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Pei X, Zhong T, Yang C, Sun L, Chen M, Xu M. Cost-Effectiveness of Community-Based Active Case Finding Strategy for Tuberculosis: Evidence From Shenzhen, China. J Infect Dis 2024; 229:1866-1877. [PMID: 38262678 DOI: 10.1093/infdis/jiae024] [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: 06/09/2023] [Revised: 01/13/2024] [Accepted: 01/22/2024] [Indexed: 01/25/2024] Open
Abstract
BACKGROUND Active case finding (ACF) is a potentially promising approach for the early identification and treatment of tuberculosis patients. However, evidence on its cost-effectiveness, particularly in low- and middle-income countries, remains limited. This study evaluates the cost-effectiveness of a community-based ACF practice in Shenzhen, China. METHODS We employed a Markov model-based decision analytic method to assess the costs and effectiveness of 3 tuberculosis detection strategies: passive case finding (PCF), basic ACF, and advanced ACF. The analysis was conducted from a societal perspective on a dynamic cohort over a 20-year horizon, focusing on active tuberculosis (ATB) prevalence and the incremental cost-effectiveness ratio (ICER). RESULTS Compared to the PCF strategy, the basic and advanced ACF strategies effectively reduced ATB cases by 6.8 and 10.2 per 100 000 population, respectively, by the final year of this 20-year period. The ICER for the basic and advanced ACF strategies were ¥14 757 and ¥8217 per quality-adjusted life-year, respectively. Both values fell below the cost-effectiveness threshold. CONCLUSIONS Our findings indicate that the community-based ACF screening strategy, which targets individuals exhibiting tuberculosis symptoms, is cost-effective. This underscores the potential benefits of adopting similar community-based ACF strategies for symptomatic populations in tuberculosis-endemic areas.
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Affiliation(s)
- Xingtong Pei
- School of Public Health (Shenzhen), Shenzhen Campus, Sun Yat-sen University, Shenzhen, China
| | - Tao Zhong
- Department of Tuberculosis Control and Prevention, Shenzhen Nanshan Center for Chronic Disease Control, Shenzhen, China
| | - Chongguang Yang
- School of Public Health (Shenzhen), Shenzhen Campus, Sun Yat-sen University, Shenzhen, China
| | - Li Sun
- Department of Health Services Research and Policy, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Meiru Chen
- School of Public Health (Shenzhen), Shenzhen Campus, Sun Yat-sen University, Shenzhen, China
| | - Mingming Xu
- School of Public Health (Shenzhen), Shenzhen Campus, Sun Yat-sen University, Shenzhen, China
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Bonnet M, Vasiliu A, Tchounga BK, Cuer B, Fielding K, Ssekyanzi B, Tchakounte Youngui B, Cohn J, Dodd PJ, Tiendrebeogo G, Tchendjou P, Simo L, Okello RF, Kuate Kuate A, Turyahabwe S, Atwine D, Graham SM, Casenghi M. Effectiveness of a community-based approach for the investigation and management of children with household tuberculosis contact in Cameroon and Uganda: a cluster-randomised trial. Lancet Glob Health 2023; 11:e1911-e1921. [PMID: 37918417 DOI: 10.1016/s2214-109x(23)00430-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 08/22/2023] [Accepted: 09/01/2023] [Indexed: 11/04/2023]
Abstract
BACKGROUND Globally, the uptake of tuberculosis-preventive treatment (TPT) among children with household tuberculosis contact remains low, partly due to the necessity of bringing children to health facilities for investigations. This study aimed to evaluate the effect on TPT initiation and completion of community-based approaches to tuberculosis contact investigations in Cameroon and Uganda. METHODS We did a parallel, cluster-randomised, controlled trial across 20 clusters (consisting of 25 district hospitals and primary health centres) in Cameroon and Uganda, which were randomised (1:1) to receive a community-based approach (intervention group) or standard-of-care facility-based approach to contact screening and management (control