research, University of Basel, 4056 Basel, Switzerland; (N.V.); (N.F.)
- Infectious Disease and Vaccinology Unit, University Children’s Hospital Basel, University of Basel, 4056 Basel, Switzerland
| | - Nora Fritschi
- Mycobacterial and Migrant Health Research Group, University Children’s Hospital Basel, Department for Clinical Research, University of Basel, 4056 Basel, Switzerland; (N.V.); (N.F.)
| | - Noé Brasier
- Department of Health Sciences and Technology, Institute for Translational Medicine, ETH Zurich, 8093 Zurich, Switzerland;
- Department of Digitalization & ICT, University Hospital Basel, 4031 Basel, Switzerland
| | - Sabine Bélard
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité–Universitätsmedizin Berlin, 13353 Berlin, Germany;
- Institute of Tropical Medicine and International Health, Charité–Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - José Domínguez
- Institute for Health Science Research Germans Trias i Pujol. CIBER Enfermedades Respiratorias, Universitat Autònoma de Barcelona, 08916 Barcelona, Spain;
| | - Marc Tebruegge
- Department of Infection, Immunity and Inflammation, UCL Great Ormond Street Institute of Child Health, University College London, London WCN1 1EH, UK;
- Department of Pediatrics, The Royal Children’s Hospital Melbourne, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Damien Portevin
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4123 Allschwil, Switzerland;
- University of Basel, 4001 Basel, Switzerland
| | - Nicole Ritz
- Mycobacterial and Migrant Health Research Group, University Children’s Hospital Basel, Department for Clinical Research, University of Basel, 4056 Basel, Switzerland; (N.V.); (N.F.)
- Department of Pediatrics, The Royal Children’s Hospital Melbourne, The University of Melbourne, Parkville, VIC 3052, Australia
- Department of Paediatrics and Paediatric Infectious Diseases, Children’s Hospital, Lucerne Cantonal Hospital, 6000 Lucerne, Switzerland
- Correspondence: ; Tel.: +41-61-704-1212
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19
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Vonasek BJ, Radtke KK, Vaz P, Buck WC, Chabala C, McCollum ED, Marcy O, Fitzgerald E, Kondwani A, Garcia-Prats AJ. Tuberculosis in children with severe acute malnutrition. Expert Rev Respir Med 2022; 16:273-284. [PMID: 35175880 PMCID: PMC9280657 DOI: 10.1080/17476348.2022.2043747] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION With growing attention globally to the childhood tuberculosis epidemic after decades of neglect, and with the burden of severe acute malnutrition (SAM) remaining unacceptably high worldwide, the collision of these two diseases is an important focus for improving child health. AREAS COVERED This review describes the clinical and public health implications of the interplay between tuberculosis and SAM, particularly for children under the age of five, and identifies priority areas for improved programmatic implementation and future research. We reviewed the literature on PubMed and other evidence known to the authors published until August 2021 relevant to this topic. EXPERT OPINION To achieve the World Health Organization's goal of eliminating deaths from childhood tuberculosis and to improve the abysmal outcomes for children with SAM, further research is needed to 1) better understand the epidemiologic connections between child tuberculosis and SAM, 2) improve case finding of tuberculosis in children with SAM, 3) assess unique treatment considerations for tuberculosis when children also have SAM, and 4) ensure tuberculosis and SAM are strongly addressed in decentralized, integrated models of providing primary healthcare to children.
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Affiliation(s)
- Bryan J Vonasek
- Department of Pediatrics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin, USA,Corresponding Author: Bryan Vonasek, , University of Wisconsin School of Medicine & Public Health, Department of Pediatrics, 600 Highland Ave, Madison, WI, USA 53792-4108, Phone: +1-763-333-8071, Fax: +1-608-265-9243
| | - Kendra K Radtke
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, California, USA
| | - Paula Vaz
- Fundação Ariel Glaser, Maputo, Mozambique
| | - W Chris Buck
- David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Chishala Chabala
- Children’s Hospital, University Teaching Hospitals, Lusaka, Zambia
| | - Eric D McCollum
- Global Program in Respiratory Sciences, Eudowood Division of Pediatric Respiratory Sciences, Department of Pediatrics, Johns Hopkins School of Medicine, Baltimore, MD, USA,Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Olivier Marcy
- University of Bordeaux, Inserm, French National Research Institute for Sustainable Development (IRD), Bordeaux, France
| | - Elizabeth Fitzgerald
- Department of Pediatrics, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | - Alexander Kondwani
- Centre of Excellence for Nutrition, North West University, Potchefstroom, South Africa
| | - Anthony J Garcia-Prats
- Department of Pediatrics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin, USA
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Abstract
Childhood tuberculosis (TB) has been underreported and underrepresented in TB statistics across the globe. Contributing factors include health system barriers, diagnostic barriers, and community barriers leading to an underdetected epidemic of childhood tuberculosis. Despite considerable progress in childhood TB management, there is a concerning gap in policy and practice in high-burden countries leading to missed opportunities for active case detection, early diagnosis and treatment of TB exposure, and infection and disease in children regardless of human immunodeficiency virus status. Bridging this gap requires multisectoral coordination and political commitment along with an eye to research and innovation with potential to scale.
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Affiliation(s)
- Sadia Shakoor
- Department of Pathology, Section of Microbiology, Aga Khan University, Supariwala Building, PO Box 3500, Karachi, Pakistan
| | - Fatima Mir
- Department of Pediatrics and Child Health, The Aga Khan University, Faculty Office Building, PO Box 3500, Stadium Road, Karachi 74800, Pakistan.
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Nguna J, Okethwangu D, Kabwama SN, Aliddeki DM, Kironde SK, Birungi D, Eurien D, Ario AR, Lukoye D, Kasozi J, Cegielski PJ. Factors associated with poor treatment outcomes among tuberculosis patients in Kyangwali Refugee Settlement, Uganda, 2016-2017. PLOS GLOBAL PUBLIC HEALTH 2022; 2:e0000152. [PMID: 36962487 PMCID: PMC10022256 DOI: 10.1371/journal.pgph.0000152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 07/06/2022] [Indexed: 11/19/2022]
Abstract
Communicable diseases, alone or in combination with malnutrition, account for most deaths in complex emergencies including refugee settings. Tuberculosis and HIV/AIDS are increasingly becoming an important cause of morbidity and mortality in refugee settings. We described the treatment outcomes of TB patients and explored factors associated with treatment outcomes among TB patients attending two facilities in Kyangwali Refugee Settlement in Kikuube District, 2016-2017. We abstracted data on laboratory-confirmed patient data from TB registers from 2016 to 2017, in Kikuube Health Centre IV and Rwenyawawa Health Centre II, both located in Kyangwali Refugee Settlement. We abstracted data on socio-demographic variables including age and sex. Other variables were height, weight, final treatment outcomes, demographics, HIV status, TB treatment category, and history of TB. Treatment outcomes were categorized into favorable (including patients who were cured or those who completed treatment) and unfavorable (those in whom treatment failed, those who died, those lost to follow-up, or those not evaluated). We used logistic regression to identify factors associated with unfavorable treatment outcomes. We identified a total of 254 TB patients with a median age of 36 (IQR 26-48) years; 69% (175) were male and 54% (137) were refugees. The median weight was 50.4 kg (range 4-198). Overall, 139 (55%) had favorable outcomes while 115 (45%) had unfavorable outcomes. Refugees formed 53% (71) of those with favorable outcomes and 47% (63) of those with unfavorable outcomes 63(47%). We found that increasing age was statistically associated with unfavorable outcomes, while diagnosis with MDR-TB was associated with decreased odds for unfavorable treatment outcomes. The treatment success rate was lower compared to 85% recommended by WHO. However, the rates are similar to that reported by other studies in Uganda. Innovative approaches to improve treatment success rates with particular focus on persons aged 41-80 years should be devised.
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Affiliation(s)
- Joyce Nguna
- Uganda Public Health Fellowship Program, Ministry of Health, Kampala, Uganda
| | - Denis Okethwangu
- Uganda Public Health Fellowship Program, Ministry of Health, Kampala, Uganda
| | | | | | | | - Doreen Birungi
- Uganda Public Health Fellowship Program, Ministry of Health, Kampala, Uganda
| | - Daniel Eurien
- Uganda Public Health Fellowship Program, Ministry of Health, Kampala, Uganda
| | - Alex Riolexus Ario
- Uganda Public Health Fellowship Program, Ministry of Health, Kampala, Uganda
- Ministry of Health, Kampala, Uganda
| | | | - Julius Kasozi
- United Nations High Commission for Refugees, Kampala, Uganda
| | - Peter J Cegielski
- Division of Global HIV and TB, Global TB Branch, US Centers for Diseases Control and Prevention, Atlanta, Georgia, United States of America
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22
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Brooks MB, Lecca L, Contreras C, Calderon R, Yataco R, Galea J, Huang CC, Murray MB, Becerra MC. Prediction Tool to Identify Children at Highest Risk of Tuberculosis Disease Progression Among Those Exposed at Home. Open Forum Infect Dis 2021; 8:ofab487. [PMID: 34805431 PMCID: PMC8599776 DOI: 10.1093/ofid/ofab487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 09/22/2021] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND There is a dearth of research to understand which children, among those who are exposed at home to tuberculosis (TB), are at the highest risk of TB disease, to tailor care. We sought to identify predictors of TB progression in children. METHODS We conducted a prospective cohort study of children living with adults with pulmonary TB in Lima, Peru (2009-2012). We applied classification and regression tree analysis to examine potential predictors of incident TB disease during 12 months in 3 age groups (0-4, 5-9, and 10-14 years). We calculated the relative risk (RR) for top predictors in each age group. RESULTS Among 4545 children 0-14 years old, 156 (3.4%) were diagnosed with TB within 1 year of household exposure to TB (3.4%, 2.3%, and 4.7% in children 0-4, 5-9, and 10-14 years old, respectively). The most important predictor of TB was having a positive tuberculin skin test (TST) result, with RRs of 6.6 (95% CI, 4.0-10.7), 6.6 (95% CI, 3.2-13.6), and 5.2 (95% CI, 3.0-9.0) in the age groups 0-4, 5-9, and 10-14 years, respectively. In young children with a positive TST, not using isoniazid preventive treatment further increased risk of disease (RR, 12.2 [95% CI, 3.8-39.2]). CONCLUSIONS We present a tool that identifies child household contacts at high risk of TB disease progression based on data collected during contact tracing. In addition to the use of TB preventive therapy for all children exposed at home to TB, those children at highest risk of progressing to TB disease may benefit from more frequent follow-up.