group). The community-based approach consisted of symptom-based tuberculosis screening of all household contacts by community health workers at the household, with referral of symptomatic contacts to local facilities for investigations. Initiation of TPT (3-month course of rifampicin-isoniazid) was done by a nurse in the household, and home visits for TPT follow-up were done by community health workers. Index patients were people aged 15 years or older with bacteriologically confirmed, drug-susceptible, pulmonary tuberculosis diagnosed less than 1 month before inclusion and who declared at least one child or young adolescent (aged 0-14 years) household contact. The primary endpoint was the proportion of declared child contacts in the TPT target group (those aged <5 years irrespective of HIV status, and children aged 5-14 years living with HIV) who commenced and completed TPT, assessed in the modified intention-to-treat population (excluding enrolled index patients and their contacts who did not fit the eligibility criteria). Descriptive cascade of care assessment and generalised linear mixed modelling were used for comparison. This study is registered with ClinicalTrials.gov (NCT03832023). FINDINGS The study included nine clusters in the intervention group (after excluding one cluster that did not enrol any index patients for >2 months) and ten in the control group. Between Oct 14, 2019 and Jan 13, 2022, 2894 child contacts were declared by 899 index patients with bacteriologically confirmed tuberculosis. Among all child contacts declared, 1548 (81·9%) of 1889 in the intervention group and 475 (47·3%) of 1005 in the control group were screened for tuberculosis. 1400 (48·4%) child contacts were considered to be in the TPT target group: 941 (49·8%) of 1889 in the intervention group and 459 (45·7%) of 1005 in the control group. In the TPT target group, TPT was commenced and completed in 752 (79·9%) of 941 child contacts in the intervention group and 283 (61·7%) of 459 in the control group (odds ratio 3·06 [95% CI 1·24-7·53]). INTERPRETATION A community-based approach using community health workers can significantly increase contact investigation coverage and TPT completion among eligible child contacts in a tuberculosis-endemic setting. FUNDING Unitaid. TRANSLATION For the French translation of the abstract see Supplementary Materials section.
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Affiliation(s)
- Maryline Bonnet
- TransVIHMI, University Montpellier, Institut de Recherche pour le Développement, INSERM, Montpellier, France.
| | - Anca Vasiliu
- TransVIHMI, University Montpellier, Institut de Recherche pour le Développement, INSERM, Montpellier, France; Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | | | - Benjamin Cuer
- TransVIHMI, University Montpellier, Institut de Recherche pour le Développement, INSERM, Montpellier, France
| | | | | | | | - Jennifer Cohn
- Department of Innovation and New Technology, Elizabeth Glaser Pediatric AIDS Foundation, Geneva, Switzerland
| | - Peter J Dodd
- School of Health and Related Research, University of Sheffield, Sheffield, UK
| | - Georges Tiendrebeogo
- University Montpellier, Institut de Recherche pour le Développement, INSERM, Montpellier, France
| | | | - Leonie Simo
- Elizabeth Glaser Pediatric AIDS Foundation, Yaoundé, Cameroon
| | | | | | | | - Daniel Atwine
- Clinical Research Department, Epicentre Mbarara Research Centre, Mbarara, Uganda
| | - Stephen M Graham
- Royal Children's Hospital, University of Melbourne Department of Paediatrics and Murdoch Children's Research Institute, Melbourne, Australia; International Union Against Tuberculosis and Lung Disease, Paris, France
| | - Martina Casenghi
- Department of Innovation and New Technology, Elizabeth Glaser Pediatric AIDS Foundation, Geneva, Switzerland
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3