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Affiliation(s)
- Meredith B Brooks
- Department of Global Health and Social Medicine, Harvard Medical School, Boston, Massachusetts, USA
| | - Leonid Lecca
- Department of Global Health and Social Medicine, Harvard Medical School, Boston, Massachusetts, USA
- Partners In Health/Socios En Salud, Lima, Peru
| | | | - Roger Calderon
- Partners In Health/Socios En Salud, Lima, Peru
- Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Rosa Yataco
- Partners In Health/Socios En Salud, Lima, Peru
| | - Jerome Galea
- Department of Global Health and Social Medicine, Harvard Medical School, Boston, Massachusetts, USA
- School of Social Work, University of South Florida, Tampa, Florida, USA
- College of Public Health, University of South Florida, Tampa, Florida, USA
| | - Chuan-Chin Huang
- Department of Global Health and Social Medicine, Harvard Medical School, Boston, Massachusetts, USA
| | - Megan B Murray
- Department of Global Health and Social Medicine, Harvard Medical School, Boston, Massachusetts, USA
| | - Mercedes C Becerra
- Department of Global Health and Social Medicine, Harvard Medical School, Boston, Massachusetts, USA
- Partners In Health/Socios En Salud, Lima, Peru
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MPT64 antigen detection test improves diagnosis of pediatric extrapulmonary tuberculosis in Mbeya, Tanzania. Sci Rep 2021; 11:17540. [PMID: 34475471 PMCID: PMC8413277 DOI: 10.1038/s41598-021-97010-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 08/17/2021] [Indexed: 12/20/2022] Open
Abstract
Pediatric extrapulmonary tuberculosis (EPTB) is a diagnostic challenge. A new immunochemistry based MPT64 antigen detection test has shown improved sensitivity compared to current laboratory tests. The aim of this study was to implement and validate the test performance in a resource limited African setting. Presumptive pediatric (0–18 y) EPTB patients were prospectively enrolled at Mbeya Zonal Referral Hospital, and followed to the end of treatment or until a final diagnosis was reached. Specimens from suspected sites of infection were subject to routine diagnostics, GeneXpert MTB/RIF assay and the MPT64 test. The performance of the tests was assessed using mycobacterial culture as well as a composite reference standard. 30 patients were categorized as TB cases, 31 as non-TB cases and 2 were uncategorized. In the TB group, the three most common infections were adenitis (30%), peritonitis (30%) and meningitis (20%). The sensitivity, specificity, positive predictive value, negative predictive value and accuracy of the MPT64 test was 92%, 88%, 87%, 92% and 90%, respectively. Mortality was equally high among TB/non-TB cases (23% vs 21%), and malnutrition was the main comorbidity among TB cases. The MPT64 test was implementable in the routine diagnostics in a low-resource setting and improved the diagnosis of pediatric EPTB.
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DeAtley T, Workman L, Theron G, Bélard S, Prins M, Bateman L, Grobusch MP, Dheda K, Nicol MP, Sorsdahl K, Kuo C, Stein DJ, Zar HJ. The child ecosystem and childhood pulmonary tuberculosis: A South African perspective. Pediatr Pulmonol 2021; 56:2212-2222. [PMID: 33765350 PMCID: PMC8477372 DOI: 10.1002/ppul.25369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 02/18/2021] [Accepted: 02/21/2021] [Indexed: 11/08/2022]
Abstract
INTRODUCTION This study investigates drivers of childhood pulmonary tuberculosis (PTB) using a childhood ecosystem approach in South Africa. An ecosystem approach toward identifying risk factors for PTB may identify targeted interventions. METHODS Data were collected as part of a prospective cohort study of children presenting at a primary care facility or tertiary hospital with possible TB. Characterization of the childhood ecosystem included proximal, medial, and distal determinants. Proximal determinants included child characteristics that could impact PTB outcomes. Medial determinants included relational factors, such as caregiver health, which might impact interactions with the child. Distal determinants included macro-level determinants of disease, such as socioeconomic status and food insecurity. Children who started on TB treatment were followed for up to 6 months. Multivariate regression models tested independent associations between factors associated with PTB in children. RESULTS Of 1202 children enrolled, 242 (20%) of children had confirmed PTB, 756 (63%) were started on TB treatment, and 444 (37%) had respiratory conditions other than TB. In univariate analyses, childhood malnutrition and caregiver smoking were associated with treated or confirmed PTB. In multivariate analyses, proximal factors, such as male gender and hospitalization, as well as low socioeconomic status as a distal factor, were associated with PTB. CONCLUSIONS Interventions may need to target subgroups of children and families with elevated proximal, medial, and distal risk factors for PTB. Screening for risk factors, such as caregiver's health, may guide targeting. The provision of social protection programs to bolster economic security may be an important intervention for attenuating childhood exposure to risk factors.
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Affiliation(s)
- Teresa DeAtley
- Department of Behavioral and Social Sciences, Brown University School of Public Health, Providence, Rhode Island, USA
| | - Lesley Workman
- Department of Paediatrics and Child Health, Red Cross Childrens Hospital and SA-MRC Unit on Child & Adolescent Health, University of Cape Town, Cape Town, Western Cape, South Africa
| | - Grant Theron
- Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research, SA-MRC Centre for Tuberculosis Research, Stellenbosch University, Stellenbosch, Western Cape, South Africa
| | - Sabine Bélard
- Department of Paediatrics and Child Health, Red Cross Childrens Hospital and SA-MRC Unit on Child & Adolescent Health, University of Cape Town, Cape Town, Western Cape, South Africa
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité—Universitätsmedizin, Berlin, Germany
| | - Margaretha Prins
- Department of Paediatrics and Child Health, Red Cross Childrens Hospital and SA-MRC Unit on Child & Adolescent Health, University of Cape Town, Cape Town, Western Cape, South Africa
| | - Lindy Bateman
- Department of Paediatrics and Child Health, Red Cross Childrens Hospital and SA-MRC Unit on Child & Adolescent Health, University of Cape Town, Cape Town, Western Cape, South Africa
| | - Martin P. Grobusch
- Center of Tropical Medicine and Travel Medicine, Amsterdam University Medical Centers, location AMC, University of Amsterdam, Amsterdam, The Netherlands
- Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Cape Town, Western Cape, South Africa
| | - Keertan Dheda
- Centre for Lung Infection and Immunity, Division of Pulmonology, Department of Medicine and UCT Lung Institute & South African MRC/UCT Centre for the Study of Antimicrobial Resistance, University of Cape Town, Cape Town, Western Cape, South Africa
- Faculty of Infectious and Tropical Diseases, Department of Immunology and Infection, London School of Hygiene and Tropical Medicine, London, UK
| | - Mark P. Nicol
- Division of Infection and Immunity, Division of Medical Microbiology, School of Biomedical Sciences, University of Western Australia, Perth, Australia
- University of Cape Town and National Health Laboratory Services, Cape Town, Western Cape, South Africa
| | - Katherine Sorsdahl
- Department of Psychiatry and Mental Health, Alan J Flisher Centre for Public Mental Health, University of Cape Town, Cape Town, Western Cape, South Africa
| | - Caroline Kuo
- Department of Behavioral and Social Sciences, Brown University School of Public Health, Providence, Rhode Island, USA
- Department of Psychiatry and Neuroscience Institute, University of Cape Town, Cape Town, Western Cape, South Africa
| | - Dan J. Stein
- Department of Psychiatry and Neuroscience Institute, University of Cape Town, Cape Town, Western Cape, South Africa
| | - Heather J. Zar
- Department of Paediatrics and Child Health, Red Cross Childrens Hospital and SA-MRC Unit on Child & Adolescent Health, University of Cape Town, Cape Town, Western Cape, South Africa
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Vonasek B, Ness T, Takwoingi Y, Kay AW, van Wyk SS, Ouellette L, Marais BJ, Steingart KR, Mandalakas AM. Screening tests for active pulmonary tuberculosis in children. Cochrane Database Syst Rev 2021; 6:CD013693. [PMID: 34180536 PMCID: PMC8237391 DOI: 10.1002/14651858.cd013693.pub2] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Globally, children under 15 years represent approximately 12% of new tuberculosis cases, but 16% of the estimated 1.4 million deaths. This higher share of mortality highlights the urgent need to develop strategies to improve case detection in this age group and identify children without tuberculosis disease who should be considered for tuberculosis preventive treatment. One such strategy is systematic screening for tuberculosis in high-risk groups. OBJECTIVES To estimate the sensitivity and specificity of the presence of one or more tuberculosis symptoms, or symptom combinations; chest radiography (CXR); Xpert MTB/RIF; Xpert Ultra; and combinations of these as screening tests for detecting active pulmonary childhood tuberculosis in the following groups. - Tuberculosis contacts, including household contacts, school contacts, and other close contacts of a person with infectious tuberculosis. - Children living with HIV. - Children with pneumonia. - Other risk groups (e.g. children with a history of previous tuberculosis, malnourished children). - Children in the general population in high tuberculosis burden settings. SEARCH METHODS We searched six databases, including the Cochrane Central Register of Controlled Trials, MEDLINE, and Embase, on 14 February 2020 without language restrictions and contacted researchers in the field. SELECTION CRITERIA Cross-sectional and cohort studies where at least 75% of children were aged under 15 years. Studies were eligible if conducted for screening rather than diagnosing tuberculosis. Reference standards were microbiological (MRS) and composite reference standard (CRS), which may incorporate symptoms and CXR. DATA COLLECTION AND ANALYSIS Two review authors independently extracted data and assessed study quality using QUADAS-2. We consolidated symptom screens across included studies into groups that used similar combinations of symptoms as follows: one or more of cough, fever, or poor weight gain and one or more of cough, fever, or decreased playfulness. For combination of symptoms, a positive screen was the presence of one or more than one symptom. We used a bivariate model to estimate pooled sensitivity and specificity with 95% confidence intervals (CIs) and performed analyses separately by reference standard. We assessed certainty of evidence using GRADE. MAIN RESULTS Nineteen studies assessed the following screens: one symptom (15 studies, 10,097 participants); combinations of symptoms (12 studies, 29,889 participants); CXR (10 studies, 7146 participants); and Xpert MTB/RIF (2 studies, 787 participants). Several studies assessed more than one screening test. No studies assessed Xpert Ultra. For 16 studies (84%), risk of bias for the reference standard domain was unclear owing to concern about incorporation bias. Across other quality domains, risk of bias was generally low. Symptom screen (verified by CRS) One or more of cough, fever, or poor weight gain in tuberculosis contacts (4 studies, tuberculosis prevalence 2% to 13%): pooled sensitivity was 89% (95% CI 52% to 98%; 113 participants; low-certainty evidence) and pooled specificity was 69% (95% CI 51% to 83%; 2582 participants; low-certainty evidence). Of 1000 children where 50 have pulmonary tuberculosis, 