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Marais BJ, Graham SM. The Value of Chest Radiography in Tuberculosis Preventive Treatment Screening in Children and Adolescents. Am J Respir Crit Care Med 2022; 206:814-816. [PMID: 35653694 PMCID: PMC9799261 DOI: 10.1164/rccm.202205-1023ed] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Affiliation(s)
- Ben J. Marais
- Sydney Institute for Infectious Diseases and the Children’s Hospital WestmeadThe University of SydneySydney, Australia,National Health and Medical Research Council (NHMRC),Centre for Research Excellence in TuberculosisCamperdown, New South Wales, Australia
| | - Stephen M. Graham
- National Health and Medical Research Council (NHMRC),Centre for Research Excellence in TuberculosisCamperdown, New South Wales, Australia,Department of Paediatrics and Murdoch Children’s Research Institute,University of MelbourneMelbourne, Australia,Burnet InstituteMelbourne, Australia
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Farina E, D'Amore C, Lancella L, Boccuzzi E, Ciofi Degli Atti ML, Reale A, Rossi P, Villani A, Raponi M, Raucci U. Alert sign and symptoms for the early diagnosis of pulmonary tuberculosis: analysis of patients followed by a tertiary pediatric hospital. Ital J Pediatr 2022; 48:90. [PMID: 35698090 PMCID: PMC9195307 DOI: 10.1186/s13052-022-01288-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 05/27/2022] [Indexed: 12/03/2022] Open
Abstract
Background Intercepting earlier suspected TB (Tuberculosis) cases clinically is necessary to reduce TB incidence, so we described signs and symptoms of retrospective cases of pulmonary TB and tried to evaluate which could be early warning signs. Methods We conducted a retrospective descriptive study of pulmonary TB cases in children in years 2005–2017; in years 2018–2020 we conducted a cohort prospective study enrolling patients < 18 years accessed to Emergency Department (ED) with signs/symptoms suggestive of pulmonary TB. Results In the retrospective analysis, 226 patients with pulmonary TB were studied. The most frequently described items were contact history (53.5%) and having parents from countries at risk (60.2%). Cough was referred in 49.5% of patients at onset, fever in 46%; these symptoms were persistent (lasting ≥ 10 days) in about 20%. Lymphadenopathy is described in 15.9%. The prospective study enrolled 85 patients of whom 14 (16.5%) were confirmed to be TB patients and 71 (83.5%) were non-TB cases. Lymphadenopathy and contact history were the most correlated variables. Fever and cough lasting ≥ 10 days were less frequently described in TB cases compared to non-TB patients (p < 0.05). Conclusions In low TB endemic countries, pulmonary TB at onset is characterized by different symptoms, i.e. persistent fever and cough are less described, while more relevant are contact history and lymphadenopathy. It was not possible to create a score because signs/symptoms usually suggestive of pulmonary TB (considered in the questionnaire) were not significant risk factors in our reality, a low TB country. Supplementary Information The online version contains supplementary material available at 10.1186/s13052-022-01288-5.
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Affiliation(s)
- Elisa Farina
- Unit of Internal Medicine, Celio Military Hospital, Rome, Italy
| | - Carmen D'Amore
- Clinical Pathways and Epidemiology Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Laura Lancella
- Division of Immunology and Infectious Diseases, Department (DPUO), University-Hospital Pediatric, Bambino Gesù Children's Hospital, IRCSS, Rome, Italy
| | - Elena Boccuzzi
- Department of Emergency and Clinical Pediatrics, Bambino Gesù Children's Hospital IRCCS, Rome, Italy
| | | | - Antonino Reale
- Department of Emergency and Clinical Pediatrics, Bambino Gesù Children's Hospital IRCCS, Rome, Italy
| | - Paolo Rossi
- Medical Direction, Bambino Gesù Children's Hospital, IRCSS, Rome, Italy
| | - Alberto Villani
- Department of Emergency and Clinical Pediatrics, Bambino Gesù Children's Hospital IRCCS, Rome, Italy
| | | | - Umberto Raucci
- Department of Emergency and Clinical Pediatrics, Bambino Gesù Children's Hospital IRCCS, Rome, Italy.
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5
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Kay AW, Sandoval M, Mtetwa G, Mkhabela M, Ndlovu B, Devezin T, Sikhondze W, Vambe D, Sibanda J, Dube GS, Stevens RH, Lukhele B, Mandalakas AM. Vikela Ekhaya: A Novel, Community-based, Tuberculosis Contact Management Program in a High Burden Setting. Clin Infect Dis 2022; 74:1631-1638. [PMID: 34302733 PMCID: PMC9070808 DOI: 10.1093/cid/ciab652] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The prevention of tuberculosis (TB) in child contacts of TB cases and people living with human immunodeficiency virus (HIV) is a public health priority, but global access to TB preventive therapy (TPT) remains low. In 2019, we implemented Vikela Ekhaya, a novel community-based TB contact management program in Eswatini designed to reduce barriers to accessing TPT. METHODS Vikela Ekhaya offered differentiated TB and HIV testing for household contacts of TB cases by using mobile contact management teams to screen contacts, assess their TPT eligibility, and initiate and monitor TPT adherence in participants' homes. RESULTS In total, 945 contacts from 244 households were screened for TB symptoms; 72 (8%) contacts reported TB symptoms, and 5 contacts (0.5%) were diagnosed with prevalent TB. A total of 322 of 330 (98%) eligible asymptomatic household contacts initiated TPT. Of 322 contacts initiating TPT, 248 children initiated 3 months of isoniazid and rifampicin and 74 children and adults living with HIV initiated 6 months of isoniazid; 298 (93%) completed TPT. In clustered logistic regression analyses, unknown HIV status (adjusted odds ratio [aOR] 5.7, P = .023), positive HIV status (aOR 21.1, P = .001), urban setting (aOR 5.6, P = .006), and low income (aOR 5.9, P = .001) predicted loss from the cascade of care among TPT-eligible contacts. CONCLUSION Vikela Ekhaya demonstrated that community-based TB household contact management is a feasible, acceptable, and successful strategy for TB screening and TPT delivery. The results of this study support the development of novel, differentiated, community-based interventions for TB prevention and control.
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Affiliation(s)
- Alexander W Kay
- The Global Tuberculosis Program, Texas Children’s Hospital, Baylor College of Medicine, Houston, Texas, USA
- Baylor College of Medicine Children’s Foundation-Eswatini, Mbabane, Eswatini
| | - Micaela Sandoval
- The Global Tuberculosis Program, Texas Children’s Hospital, Baylor College of Medicine, Houston, Texas, USA
- UTHealth School of Public Health, Houston, Texas, USA
| | - Godwin Mtetwa
- Baylor College of Medicine Children’s Foundation-Eswatini, Mbabane, Eswatini
| | - Musa Mkhabela
- Baylor College of Medicine Children’s Foundation-Eswatini, Mbabane, Eswatini
| | - Banele Ndlovu
- Baylor College of Medicine Children’s Foundation-Eswatini, Mbabane, Eswatini
| | - Tara Devezin
- The Global Tuberculosis Program, Texas Children’s Hospital, Baylor College of Medicine, Houston, Texas, USA
| | - Welile Sikhondze
- Eswatini National Tuberculosis Control Program, Manzini, Eswatini
| | - Debrah Vambe
- Eswatini National Tuberculosis Control Program, Manzini, Eswatini
| | - Joyce Sibanda
- Eswatini National Tuberculosis Control Program, Manzini, Eswatini
| | - Gloria S Dube
- Eswatini National Tuberculosis Control Program, Manzini, Eswatini
| | - Robert H Stevens
- Independent Consultant to StopTB Partnership, Geneva, Switzerland
| | - Bhekumusa Lukhele
- The Global Tuberculosis Program, Texas Children’s Hospital, Baylor College of Medicine, Houston, Texas, USA
- Baylor College of Medicine Children’s Foundation-Eswatini, Mbabane, Eswatini
| | - Anna M Mandalakas
- The Global Tuberculosis Program, Texas Children’s Hospital, Baylor College of Medicine, Houston, Texas, USA
- UTHealth School of Public Health, Houston, Texas, USA
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Gunasekera KS, Vonasek B, Oliwa J, Triasih R, Lancioni C, Graham SM, Seddon JA, Marais BJ. Diagnostic Challenges in Childhood Pulmonary Tuberculosis-Optimizing the Clinical Approach. Pathogens 2022; 11:pathogens11040382. [PMID: 35456057 PMCID: PMC9032883 DOI: 10.3390/pathogens11040382] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 02/08/2022] [Accepted: 03/14/2022] [Indexed: 12/25/2022] Open
Abstract