339 would be screen-positive, of whom 294 (87%) would not have pulmonary tuberculosis (false positives); 661 would be screen-negative, of whom five (1%) would have pulmonary tuberculosis (false negatives). One or more of cough, fever, or decreased playfulness in children aged under five years, inpatient or outpatient (3 studies, tuberculosis prevalence 3% to 13%): sensitivity ranged from 64% to 76% (106 participants; moderate-certainty evidence) and specificity from 37% to 77% (2339 participants; low-certainty evidence). Of 1000 children where 50 have pulmonary tuberculosis, 251 to 636 would be screen-positive, of whom 219 to 598 (87% to 94%) would not have pulmonary tuberculosis; 364 to 749 would be screen-negative, of whom 12 to 18 (2% to 3%) would have pulmonary tuberculosis. One or more of cough, fever, poor weight gain, or tuberculosis close contact (World Health Organization four-symptom screen) in children living with HIV, outpatient (2 studies, tuberculosis prevalence 3% and 8%): pooled sensitivity was 61% (95% CI 58% to 64%; 1219 screens; moderate-certainty evidence) and pooled specificity was 94% (95% CI 86% to 98%; 201,916 screens; low-certainty evidence). Of 1000 symptom screens where 50 of the screens are on children with pulmonary tuberculosis, 88 would be screen-positive, of which 57 (65%) would be on children who do not have pulmonary tuberculosis; 912 would be screen-negative, of which 19 (2%) would be on children who have pulmonary tuberculosis. CXR (verified by CRS) CXR with any abnormality in tuberculosis contacts (8 studies, tuberculosis prevalence 2% to 25%): pooled sensitivity was 87% (95% CI 75% to 93%; 232 participants; low-certainty evidence) and pooled specificity was 99% (95% CI 68% to 100%; 3281 participants; low-certainty evidence). Of 1000 children, where 50 have pulmonary tuberculosis, 63 would be screen-positive, of whom 19 (30%) would not have pulmonary tuberculosis; 937 would be screen-negative, of whom 6 (1%) would have pulmonary tuberculosis. Xpert MTB/RIF (verified by MRS) Xpert MTB/RIF, inpatient or outpatient (2 studies, tuberculosis prevalence 1% and 4%): sensitivity was 43% and 100% (16 participants; very low-certainty evidence) and specificity was 99% and 100% (771 participants; moderate-certainty evidence). Of 1000 children, where 50 have pulmonary tuberculosis, 31 to 69 would be Xpert MTB/RIF-positive, of whom 9 to 19 (28% to 29%) would not have pulmonary tuberculosis; 969 to 931 would be Xpert MTB/RIF-negative, of whom 0 to 28 (0% to 3%) would have tuberculosis. Studies often assessed more symptoms than those included in the index test and symptom definitions varied. These differences complicated data aggregation and may have influenced accuracy estimates. Both symptoms and CXR formed part of the CRS (incorporation bias), which may have led to overestimation of sensitivity and specificity. AUTHORS' CONCLUSIONS We found that in children who are tuberculosis contacts or living with HIV, screening tests using symptoms or CXR may be useful, but our review is limited by design issues with the index test and incorporation bias in the reference standard. For Xpert MTB/RIF, we found insufficient evidence regarding screening accuracy. Prospective evaluations of screening tests for tuberculosis in children will help clarify their use. In the meantime, screening strategies need to be pragmatic to address the persistent gaps in prevention and case detection that exist in resource-limited settings.
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Affiliation(s)
- Bryan Vonasek
- The Global Tuberculosis Program, Texas Children's Hospital, Section of Global and Immigrant Health, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, USA
- Department of Pediatrics, Division of Infectious Diseases, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Tara Ness
- The Global Tuberculosis Program, Texas Children's Hospital, Section of Global and Immigrant Health, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, USA
| | - Yemisi Takwoingi
- Test Evaluation Research Group, Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - Alexander W Kay
- The Global Tuberculosis Program, Texas Children's Hospital, Section of Global and Immigrant Health, Department of Pediatrics, Baylor College of Medicine , Houston, Texas, USA
| | - Susanna S van Wyk
- Centre for Evidence-based Health Care, Epidemiology and Biostatistics, Department of Global Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | | | - Ben J Marais
- Marie Bashir Institute for Infectious Diseases and Biosecurity, University of Sydney, Sydney, Australia
- Children's Hospital at Westmead, University of Sydney, Sydney, Australia
| | - Karen R Steingart
- Honorary Research Fellow, Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Anna M Mandalakas
- The Global Tuberculosis Program, Texas Children's Hospital, Section of Global and Immigrant Health, Department of Pediatrics, Baylor College of Medicine , Houston, Texas, USA
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van Doren TP, Sattenspiel L. The 1918 influenza pandemic did not accelerate tuberculosis mortality decline in early-20th century Newfoundland: Investigating historical and social explanations. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2021; 176:179-191. [PMID: 34009662 DOI: 10.1002/ajpa.24332] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 02/26/2021] [Accepted: 05/03/2021] [Indexed: 12/15/2022]
Abstract
OBJECTIVES The selective mortality hypothesis of tuberculosis after the 1918 influenza pandemic, laid out by Noymer and colleagues, suggests that acute exposure or pre-existing infection with tuberculosis (TB) increased the probability of pneumonia and influenza (P&I) mortality during the 1918 influenza pandemic, leading to a hastened decline of TB mortality in post-pandemic years. This study describes cultural determinants of the post-pandemic TB mortality patterns in Newfoundland and evaluates whether there is support for this observation. MATERIALS AND METHODS Death records and historical documents from the Provincial Archives of Newfoundland and Labrador were used to calculate age-standardized island-wide and sex-based TB mortality, as well as region-level TB mortality, for 1900-1939. The Joinpoint Regression Program (version 4.8.0.1) was used to estimate statistically significant changes in mortality rates. RESULTS Island-wide, females had consistently higher TB mortality for the duration of the study period and a significant shift to lower TB mortality beginning in 1928. There was no similar predicted significant decline for males. On the regional level, no models predicted a significant decline after the 1918 influenza pandemic, except for the West, where significant decline was predicted in the late-1930s. DISCUSSION Although there was no significant decline in TB mortality observed immediately post-pandemic, as has been shown for other Western nations, the female post-pandemic pattern suggests a decline much later. The general lack of significant decrease in TB mortality rate is likely due to Newfoundland's poor nutrition and lack of centralized healthcare rather than a biological interaction between P&I and TB.
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Affiliation(s)
- Taylor P van Doren
- Department of Anthropology, University of Missouri, Columbia, Missouri, USA
| | - Lisa Sattenspiel
- Department of Anthropology, University of Missouri, Columbia, Missouri, USA
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Schramm B, Nganaboy RC, Uwiragiye P, Mukeba D, Abdoubara A, Abdou I, Nshimiymana JC, Sounna S, Hiffler L, Flevaud L, Huerga H. Potential value of urine lateral-flow lipoarabinomannan (LAM) test for diagnosing tuberculosis among severely acute malnourished children. PLoS One 2021; 16:e0250933. [PMID: 33951082 PMCID: PMC8099085 DOI: 10.1371/journal.pone.0250933] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 04/16/2021] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Tuberculosis (TB) is a serious co-morbidity among children with severe acute malnutrition (SAM) and TB diagnosis remains particularly challenging in the very young. We explored whether, in a low HIV-prevalence setting, the detection of mycobacterial lipoarabinomannan (LAM) antigen in urine may assist TB diagnosis in SAM children, a pediatric population currently not included in LAM-testing recommendations. To that end, we assessed LAM test-positivity among SAM children with and without signs or symptoms of TB. METHODS A cross-sectional assessment (February 2016-August 2017) included children <5 years with SAM from an Intensive-Therapeutic-Feeding-Centre in Madaoua, Niger. Group 1: children with signs or symptoms suggestive of TB. Group 2: children without any sign or symptom of TB. Urine-specimens were subjected to DetermineTM TB-LAM lateral-flow-test (using a 4-grade intensity scale for positives). LAM-results were used for study purposes and not for patient management. Programmatic TB-diagnosis was primarily based on patients' clinical symptoms and TB contact history with no systematic access to X-ray or microbiological reference testing. RESULTS 102 (Group 1) and 100 children (Group 2) were included (median age 18 months, 59.4% male, 1.0% HIV-positive). In Group 1, 22 (21.6%) children were started on TB-treatment (probable TB) and none of the children in Group 2. LAM-positivity was 52.0% (53/102) and 37.0% (37/100) in Group 1 and 2, respectively. Low-intensity (Grade 1) LAM test-positivity was similarly high in both Groups (37.3% and 36.0%, respectively), while Grade 2 or 3-positives were mainly detected in Group 1 (Group 1: 14.7%, Group 2: 1.0%, p<0.001). When considering only Grades >1 as positive, LAM-testing detected 22.7% (95%CI: 7.8, 45.4) among probable TB cases, while 99% (95%CI: 94.6, 99.9) of unlikely TB cases (Group 2) tested negative. CONCLUSION These findings suggest the potential utility of LAM urine testing in HIV-negative children with SAM. Determine LAM-positivity with Grades >1 may identify HIV-negative SAM children that are eligible for rapid TB-treatment initiation, though low-intensity (Grade 1) LAM-positive results may not be helpful in this way. Further studies in this specific pediatric population are warranted, including evaluations of new generation LAM tests.
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Diagnostic Performance of the Fujifilm SILVAMP TB-LAM in Children with Presumptive Tuberculosis. J Clin Med 2021; 10:jcm10091914. [PMID: 33925008 PMCID: PMC8124322 DOI: 10.3390/jcm10091914] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/17/2021] [Accepted: 04/23/2021] [Indexed: 11/16/2022] Open
Abstract
Current diagnostics for tuberculosis (TB) only manage to confirm a small proportion of children with TB and require respiratory samples, which are difficult to obtain. There is a need for non-invasive biomarker-based tests as an alternative to sputum testing. Fujifilm SILVAMP TB lipoarabinomannan (FujiLAM), a lateral-flow test to detect lipoarabinomannan in urine, is a novel non-sputum-based point-of-care diagnostic reported to have increased sensitivity for the diagnosis of TB among human immunodeficiency virus (HIV)-infected adults. We evaluate the performance of FujiLAM in children with presumptive TB. Fifty-nine children attending a paediatric hospital in Haiti with compatible signs and symptoms of TB were examined using Xpert MTB/RIF, smear microscopy and X-rays, and classified according to the certainty of diagnosis into bacteriologically confirmed TB (n = 5), unconfirmed TB (bacteriologically negative, n = 50) and unlikely TB (n = 4). Healthy children (n = 20) were enrolled as controls. FujiLAM sensitivity and specificity were 60% and 95% among children with confirmed TB. FujiLAM's high specificity and its characteristics as a point-of-care indicate the test has a good potential for the diagnosis of TB in children.