The management of childhood tuberculosis (TB) is hampered by the low sensitivity and limited accessibility of microbiological testing. Optimizing clinical approaches is therefore critical to close the persistent gaps in TB case detection and prevention necessary to realize the child mortality targets of the End TB Strategy. In this review, we provide practical guidance summarizing the evidence and guidelines describing the use of symptoms and signs in decision making for children being evaluated for either TB preventive treatment (TPT) or TB disease treatment in high-TB incidence settings. Among at-risk children being evaluated for TPT, a symptom screen may be used to differentiate children who require further investigation for TB disease before receiving TPT. For symptomatic children being investigated for TB disease, an algorithmic approach can inform which children should receive TB treatment, even in the absence of imaging or microbiological confirmation. Though clinical approaches have limitations in accuracy, they are readily available and can provide valuable guidance for decision making in resource-limited settings to increase treatment access. We discuss the trade-offs in using them to make TB treatment decisions.
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Affiliation(s)
- Kenneth S. Gunasekera
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT 06510, USA
- Correspondence:
| | - Bryan Vonasek
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI 53726, USA;
| | - Jacquie Oliwa
- Health Services Unit, KEMRI-Wellcome Trust Research Programme, Nairobi P.O. Box 43640-00100, Kenya;
- Department of Paediatrics and Child Health, School of Medicine, University of Nairobi, Nairobi P.O. Box 30197-00100, Kenya
| | - Rina Triasih
- Department of Pediatrics, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada/Dr. Sardjito Hospital, Yogyakarta 55284, Indonesia;
| | - Christina Lancioni
- Department of Pediatrics, School of Medicine, Oregon Health and Science University, Portland, OR 97239, USA;
| | - Stephen M. Graham
- Centre for International Child Health, University of Melbourne and Murdoch Children’s Research Institute, Royal Children’s Hospital, Melbourne, VIC 3052, Australia;
- Burnet Institute, Melbourne, VIC 3004, Australia
| | - James A. Seddon
- Department of Infectious Diseases, Imperial College London, London W2 1PG, UK;
- Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Stellenbosch University, Cape Town 8000, South Africa
| | - Ben J. Marais
- University of Sydney and The Children’s Hospital at Westmead, Sydney, NSW 2145, Australia;
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Symptom-based Screening Versus Chest Radiography for TB Child Contacts: A Systematic Review and Meta-analysis. Pediatr Infect Dis J 2021; 40:1064-1069. [PMID: 34269322 DOI: 10.1097/inf.0000000000003265] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Accessibility to chest radiography remains a major challenge in high burden and low-income countries. The World Health Organization (WHO) guidelines acknowledge that for child contacts under 5 years, a negative symptom-based screening is sufficient to exclude active tuberculosis (TB), but in child contacts older than 5 years, a chest radiograph should be considered. We performed a systematic review and meta-analysis to assess the performance of symptom-based screening compared with chest radiography in household contacts under 15 years in low-income and middle-income countries. METHODS Screening articles published prior 1 October 2020 and data extraction were performed by 2 independent reviewers. The primary outcome was the concordance between symptom screening and chest radiography using the prevalence adjusted bias adjusted kappa coefficient (PABAK) and the proportion of asymptomatic children with negative chest radiography. The analysis was stratified by age group. RESULTS Of 639 identified articles, 10 were included. PABAK varied between 0.09 and 0.97 and between 0.22 and 0.98, in children less than 5 years and 5-14 years, respectively. The pooled proportion of children with both non-TB suggestive symptoms and chest radiography findings was 98.7% (96.9-99.8) in children less than 5 years and 98.1% (93.8-100) in children of age 5-14 years. CONCLUSIONS Despite low concordance between symptom-based screening and chest radiography, most children without TB suggestive symptoms did not have chest radiography findings suggestive of TB. These results suggest that a negative symptom screening is sufficient to rule out active TB, supporting the WHO recommendation to use symptom-based screening alone when chest radiography is not available.