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Gutiérrez-González LH, Juárez E, Carranza C, Carreto-Binaghi LE, Alejandre A, Cabello-Gutiérrrez C, Gonzalez Y. Immunological Aspects of Diagnosis and Management of Childhood Tuberculosis. Infect Drug Resist 2021; 14:929-946. [PMID: 33727834 PMCID: PMC7955028 DOI: 10.2147/idr.s295798] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 02/11/2021] [Indexed: 12/24/2022] Open
Abstract
The diagnosis of tuberculosis (TB) in children is difficult because of the low sensitivity and specificity of traditional microbiology techniques in this age group. Whereas in adults the culture of Mycobacterium tuberculosis (M. tuberculosis), the gold standard test, detects 80% of positive cases, it only detects around 30-40% of cases in children. The new methods based on the immune response to M. tuberculosis infection could be affected by many factors. It is necessary to evaluate the medical record, clinical features, presence of drug-resistant M. tuberculosis strains, comorbidities, and BCG vaccination history for the diagnosis in children. There is no ideal biomarker for all TB cases in children. A new strategy based on personalized diagnosis could be used to evaluate specific molecules produced by the host immune response and make therapeutic decisions in each child, thereby changing standard immunological signatures to personalized signatures in TB. In this way, immune diagnosis, prognosis, and the use of potential immunomodulators as adjunct TB treatments will meet personalized treatment.
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Affiliation(s)
| | - Esmeralda Juárez
- Microbiology Department, National Institute for Respiratory Diseases Ismael Cosío Villegas, Mexico City, Mexico
| | - Claudia Carranza
- Microbiology Department, National Institute for Respiratory Diseases Ismael Cosío Villegas, Mexico City, Mexico
| | - Laura E Carreto-Binaghi
- Microbiology Department, National Institute for Respiratory Diseases Ismael Cosío Villegas, Mexico City, Mexico
| | - Alejandro Alejandre
- Pediatric Clinic, National Institute for Respiratory Diseases Ismael Cosío Villegas, Mexico City, Mexico
| | - Carlos Cabello-Gutiérrrez
- Virology and Mycology Department, National Institute for Respiratory Diseases Ismael Cosío Villegas, Mexico City, Mexico
| | - Yolanda Gonzalez
- Microbiology Department, National Institute for Respiratory Diseases Ismael Cosío Villegas, Mexico City, Mexico
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Ferluga J, Yasmin H, Bhakta S, Kishore U. Vaccination Strategies Against Mycobacterium tuberculosis: BCG and Beyond. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1313:217-240. [PMID: 34661897 DOI: 10.1007/978-3-030-67452-6_10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Tuberculosis (TB) is a highly contagious disease caused by Mycobacterium tuberculosis (Mtb) and is the major cause of morbidity and mortality across the globe. The clinical outcome of TB infection and susceptibility varies among individuals and even among different populations, contributed by host genetic factors such as polymorphism in the human leukocyte antigen (HLA) alleles as well as in cytokine genes, nutritional differences between populations, immunometabolism, and other environmental factors. Till now, BCG is the only vaccine available to prevent TB but the protection rendered by BCG against pulmonary TB is not uniform. To deliver a vaccine which can give consistent protection against TB is a great challenge with rising burden of drug-resistant TB. Thus, expectations are quite high with new generation vaccines that will improve the efficiency of BCG without showing any discordance for all forms of TB, effective for individual of all ages in all parts of the world. In order to enhance or improve the efficacy of BCG, different strategies are being implemented by considering the immunogenicity of various Mtb virulence factors as well as of the recombinant strains, co-administration with adjuvants and use of appropriate vehicle for delivery. This chapter discusses several such pre-clinical attempts to boost BCG with subunit vaccines tested in murine models and also highlights various recombinant TB vaccines undergoing clinical trials. Promising candidates include new generation of live recombinant BCG (rBCG) vaccines, VPM1002, which are deleted in one or two virulence genes. They encode for the mycobacteria-infected macrophage-inhibitor proteins of host macrophage apoptosis and autophagy, key events in killing and eradication of Mtb. These vaccines are rBCG- ΔureC::hly HMR, and rBCG-ΔureC::hly ΔnuoG. The former vaccine has passed phase IIb in clinical trials involving South African infants and adults. Thus, with an aim of elimination of TB by 2050, all these cumulative efforts to develop a better TB vaccine possibly is new hope for positive outcomes.
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Affiliation(s)
- Janez Ferluga
- Biosciences, College of Health, Medicine and Life Sciences, Brunel University London, Uxbridge, UK
| | - Hadida Yasmin
- Immunology and Cell Biology Laboratory, Department of Zoology, Cooch Behar Panchanan Barma University, Cooch Behar, West Bengal, India
| | - Sanjib Bhakta
- Department of Biological Sciences, Institute of Structural and Molecular Biology, Birkbeck, University of London, London, UK
| | - Uday Kishore
- Biosciences, College of Health, Medicine and Life Sciences, Brunel University London, Uxbridge, UK
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Haerana BT, Prihartono NA, Riono P, Djuwita R, Syarif S, Hadi EN, Kaswandani N. Prevalence of tuberculosis infection and its relationship to stunting in children (under five years) household contact with new tuberculosis cases. Indian J Tuberc 2020; 68:350-355. [PMID: 34099200 DOI: 10.1016/j.ijtb.2020.10.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 10/15/2020] [Accepted: 10/28/2020] [Indexed: 11/17/2022]
Abstract
BACKGROUND Children who inhabit the same house with tuberculosis (TB) patients are at high risk for infection and illness with TB. Nutritional status (stunting) in children is related to the child's ability to withstand MTB (Mycobacterium Tuberculosis). This study aims to estimated the prevalence of tuberculosis infection and its relationship to stunting in children (under five years) with household contact (HHC) with new TB cases. METHODS A cross-sectional design was implemented. Conducted in July 2018-April 2019 at 13 Public Health Center in Makassar City. The sample size was calculated using one sample situation-about precision formula. Samples were children under five who had contact with new diagnosed TB cases. Tuberculosis infection was measured by TST (tuberculin skin test). Logistic regression with causal model to examine TB infection relationship with stunting and covariate variable, analyzed using Stata/MP 13.0 software. RESULTS One hundred twenty-six (126) eligible children. Prevalence of tuberculosis infection was 38.10%. Frequency of stunted was 31 children (24.60%). Stunted nutritional status (aPR): 2.36, 95% CI 1.60-3.44), boys (aPR: 1.47, 95% CI 0.96-2.25), not getting BCG immunization (aPR: 1.58, 95%) CI 0.89-2.82), and high contact intensity (aPR: 2.62, 95% CI 1.10-6.22) best predicted the tuberculosis infection in children with TB case household contacts with a model contribution of 64%. CONCLUSION Stunted nutritional status (moderate and severe), boys, not getting BCG immunization, and high contact intensity are the determinants of TB infection transmission in children HHC with TB. Children under five years of age who have close contact with TB cases should be targeted for priority interventions to prevent the transmission of TB infection and progressing to TB cases.
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Affiliation(s)
- Bs Titi Haerana
- Department of Epidemiology, Faculty of Public Health, University of Indonesia, Indonesia; Department of Public Health, Universitas Islam Negeri Alauddin Makassar, Indonesia.
| | | | - Pandu Riono
- Department of Biostatistics, Faculty of Public Health, University of Indonesia, Indonesia
| | - Ratna Djuwita
- Department of Epidemiology, Faculty of Public Health, University of Indonesia, Indonesia
| | - Syahrizal Syarif
- Department of Epidemiology, Faculty of Public Health, University of Indonesia, Indonesia
| | - Ella Nurlaella Hadi
- Department of Health Education and Behavioral Sciences, University of Indonesia, Indonesia
| | - Nastiti Kaswandani
- Pediatric Department, RSCM Hospital, Faculty of Medicine, University of Indonesia, Indonesia
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Hussen Kabthymer R, Gizaw G, Belachew T. Time to Cure and Predictors of Recovery Among Children Aged 6-59 Months with Severe Acute Malnutrition Admitted in Jimma University Medical Center, Southwest Ethiopia: A Retrospective Cohort Study. Clin Epidemiol 2020; 12:1149-1159. [PMID: 33116909 PMCID: PMC7588275 DOI: 10.2147/clep.s265107] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 09/08/2020] [Indexed: 11/23/2022] Open
Abstract
Purpose Treatment at a stabilization center is an important intervention to avert the huge burden of mortality for children with complicated severe acute malnutrition (SAM). Despite the improvement in hospital coverage and the development of standardized WHO treatment guidelines, recent reviews indicated a wide range in recovery rate (34-88%) due to several context-specific factors. This study aimed to estimate time to recovery and to determine predictors of time to recovery among children aged 6-59 months with severe acute malnutrition. Patients and Methods An institution-based retrospective cohort study design was used among 375 children aged 6-59 months admitted to Jimma University Medical Center, Jimma, Ethiopia from September 2015 to September 2017. All eligible children were enrolled and assessed using a pretested questionnaire. Kaplan-Meir estimates and survival curves were used to compare the time to recovery using log rank test among different characteristics. Cox proportional hazard model was used to identify significant predictors of time to recovery. A p-value less than 0.05 was declared statistically significant. Results The rate of recovery was 4.06 per 100 person days. Median time of recovery for our cohort of SAM children's was 19 days (95% CI: 17.95-20.05). Independent predictors of time to recovery were play stimulation (AHR=1.93, 95% CI: 1.23-3.03), vaccination status (AHR=2.26, 95% CI: 1.12-4.57), tuberculosis (AHR= 0.48, 95% CI: 0.27-0.87), malaria (AHR=0.34,95% CI:0.13-0.88), use of amoxicillin (AHR=1.54, 95% CI: 0.008-2.34), deworming (AHR=1.8, 95% CI: 1.18-2.73), and shock (AHR=0.18, 95% CI: 0.05-0.59). Conclusion The findings of this study showed that the average length of stay on treatment and median time for recovery are within the sphere standard. Psychosocial stimulation, appropriate provision of routine medication and management of medical co-morbidity are needed to promote fast recovery.
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Affiliation(s)
| | - Getu Gizaw
- Department of Population and Family Health, College of Health Sciences, Jimma University, Jimma, Ethiopia
| | - Tefera Belachew
- Department of Population and Family Health, College of Health Sciences, Jimma University, Jimma, Ethiopia
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Seddon JA, Johnson S, Palmer M, van der Zalm MM, Lopez-Varela E, Hughes J, Schaaf HS. Multidrug-resistant tuberculosis in children and adolescents: current strategies for prevention and treatment. Expert Rev Respir Med 2020; 15:221-237. [PMID: 32965141 DOI: 10.1080/17476348.2021.1828069] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
INTRODUCTION An estimated 30,000 children develop multidrug-resistant (MDR) tuberculosis (TB) each year, with only a small proportion diagnosed and treated. This field has historically been neglected due to the perception that children with MDR-TB are challenging to diagnose and treat. Diagnostic and therapeutic developments in adults have improved pediatric management, yet further pediatric-specific research and wider implementation of evidence-based practices are required. AREAS COVERED This review combines the most recent data with expert opinion to highlight best practice in the evaluation, diagnosis, treatment, and support of children and adolescents with MDR-TB disease. A literature search of PubMed was carried out on topics related to MDR-TB in children. This review provides practical advice on MDR-TB prevention and gives updates on new regimens and novel treatments. The review also addresses host-directed therapy, comorbid conditions, special populations, psychosocial support, and post-TB morbidity, as well as identifying outstanding research questions. EXPERT OPINION Increased availability of molecular diagnostics has the potential to aid with the diagnosis of MDR-TB in children. Shorter MDR-TB disease treatment regimens have made therapy safer and shorter and further developments with novel agents and repurposed drugs should lead to additional improvements. The evidence base for MDR-TB preventive therapy is increasing.
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Affiliation(s)
- James A Seddon
- Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University , Stellenbosch, South Africa.,Section of Paediatric Infectious Diseases, Department of Infectious Diseases, Imperial College London , London, UK
| | - Sarah Johnson
- Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University , Stellenbosch, South Africa.,Section of Paediatric Infectious Diseases, Department of Infectious Diseases, Imperial College London , London, UK
| | - Megan Palmer
- Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University , Stellenbosch, South Africa
| | - Marieke M van der Zalm
- Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University , Stellenbosch, South Africa
| | - Elisa Lopez-Varela
- Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University , Stellenbosch, South Africa.,ISGlobal, Barcelona Centre for International Health Research (CRESIB), Hospital Clínic - Universitat De Barcelona , Barcelona, Spain
| | - Jennifer Hughes
- Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University , Stellenbosch, South Africa
| | - H Simon Schaaf
- Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University , Stellenbosch, South Africa
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Abstract
Mathew Kavanagh and co-authors discuss law reform in the global tuberculosis response.
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35
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Liyew Ayalew M, Birhan Yigzaw W, Tigabu A, Gelaw Tarekegn B. <p>Prevalence, Associated Risk Factors and Rifampicin Resistance Pattern of Pulmonary Tuberculosis Among Children at Debre Markos Referral Hospital, Northwest, Ethiopia</p>. Infect Drug Resist 2020; 13:3863-3872. [PMID: 33149631 PMCID: PMC7605619 DOI: 10.2147/idr.s277222] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 10/14/2020] [Indexed: 11/23/2022] Open
Affiliation(s)
- Mulusew Liyew Ayalew
- Department of Medical Microbiology, School of Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, University of Gondar (UOG), Gondar, Ethiopia
| | - Wubet Birhan Yigzaw
- Department of Immunology and Molecular Biology, School of Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, University of Gondar (UOG), Gondar, Ethiopia
| | - Abiye Tigabu
- Department of Medical Microbiology, School of Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, University of Gondar (UOG), Gondar, Ethiopia
- Correspondence: Abiye Tigabu Department of Medical Microbiology, School of Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, University of Gondar (UOG), P.O. box 196, Gondar, EthiopiaTel +251-918-192721 Email
| | - Baye Gelaw Tarekegn
- Department of Medical Microbiology, School of Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, University of Gondar (UOG), Gondar, Ethiopia
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Maruthai K, Sankar S, Subramanian M. Methylation Status of VDR Gene and its Association with Vitamin D Status and VDR Gene Expression in Pediatric Tuberculosis Disease. Immunol Invest 2020; 51:73-87. [PMID: 32847384 DOI: 10.1080/08820139.2020.1810702] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Deficiency in circulatory vitamin D level and vitamin D receptor DNA methylation could be associated with weakened innate immune response and increased susceptibility to tuberculosis (TB) disease in children. Therefore, we aimed to study the effect of vitamin D receptor (VDR) gene methylation on plasma vitamin D level and the expression of the VDR gene in children with active-TB disease. A cross-sectional comparative study was conducted in 43 children with active-TB and 33 healthy control children (HC). The vitamin D level was measured in plasma, while the levels of VDR gene promoter methylation and VDR gene expression were measured in peripheral blood. Children with active-TB showed a significantly lower median vitamin D level than HC [Cases 17.18 ng/mL (IQR, 8.3-18.6 ng/mL); HC 41.34 ng/mL (IQR, 40.2-43.49 ng/mL) (p<0.0001)] and decreased mRNA expression level of VDR gene [Cases 0.51 (IQR, 0.40-0.70); HC 1.06 (IQR, 0.8-1.2) (p<0.0001)] and increased VDR DNA methylation [Cases 75% (IQR, 50-75%); HC 10% (IQR, 10-25%) (p<0.0001)]. The VDR hypermethylation is significantly associated with reduced vitamin D level and decreased expression level of VDR gene. Therefore this inverse association could be involved in the impairment in the VDR mediated cytolytic and antimicrobial effector cell response in pediatric TB disease.
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Affiliation(s)
- Kathirvel Maruthai
- Department of Pediatrics, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
| | - Saranya Sankar
- Department of Neonatology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
| | - Mahadevan Subramanian
- Department of Pediatrics, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
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Association of Dietary Micronutrient Intake with Pulmonary Tuberculosis Treatment Failure Rate: ACohort Study. Nutrients 2020; 12:nu12092491. [PMID: 32824912 PMCID: PMC7551724 DOI: 10.3390/nu12092491] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 08/11/2020] [Accepted: 08/14/2020] [Indexed: 12/14/2022] Open
Abstract
Malnutrition is associated with an increased risk of pulmonary tuberculosis (PTB) treatment failure. Currently, there is no effective adjunctive nutritional therapy. The current objective is to investigate the association of dietary micronutrient intake with PTB treatment outcome.A cohort study including 1834 PTB patients was conducted in Linyi, China. The dietary micronutrient intake was assessed through a three-day 24 h dietary recall questionnaire. The treatment outcome was assessed by combinations of sputum smear and computerized tomography results. A multivariate binary regression model was used to assess the associations. The final model was adjusted for potential confounding factors. A low intake of vitamin C (adjusted OR (95% CI): 1.80 (1.07, 3.04), Ptrend = 0.02) and Zn (adjusted OR (95% CI): 2.52 (1.25, 5.08), Ptrend = 0.02) was associated with a high treatment failure rate. In addition, a low intake of vitamin C and Mn was associated with a severe tuberculosis symptom, as indicated by a high TB score. A supplementation of vitamin C and Zn may be beneficial in PTB treatment. Previous meta-analysis of randomized controlled trials (RCTs) reported a null effect of Zn supplementation on PTB treatment. The effect of vitamin C supplementation should be investigated by RCTs.
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Vonasek B, Ness T, Takwoingi Y, Kay AW, van Wyk SS, Ouellette L, Marais BJ, Steingart KR, Mandalakas AM. Screening tests for active pulmonary tuberculosis in children. THE COCHRANE DATABASE OF SYSTEMATIC REVIEWS 2020. [DOI: 10.1002/14651858.cd013693] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Bryan Vonasek
- The Global Tuberculosis Program, Texas Children’s Hospital, Section of Global and Immigrant Health, Department of Pediatrics; Baylor College of Medicine; Houston Texas USA
| | - Tara Ness
- The Global Tuberculosis Program, Texas Children’s Hospital, Section of Global and Immigrant Health, Department of Pediatrics; Baylor College of Medicine; Houston Texas USA
| | - Yemisi Takwoingi
- Test Evaluation Research Group, Institute of Applied Health Research; University of Birmingham; Birmingham UK
| | - Alexander W Kay
- The Global Tuberculosis Program, Texas Children’s Hospital, Section of Global and Immigrant Health, Department of Pediatrics; Baylor College of Medicine; Houston Texas USA
| | - Susanna S van Wyk
- Centre for Evidence-based Health Care, Epidemiology and Biostatistics, Department of Global Health; Organisation:Faculty of Medicine and Health Sciences, Stellenbosch University; Cape Town South Africa
| | | | - Ben J Marais
- Marie Bashir Institute for Infectious Diseases and Biosecurity; University of Sydney; Sydney Australia
| | - Karen R Steingart
- Honorary Research Fellow; Department of Clinical Sciences, Liverpool School of Tropical Medicine; Liverpool UK
| | - Anna M Mandalakas
- The Global Tuberculosis Program, Texas Children’s Hospital, Section of Global and Immigrant Health, Department of Pediatrics; Baylor College of Medicine; Houston Texas USA
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Ferluga J, Yasmin H, Al-Ahdal MN, Bhakta S, Kishore U. Natural and trained innate immunity against Mycobacterium tuberculosis. Immunobiology 2020; 225:151951. [PMID: 32423788 DOI: 10.1016/j.imbio.2020.151951] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 04/05/2020] [Accepted: 04/20/2020] [Indexed: 12/14/2022]
Abstract
Tuberculosis (TB), caused by Mycobacterium tuberculosis (Mtb) infection, remains a major global health emergency. It is estimated that one third of global population are affected, predominantly with latent granuloma form of the disease. Mtb co-evolved with humans, for its obligatory intra-macrophage phagosome habitat and slow replication, balanced against unique mycobacterial innate immunity, which appears to be highly complex. TB is transmitted via cough aerosol Mtb inhalation. Bovine TB attenuated Bacillus Calmette Guerin (BCG) live vaccine has been in practice for protection of young children from severe disseminated Mtb infection, but not sufficiently for their lungs, as obtained by trials in TB endemic community. To augment BCG vaccine-driven innate and adaptive immunity for neonates and better protection against adult pulmonary TB, a number of BCG pre-vaccination based, subset vaccine candidates have been tested via animal preclinical, followed by safe clinical trials. BCG also enhances innate macrophage trained immunity and memory, through primordial intracellular Toll-like receptors (TLRs) 7 and 9, which recognise distinct mycobacterial molecular pattern signature. This signature is transmitted by TLR signalling via nuclear factor-κB, for activating innate immune transcription and expression of gene profiling in a mycobacterial signature-specific manner. These are epigenetically imprinted in reprogramming of distinct chromatin areas for innate immune memory, to be recalled following lung reinfection. Unique TB innate immunity and its trained memory are considered independent from adaptive immune B and T cells. On the other hand, adaptive immunity is crucial in Mtb containment in granulomatous latency, supported by innate immune cell infiltration. In nearly 5-10 % of susceptible people, latent TB may be activated due to immune evasion by Mtb from intracellular phagosome within macrophage, perpetrating TB. However, BCG and new recombinant BCG vaccines have the capacity, as indicated in pre- and clinical trials, to overcome such Mtb evasion. Various strategies include pro-inflammatory-bactericidal type 1 polarisation (M1) phenotype of the infected macrophage, involving thrombospondin-TLR pathway. Saprophytic M. smegmatis-based recombinant vaccines are also promising candidates against TB. BCG vaccination of neonates/infants in TB endemic countries also reduced their pneumonia caused by various microbes independent of TB immunity. Here, we discuss host immune response against Mtb, its immune evasion strategies, and the important role innate immunity plays in the development of protection against TB.