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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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Marais BJ, Verkuijl S, Casenghi M, Triasih R, Hesseling AC, Mandalakas AM, Marcy O, Seddon JA, Graham SM, Amanullah F. Paediatric tuberculosis - new advances to close persistent gaps. Int J Infect Dis 2021; 113 Suppl 1:S63-S67. [PMID: 33716193 DOI: 10.1016/j.ijid.2021.02.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 01/26/2021] [Accepted: 02/01/2021] [Indexed: 11/16/2022] Open
Abstract
Young children are most vulnerable to develop severe forms of tuberculosis (TB) and are over-represented among TB deaths. Almost all children estimated to have died from TB were never diagnosed or offered TB treatment. Improved access to TB preventive treatment (TPT) requires major upscaling of household contact investigation with allocation of adequate resources. Symptom-based screening is often discouraged in adults for fear of generating drug resistance, if TB cases are missed. However, the situation in vulnerable young children is different, as they present minimal risk of drug resistance generation. Further, the perceived need for additional diagnostic evaluation presents a major barrier to TPT access and underlies general reluctance to consider pragmatic decentralised models of care. Widespread roll-out of Xpert MTB/RIF Ultra® represents an opportunity for improved case detection in young children, but attaining full impact will require the use of non-sputum specimens. The new Fujifilm SILVAMP TB LAM® urine assay demonstrated good diagnostic accuracy in HIV-positive and malnourished children, but further validation is required. Given the limited accuracy of all available tests and the excellent tolerance of TB drugs in children, the global community may have to accept some over-treatment if we want to close the persistent case detection gap in young children.
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Affiliation(s)
- Ben J Marais
- The Children's Hospital at Westmead and the Marie Bashir Institute for Infectious Diseases and Biosecurity, University of Sydney, Sydney, Australia.
| | - Sabine Verkuijl
- Global TB Programme, World Health Organisation (WHO), Geneva, Switzerland
| | | | - Rina Triasih
- Department of Paediatrics, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada and Dr. Sardjito Hospital, Yogyakarta, Indonesia
| | - Anneke C Hesseling
- Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Stellenbosch University, South Africa
| | - Anna M Mandalakas
- Global Tuberculosis Program, Department of Pediatrics, Baylor College of Medicine and Texas Children's Hospital, Houston, United States
| | - Olivier Marcy
- University of Bordeaux, Inserm, French National Research Institute for Sustainable Development, UMR 1219, Bordeaux, France
| | - James A Seddon
- Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Stellenbosch University, South Africa; Department of Infectious Diseases, Imperial College London, London, United Kingdom
| | - Stephen M Graham
- Centre for International Child Health, University of Melbourne, Melbourne, Australia; International Union against Tuberculosis and Lung Disease, Paris, France
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10
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Salazar-Austin N, Milovanovic M, West NS, Tladi M, Barnes GL, Variava E, Martinson N, Chaisson RE, Kerrigan D. Post-trial perceptions of a symptom-based TB screening intervention in South Africa: implementation insights and future directions for TB preventive healthcare services. BMC Nurs 2021; 20:29. [PMID: 33557831 PMCID: PMC7869510 DOI: 10.1186/s12912-021-00544-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 01/06/2021] [Indexed: 11/13/2022] Open
Abstract
Background Tuberculosis is a top-10 cause of under-5 mortality, despite policies promoting tuberculosis preventive therapy (TPT). We previously conducted a cluster randomized trial to evaluate the effectiveness of symptom-based versus tuberculin skin-based screening on child TPT uptake. Symptom-based screening did not improve TPT uptake and nearly two-thirds of child contacts were not identified or not linked to care. Here we qualitatively explored healthcare provider perceptions of factors that impacted TPT uptake among child contacts. Methods Sixteen in-depth interviews were conducted with key informants including healthcare providers and administrators who participated in the trial in Matlosana, South Africa. The participants’ experience with symptom-based screening, study implementation strategies, and ongoing challenges with child contact identification and linkage to care were explored. Interviews were systematically coded and thematic content analysis was conducted. Results Participants’ had mixed opinions about symptom-based screening and high acceptability of the study implementation strategies. A key barrier to optimizing child contact screening and evaluation was the supervision and training of community health workers. Conclusions Symptom screening is a simple and effective strategy to evaluate child contacts, but additional pediatric training is needed to provide comfort with decision making. New clinic-based child contact files were highly valued by providers who continued to use them after trial completion. Future interventions to improve child contact management will need to address how to best utilize community health workers in identifying and linking child contacts to care. Trial registration The results presented here were from research related to NCT03074799, retrospectively registered on 9 March 2017. Supplementary Information The online version contains supplementary material available at 10.1186/s12912-021-00544-z.