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Affiliation(s)
- Janez Ferluga
- Biosciences, College of Health and Life Sciences, Brunel University London, Uxbridge UB8 3PH, United Kingdom
| | - Hadida Yasmin
- Immunology and Cell Biology Laboratory, Department of Zoology, Cooch Behar Panchanan Barma University, Cooch Behar, West Bengal, India
| | - Mohammed N Al-Ahdal
- Department of Infection and Immunity, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Sanjib Bhakta
- Institute of Structural and Molecular Biology, Department of Biological Sciences, Birkbeck, University of London, London WC1E 7HX, United Kingdom
| | - Uday Kishore
- Biosciences, College of Health and Life Sciences, Brunel University London, Uxbridge UB8 3PH, United Kingdom.
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40
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Santos ACEZ, Sztajnbok J, Duarte-Neto AN, Sousa AFT, Lopes AGD, Barrientos ACM. Severe gastrintestinal bleeding as an unusual presentation of pediatric tuberculosis: a situation for injectable antituberculous drugs use? Rev Inst Med Trop Sao Paulo 2020; 62:e78. [PMID: 33146307 PMCID: PMC7608070 DOI: 10.1590/s1678-9946202062078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 09/30/2020] [Indexed: 11/22/2022] Open
Abstract
Disseminated tuberculosis is a severe disease with high-mortality that requires early diagnosis and treatment. Intestinal tuberculosis accounts for only 2% of tuberculosis cases worldwide and is extremely rare in children. We report a case of a 4-year-old girl admitted due to disseminated tuberculosis with extensive intestinal involvement characterized by massive intestinal bleeding and hemorrhagic shock. The severity of the intestinal involvement precluded the exclusive use of oral anti-tuberculosis drugs and the patient was successfully treated with a combination of injectable and oral anti-tuberculosis agents. We discuss the importance of a regimen with injectable drugs for treating severe forms of tuberculosis in which the intestinal involvement impaired the use of oral drugs.
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Mollel EW, Maokola W, Todd J, Msuya SE, Mahande MJ. Incidence Rates for Tuberculosis Among HIV Infected Patients in Northern Tanzania. Front Public Health 2019; 7:306. [PMID: 31709218 PMCID: PMC6821649 DOI: 10.3389/fpubh.2019.00306] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 10/07/2019] [Indexed: 12/21/2022] Open
Abstract
Background: HIV and tuberculosis (TB) are leading infectious diseases, with a high risk of co-infection. The risk of TB in people living with HIV (PLHIV) is high soon after sero-conversion and increases as the CD4 counts are depleted. Methodology: We used routinely collected data from Care and Treatment Clinics (CTCs) in three regions in northern Tanzania. All PLHIV attending CTCs between January 2012 to December 2017 were included in the analysis. TB incidence was defined as cases started on anti-TB medications divided by the person-years of follow-up. Poisson regression with frailty models were used to determine incidence rate ratios (IRR) and 95% confidence intervals (95% CI) for predictors of TB incidences among HIV positive patients. Results: Among 78,748 PLHIV, 405 patients developed TB over 195,296 person-years of follow-up, giving an overall TB incidence rate of 2.08 per 1,000 person-years. There was an increased risk of TB incidence, 3.35 per 1,000 person-years, in hospitals compared to lower level health facilities. Compared to CD4 counts of <350 cells/μl, a high CD4 count was associated with lower TB incidence, 81% lower for a CD4 count of 350–500 cells/μl (IRR 0.19, 95% CI 0.04–0.08) and 85% lower for those with a CD4 count above 500 cells/μl (IRR 0.15, 95% CI 0.04–0.64). Independently, those taking ART had 66% lower TB incidences (IRR 0.34, 95% CI 0.15–0.79) compared to those not taking ART. Poor nutritional status and CTC enrollment between 2008 and 2012 were associated with higher TB incidences IRR 9.27 (95% CI 2.15–39.95) and IRR 2.97 (95% CI 1.05–8.43), respectively. Discussion: There has been a decline in TB incidence since 2012, with exception of the year 2017 whereby there was higher TB incidence probably due to better diagnosis of TB following a national initiative. Among HIV positive patients attending CTCs, poor nutritional status, low CD4 counts and not taking ART treatment were associated with higher TB incidence, highlighting the need to get PLHIV on treatment early, and the need for close monitoring of CD4 counts. Data from routinely collected and available health services can be used to provide evidence of the epidemiological risk of TB.
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Affiliation(s)
- Edson W Mollel
- Department of Epidemiology and Biostatistics, Institute of Public Health, Kilimanjaro Christian Medical University College, Moshi, Tanzania.,Northern Zone Blood Transfusion Center, Moshi, Tanzania
| | - Werner Maokola
- Department of Epidemiology and Biostatistics, Institute of Public Health, Kilimanjaro Christian Medical University College, Moshi, Tanzania.,National AIDS Control Program, Dar es Salaam, Tanzania
| | - Jim Todd
- Department of Epidemiology and Biostatistics, Institute of Public Health, Kilimanjaro Christian Medical University College, Moshi, Tanzania.,Department of Population Health, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Sia E Msuya
- Department of Epidemiology and Biostatistics, Institute of Public Health, Kilimanjaro Christian Medical University College, Moshi, Tanzania.,Department of Community Health, Institute of Public Health, Kilimanjaro Christian Medical University College, Moshi, Tanzania.,Department of Community Medicine, KCMC Hospital, Moshi, Tanzania
| | - Michael J Mahande
- Department of Epidemiology and Biostatistics, Institute of Public Health, Kilimanjaro Christian Medical University College, Moshi, Tanzania
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Araf PMA, Airlangga E. The Body Weights' Follow Up Before and After 6 Months Therapy of Oral Anti-Tuberculosis Therapy in Children in Medan, Sumatra Utara. Open Access Maced J Med Sci 2019; 7:3469-3471. [PMID: 32002076 PMCID: PMC6980828 DOI: 10.3889/oamjms.2019.448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 09/15/2019] [Accepted: 09/16/2019] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND: Tuberculosis remains an important issue of children health, particularly in developing countries. Body Weight is one of the tuberculosis symptoms and used to identified children tuberculosis scoring in Indonesia. AIM: The study aims to get an overview of body weight and body weight increment during oral anti-tuberculosis in Medan, Sumatra Utara. METHODS: Medical records of children with tuberculosis in the Haji Hospital of Sumatra Utara located in Medan during January 2018 till July 2018 were compiled for the children characteristic, body weight before and after oral anti-tuberculosis treatment. RESULTS: There were 99 children medical records included in the study, 42.4% children 1 to 5 years old treated as tuberculosis. At the early treatment, many children were in severe malnutrition (85%). However, after 6 months of tuberculosis treatment, there were many children (78%) got their body weight increment. CONCLUSION: Body weight is an important sign and symptom of children with tuberculosis.
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Affiliation(s)
- Pany M Al Araf
- Department of Child Health, Faculty of Medicine, Universitas Muhammadiyah Sumatra Utara, Medan 20235, Sumatra Utara, Indonesia
| | - Eka Airlangga
- Department of Child Health, Faculty of Medicine, Universitas Muhammadiyah Sumatra Utara, Medan 20235, Sumatra Utara, Indonesia
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Bottineau MC, Kouevi KA, Chauvet E, Garcia DM, Galetto-Lacour A, Wagner N. A misleading appearance of a common disease: tuberculosis with generalized lymphadenopathy-a case report. Oxf Med Case Reports 2019; 2019:omz090. [PMID: 31772755 PMCID: PMC6765374 DOI: 10.1093/omcr/omz090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/04/2019] [Accepted: 07/22/2019] [Indexed: 11/21/2022] Open
Abstract
Introduction: Tuberculosis is a common illness for vulnerable populations in resource-limited settings. Lymph nodes in tuberculosis represent the most frequent extra-pulmonary form of tuberculosis in children, but lymph nodes are rarely generalized and large. We report an atypical pediatric case of tuberculosis with lymphadenopathy. Patient concerns and findings: A two-year-old child with severe acute malnutrition presented with painless, generalized, and excessively large nodes which were not compressive and were without fistula. Main diagnoses, interventions, outcomes: Fine needle aspiration was performed and led to the detection of lymph node granulomatous lymphadenitis suggestive of tuberculosis. Conclusion: The child was immediately initiated on anti-tuberculosis therapy with a very successful outcome. Clinicians should be aware of atypical manifestations such as the one we describe in the interest of swift diagnosis and initiation of treatment.
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Affiliation(s)
| | | | - Eline Chauvet
- Hôpital d'Enfants, Hôpitaux Universitaires de Genève, Geneva, Switzerland
| | | | - Annick Galetto-Lacour
- Department of Pediatrics Emergencies (SAUP), University Hospitals of Geneva, Switzerland
| | - Noémie Wagner
- Department of Pediatrics, Pediatric Infectious Diseases, University Hospitals of Geneva, Switzerland
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The evolving research agenda for paediatric tuberculosis infection. THE LANCET. INFECTIOUS DISEASES 2019; 19:e322-e329. [PMID: 31221543 DOI: 10.1016/s1473-3099(18)30787-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 10/19/2018] [Accepted: 12/11/2018] [Indexed: 12/30/2022]
Abstract
Following exposure to tuberculosis and subsequent infection, children often progress to tuberculosis disease more rapidly than adults. And yet the natural history of tuberculosis in children, as a continuum from exposure to infection and then to disease, is poorly understood. Children are rarely diagnosed with tuberculosis infection in routine care in international settings and few receive tuberculosis infection treatment. In this Personal View, we review the most up-to-date knowledge in three areas of childhood tuberculosis infection-namely, pathophysiology, diagnosis, and treatment. We then outline what is missing in each of these three areas to generate a priority research agenda. Finally, we suggest potential study designs that might answer these questions. Understanding of pathophysiology could be improved through animal models, laboratory studies assessing the immunological responses of blood or respiratory samples to Mycobacterium spp in vitro, as well as investigating immune responses in children exposed to tuberculosis. Identification of children with sub-clinical disease and at high risk of progression to clinically overt disease, would allow treatment to be targeted at those most likely to benefit. Optimisation and discovery of novel treatments for tuberculosis infection in children should account for mechanisms of action of tuberculosis drugs, as well as child-specific factors including pharmacokinetics and appropriate formulations. To conduct these studies, a change in mindset is required, with a recognition that the diagnosis and treatment of tuberculosis infection in children is a necessary component in addressing the overall tuberculosis epidemic. Collaboration between stakeholders will be required and funding will need to increase, both for research and implementation. The consequences of inaction, however, will lead to further decades of children suffering from what should increasingly be recognised as a preventable disease.
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Gwela A, Mupere E, Berkley JA, Lancioni C. Undernutrition, Host Immunity and Vulnerability to Infection Among Young Children. Pediatr Infect Dis J 2019; 38:e175-e177. [PMID: 31306401 PMCID: PMC7613497 DOI: 10.1097/inf.0000000000002363] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Agnes Gwela
- The Childhood Acute Illness & Nutrition (CHAIN) Network, Nairobi,KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Ezekiel Mupere
- The Childhood Acute Illness & Nutrition (CHAIN) Network, Nairobi,Department of Pediatrics, Makerere University, Kampala, Uganda
| | - James A Berkley
- The Childhood Acute Illness & Nutrition (CHAIN) Network, Nairobi,KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya,Centre for Tropical Medicine & Global Health, University of Oxford, Oxford, United Kingdom
| | - Christina Lancioni
- The Childhood Acute Illness & Nutrition (CHAIN) Network, Nairobi,Department of Pediatrics, Oregon Health and Science University, Portland, Oregon
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Radtke KK, Dooley KE, Dodd PJ, Garcia-Prats AJ, McKenna L, Hesseling AC, Savic RM. Alternative dosing guidelines to improve outcomes in childhood tuberculosis: a mathematical modelling study. THE LANCET CHILD & ADOLESCENT HEALTH 2019; 3:636-645. [PMID: 31324596 DOI: 10.1016/s2352-4642(19)30196-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 04/02/2019] [Accepted: 04/25/2019] [Indexed: 12/24/2022]
Abstract
BACKGROUND Malnourished and young children are particularly susceptible to severe forms of tuberculosis and poor treatment response. WHO dosing guidelines for drugs for tuberculosis treatment are based only on weight, which might lead to systematic underdosing and poor outcomes in these children. We aimed to assess and quantify the population effect of WHO guidelines for drug-susceptible tuberculosis in children in the 20 countries with the highest disease burden. METHODS We used an integrated model that linked country-specific demographic data at the individual level from the 20 countries with the highest disease burden to pharmacokinetic, outcome, and epidemiological models. We estimated tuberculosis treatment outcomes in children younger than 5 years following WHO guidelines (children are dosed by weight bands corresponding to the number of fixed-dose combination tablets [75 mg rifampicin, 50 mg isoniazid, 150 mg pyrazinamide]) and two alternative dosing strategies: one based on a proposed algorithm that uses age, weight, and available formulations, in which underweight children would receive the same drug doses as would normal weight children of the same age; and another based on an individualised algorithm without dose limitations, in which derived doses results in target exposure attainment for the typical child. FINDINGS We estimated that 57 234 (43%) of 133 302 children younger than 5 years who were treated for tuberculosis in 2017 were underdosed with WHO dosing and only 47% of children would reach the rifampicin exposure target. Underdosing and subtherapeutic exposures were more common among malnourished children than among age-matched healthy children. The proposed dosing approach improved estimated rifampicin target exposure attainment to 62% and equalised outcomes by nutritional status. An estimated third of unfavourable treatment outcomes might be resolved with this dosing strategy, saving the lives of a minimum of 2423 children in these countries annually. With individualised dosing approaches, almost all children could achieve adequate exposure for cure. INTERPRETATION This work shows that a simple change in dosing procedure to include age and nutritional status, requiring no additional measurements or new drug formulations, is one approach to improve tuberculosis treatment outcomes in children, especially malnourished children who are at high risk of mortality. FUNDING Eunice Kennedy Shriver National Institute of Child Health and Human Development and UK Medical Research Council.
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Affiliation(s)
- Kendra K Radtke
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, CA, USA
| | - Kelly E Dooley
- Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Peter J Dodd
- School of Health and Related Research, University of Sheffield, Sheffield, UK
| | - Anthony J Garcia-Prats
- Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | | | - Anneke C Hesseling
- Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Radojka M Savic
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, CA, USA.
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47
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Wobudeya E, Jaganath D, Sekadde MP, Nsangi B, Haq H, Cattamanchi A. Outcomes of empiric treatment for pediatric tuberculosis, Kampala, Uganda, 2010-2015. BMC Public Health 2019; 19:446. [PMID: 31035984 PMCID: PMC6489192 DOI: 10.1186/s12889-019-6821-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 04/15/2019] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Childhood tuberculosis (TB) diagnoses often lack microbiologic confirmation and require empiric treatment. Barriers to empiric treatment include concern for poor outcomes and adverse effects. We thus determined the outcomes of empiric TB treatment from a retrospective cohort of children at a national referral hospital in Kampala, Uganda from 2010 to 2015. METHODS Children were diagnosed clinically and followed through treatment. Demographics, clinical data, outcome and any adverse events were extracted from patient charts. A favorable outcome was defined as a child completing treatment with clinical improvement. We performed logistic regression to assess factors associated with loss to follow up and death. RESULTS Of 516 children, median age was 36 months (IQR 15-73), 55% (95% CI 51-60%) were male, and HIV prevalence was 6% (95% CI 4-9%). The majority (n = 422, 82, 95% CI 78-85%) had a favorable outcome, with no adverse events that required treatment discontinuation. The most common unfavorable outcomes were loss to follow-up (57/94, 61%) and death (35/94, 37%; overall mortality 7%). In regression analysis, loss to follow up was associated with age 10-14 years (OR 2.38, 95% CI 1.15-4.93, p = 0.02), HIV positivity (OR 3.35, 95% CI 1.41-7.92, p = 0.01), hospitalization (OR 4.14, 95% CI 2.08-8.25, p < 0.001), and living outside of Kampala (OR 2.64, 95% CI 1.47-4.71, p = 0.001). Death was associated with hospitalization (OR 4.57, 95% CI 2.0-10.46, p < 0.001), severe malnutrition (OR 2.98, 95% CI 1.07-8.27, p = 0.04), baseline hepatomegaly (OR 4.11, 95% CI 2.09-8.09, p < 0.001), and living outside of Kampala (OR 2.41, 95% CI 1.17-4.96, p = 0.02). CONCLUSIONS Empiric treatment of child TB was effective and safe, but treatment success remained below the 90% target. Addressing co-morbidities and improving retention in care may reduce unfavorable outcomes.
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Affiliation(s)
- Eric Wobudeya
- Directorate of Pediatrics & Child Health, Mulago National Referral Hospital, P.O. Box 23491, Kampala, Uganda.
| | - Devan Jaganath
- Division of Pediatric Infectious Diseases, University of California, 550 16th St. 4th floor, San Francisco, CA, 94158, USA
| | - Moorine Penninah Sekadde
- National TB and Leprosy Program (NTLP), Plot 6, Lourdel Road, Nakasero, P. O. Box 7272, Kampala, Uganda
| | - Betty Nsangi
- USAID RHITES-EC, University Research Co. LLC, Plot 40, Ntinda II Road, PO Box 28745, Kampala, Uganda
| | - Heather Haq
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Adithya Cattamanchi
- Division of Pulmonary and Critical Care Medicine, University of California, 1001 Potrero Ave, SFGH 5, San Francisco, CA, 94110, USA.,Center for Vulnerable Populations, Department of Medicine, University of California, San Francisco, USA.,Curry International Tuberculosis Center, University of California, San Francisco, USA
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48
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Reid MJA, Arinaminpathy N, Bloom A, Bloom BR, Boehme C, Chaisson R, Chin DP, Churchyard G, Cox H, Ditiu L, Dybul M, Farrar J, Fauci AS, Fekadu E, Fujiwara PI, Hallett TB, Hanson CL, Harrington M, Herbert N, Hopewell PC, Ikeda C, Jamison DT, Khan AJ, Koek I, Krishnan N, Motsoaledi A, Pai M, Raviglione MC, Sharman A, Small PM, Swaminathan S, Temesgen Z, Vassall A, Venkatesan N, van Weezenbeek K, Yamey G, Agins BD, Alexandru S, Andrews JR, Beyeler N, Bivol S, Brigden G, Cattamanchi A, Cazabon D, Crudu V, Daftary A, Dewan P, Doepel LK, Eisinger RW, Fan V, Fewer S, Furin J, Goldhaber-Fiebert JD, Gomez GB, Graham SM, Gupta D, Kamene M, Khaparde S, Mailu EW, Masini EO, McHugh L, Mitchell E, Moon S, Osberg M, Pande T, Prince L, Rade K, Rao R, Remme M, Seddon JA, Selwyn C, Shete P, Sachdeva KS, Stallworthy G, Vesga JF, Vilc V, Goosby EP. Building a tuberculosis-free world: The Lancet Commission on tuberculosis. Lancet 2019; 393:1331-1384. [PMID: 30904263 DOI: 10.1016/s0140-6736(19)30024-8] [Citation(s) in RCA: 216] [Impact Index Per Article: 43.2] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Revised: 12/20/2018] [Accepted: 12/25/2018] [Indexed: 11/22/2022]
Affiliation(s)
- Michael J A Reid
- Department of Medicine, University of California San Francisco, San Francisco, CA, USA; Institute for Global Health Sciences, University of California San Francisco, San Francisco, CA, USA.
| | - Nimalan Arinaminpathy
- School of Public Health, Imperial College London, London, UK; Faculty of Medicine, Imperial College London, London, UK
| | - Amy Bloom
- Tuberculosis Division, United States Agency for International Development, Washington, DC, USA
| | - Barry R Bloom
- Department of Global Health and Population, Harvard University, Cambridge, MA, USA
| | | | - Richard Chaisson
- Departments of Medicine, Epidemiology, and International Health, Johns Hopkins School of Medicine, Baltimore, MA, USA
| | | | | | - Helen Cox
- Department of Pathology, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
| | | | - Mark Dybul
- Department of Medicine, Centre for Global Health and Quality, Georgetown University, Washington, DC, USA
| | | | - Anthony S Fauci
- National Institute of Allergy and Infectious Diseases, US National Institutes of Health, Maryland, MA, USA
| | | | - Paula I Fujiwara
- Department of Tuberculosis and HIV, The International Union Against Tuberculosis and Lung Disease, Paris, France
| | - Timothy B Hallett
- School of Public Health, Imperial College London, London, UK; Faculty of Medicine, Imperial College London, London, UK
| | | | | | - Nick Herbert
- Global TB Caucus, Houses of Parliament, London, UK
| | - Philip C Hopewell
- Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Chieko Ikeda
- Department of GLobal Health, Ministry of Heath, Labor and Welfare, Tokyo, Japan
| | - Dean T Jamison
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, USA; Institute for Global Health Sciences, University of California San Francisco, San Francisco, CA, USA
| | - Aamir J Khan
- Interactive Research & Development, Karachi, Pakistan
| | - Irene Koek
- Global Health Bureau, United States Agency for International Development, Washington, DC, USA
| | - Nalini Krishnan
- Resource Group for Education and Advocacy for Community Health, Chennai, India
| | - Aaron Motsoaledi
- South African National Department of Health, Pretoria, South Africa
| | - Madhukar Pai
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, QC, Canada; McGill International TB Center, McGill University, Montreal, QC, Canada
| | - Mario C Raviglione
- University of Milan, Milan, Italy; Global Studies Institute, University of Geneva, Geneva, Switzerland
| | - Almaz Sharman
- Academy of Preventive Medicine of Kazakhstan, Almaty, Kazakhstan
| | - Peter M Small
- Global Health Institute, School of Medicine, Stony Brook University, Stony Brook, NY, USA
| | | | - Zelalem Temesgen
- Department of Infectious Diseases, Mayo Clinic, Rochester, MI, USA
| | - Anna Vassall
- Department of Global Health and Development, Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, London, UK; Amsterdam Institute for Global Health and Development, University of Amsterdam, Amsterdam, Netherlands
| | | | | | - Gavin Yamey
- Center for Policy Impact in Global Health, Duke Global Health Institute, Duke University, Durham, NC, USA
| | - Bruce D Agins
- Department of Medicine, University of California San Francisco, San Francisco, CA, USA; Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, USA
| | - Sofia Alexandru
- Institutul de Ftiziopneumologie Chiril Draganiuc, Chisinau, Moldova
| | - Jason R Andrews
- Division of Infectious Diseases and Geographic Medicine, Stanford University, Stanford, CA, USA
| | - Naomi Beyeler
- Institute for Global Health Sciences, University of California San Francisco, San Francisco, CA, USA
| | - Stela Bivol
- Center for Health Policies and Studies, Chisinau, Moldova
| | - Grania Brigden
- Department of Tuberculosis and HIV, The International Union Against Tuberculosis and Lung Disease, Paris, France
| | - Adithya Cattamanchi
- Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Danielle Cazabon
- McGill International TB Center, McGill University, Montreal, QC, Canada
| | - Valeriu Crudu
- Center for Health Policies and Studies, Chisinau, Moldova
| | - Amrita Daftary
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, QC, Canada; McGill International TB Center, McGill University, Montreal, QC, Canada
| | - Puneet Dewan
- Bill & Melinda Gates Foundation, New Delhi, India
| | - Laurie K Doepel
- National Institute of Allergy and Infectious Diseases, US National Institutes of Health, Maryland, MA, USA
| | - Robert W Eisinger
- National Institute of Allergy and Infectious Diseases, US National Institutes of Health, Maryland, MA, USA
| | - Victoria Fan
- T H Chan School of Public Health, Harvard University, Cambridge, MA, USA; Office of Public Health Studies, University of Hawaii, Mānoa, HI, USA
| | - Sara Fewer
- Institute for Global Health Sciences, University of California San Francisco, San Francisco, CA, USA
| | - Jennifer Furin
- Division of Infectious Diseases & HIV Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - Jeremy D Goldhaber-Fiebert
- Centers for Health Policy and Primary Care and Outcomes Research, Stanford University, Stanford, CA, USA
| | - Gabriela B Gomez
- Department of Global Health and Development, Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, London, UK
| | - Stephen M Graham
- Department of Tuberculosis and HIV, The International Union Against Tuberculosis and Lung Disease, Paris, France; Department of Paediatrics, Center for International Child Health, University of Melbourne, Melbourne, VIC, Australia; Burnet Institute, Melbourne, VIC, Australia
| | - Devesh Gupta
- Revised National TB Control Program, New Delhi, India
| | - Maureen Kamene
- National Tuberculosis, Leprosy and Lung Disease Program, Ministry of Health, Nairobi, Kenya
| | | | - Eunice W Mailu
- National Tuberculosis, Leprosy and Lung Disease Program, Ministry of Health, Nairobi, Kenya
| | | | - Lorrie McHugh
- Office of the Secretary-General's Special Envoy on Tuberculosis, United Nations, Geneva, Switzerland
| | - Ellen Mitchell
- International Institute of Social Studies, Erasmus University Rotterdam, The Hague, Netherland
| | - Suerie Moon
- Department of Global Health and Population, Harvard University, Cambridge, MA, USA; Global Health Centre, The Graduate Institute Geneva, Geneva, Switzerland
| | | | - Tripti Pande
- McGill International TB Center, McGill University, Montreal, QC, Canada
| | - Lea Prince
- Centers for Health Policy and Primary Care and Outcomes Research, Stanford University, Stanford, CA, USA
| | | | - Raghuram Rao
- Ministry of Health and Family Welfare, New Delhi, India
| | - Michelle Remme
- International Institute for Global Health, United Nations University, Kuala Lumpur, Malaysia
| | - James A Seddon
- Department of Medicine, Imperial College London, London, UK; Faculty of Medicine, Imperial College London, London, UK; Department of Paediatrics and Child Health, Stellenbosch University, Stellenbosch, South Africa
| | - Casey Selwyn
- Bill & Melinda Gates Foundation, Seattle, WA, USA
| | - Priya Shete
- Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | | | | | - Juan F Vesga
- School of Public Health, Imperial College London, London, UK; Faculty of Medicine, Imperial College London, London, UK
| | | | - Eric P Goosby
- Department of Medicine, University of California San Francisco, San Francisco, CA, USA; Institute for Global Health Sciences, University of California San Francisco, San Francisco, CA, USA
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49
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Baindara P. Host-directed therapies to combat tuberculosis and associated non-communicable diseases. Microb Pathog 2019; 130:156-168. [PMID: 30876870 DOI: 10.1016/j.micpath.2019.03.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 03/03/2019] [Accepted: 03/04/2019] [Indexed: 12/22/2022]
Abstract
Mycobacterium tuberculosis (Mtb) has coevolved with a human host to evade and exploit the immune system in multiple ways. Mtb is an enormously successful human pathogen that can remain undetected in hosts for decades without causing clinical disease. While tuberculosis (TB) represents a perfect prototype of host-pathogen interaction, it remains a major challenge to develop new therapies to combat mycobacterial infections. Additionally, recent studies emphasize on comorbidity of TB with different non-communicable diseases (NCDs), highlighting the impact of demographic and lifestyle changes on the global burden of TB. In the recent past, host-directed therapies have emerged as a novel and promising approach to treating TB. Drugs modulating host responses are likely to avoid the development of bacterial resistance which is a major public health concern for TB treatment. Interestingly, many of these drugs also form treatment strategies for non-communicable diseases. In general, technological advances along with novel host-directed therapies may open an exciting and promising research area, which can eventually deliver effective TB treatment as well as curtail the emergent synergy with NCDs.
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Affiliation(s)
- Piyush Baindara
- Department of Microbiology and Immunology, University of Arkansas for Medical Sciences, Little Rock, USA.
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50
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Basu Roy R, Whittaker E, Seddon JA, Kampmann B. Tuberculosis susceptibility and protection in children. THE LANCET. INFECTIOUS DISEASES 2019; 19:e96-e108. [PMID: 30322790 PMCID: PMC6464092 DOI: 10.1016/s1473-3099(18)30157-9] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 01/27/2018] [Accepted: 02/09/2018] [Indexed: 12/14/2022]
Abstract
Children represent both a clinically important population susceptible to tuberculosis and a key group in whom to study intrinsic and vaccine-induced mechanisms of protection. After exposure to Mycobacterium tuberculosis, children aged under 5 years are at high risk of progressing first to tuberculosis infection, then to tuberculosis disease and possibly disseminated forms of tuberculosis, with accompanying high risks of morbidity and mortality. Children aged 5-10 years are somewhat protected, until risk increases again in adolescence. Furthermore, neonatal BCG programmes show the clearest proven benefit of vaccination against tuberculosis. Case-control comparisons from key cohorts, which recruited more than 15 000 children and adolescents in total, have identified that the ratio of monocytes to lymphocytes, activated CD4 T cell count, and a blood RNA signature could be correlates of risk for developing tuberculosis. Further studies of protected and susceptible populations are necessary to guide development of novel tuberculosis vaccines that could facilitate the achievement of WHO's goal to eliminate deaths from tuberculosis in childhood.
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Affiliation(s)
- Robindra Basu Roy
- Centre for International Child Health, Department of Paediatrics, Imperial College London, London, UK; Vaccines and Immunity Theme MRC Unit The Gambia at London School of Hygiene and Tropical Medicine, Fajara, The Gambia
| | - Elizabeth Whittaker
- Centre for International Child Health, Department of Paediatrics, Imperial College London, London, UK
| | - James A Seddon
- Centre for International Child Health, Department of Paediatrics, Imperial College London, London, UK
| | - Beate Kampmann
- Centre for International Child Health, Department of Paediatrics, Imperial College London, London, UK; Vaccines and Immunity Theme MRC Unit The Gambia at London School of Hygiene and Tropical Medicine, Fajara, The Gambia.
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