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Affiliation(s)
- Nicole Salazar-Austin
- Department of Pediatrics, Johns Hopkins University School of Medicine, 200 N. Wolfe Street Room 3147, Baltimore, MD, 21287, USA. .,Center for Tuberculosis Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
| | - Minja Milovanovic
- Perinatal HIV Research Unit (PHRU), University of Witwatersrand, Johannesburg, South Africa
| | - Nora S West
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Molefi Tladi
- Perinatal HIV Research Unit (PHRU), University of Witwatersrand, Johannesburg, South Africa
| | - Grace Link Barnes
- Center for Tuberculosis Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Ebrahim Variava
- Perinatal HIV Research Unit (PHRU), University of Witwatersrand, Johannesburg, South Africa.,Department of Internal Medicine, Klerksdorp/Tshepong Hospital Complex, North West Province Department of Health, Klerksdorp, South Africa and University of the Witwatersrand, Johannesburg, South Africa
| | - Neil Martinson
- Perinatal HIV Research Unit (PHRU), University of Witwatersrand, Johannesburg, South Africa.,Center for Tuberculosis Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Richard E Chaisson
- Center for Tuberculosis Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Deanna Kerrigan
- Department of Prevention and Community Health, George Washington University Milken Institute School of Public Health, Washington, DC, USA
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11
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Salazar-Austin N, Cohn S, Barnes GL, Tladi M, Motlhaoleng K, Swanepoel C, Motala Z, Variava E, Martinson N, Chaisson RE. Improving Tuberculosis Preventive Therapy Uptake: A Cluster-randomized Trial of Symptom-based Versus Tuberculin Skin Test-based Screening of Household Tuberculosis Contacts Less Than 5 Years of Age. Clin Infect Dis 2021; 70:1725-1732. [PMID: 31127284 DOI: 10.1093/cid/ciz436] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 05/23/2019] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Tuberculosis preventive therapy (TPT) is highly effective at preventing tuberculosis disease in household child contacts (<5 years), but is poorly implemented worldwide. In 2006, the World Health Organization recommended symptom-based screening as a replacement for tuberculin skin testing (TST) to simplify contact evaluation and improve implementation. We aimed to determine the effectiveness of this recommendation. METHODS We conducted a pragmatic, cluster-randomized trial to determine whether contact evaluation using symptom screening improved the proportion of identified child contacts who initiated TPT, compared to TST-based screening, in Matlosana, South Africa. We randomized 16 clinics to either symptom-based or TST-based contact evaluations. Outcome data were abstracted from customized child contact management files. RESULTS Contact tracing identified 550 and 467 child contacts in the symptom and TST arms, respectively (0.39 vs 0.32 per case, respectively; P = .27). There was no significant difference by arm in the adjusted proportion of identified child contacts who were screened (52% in symptom arm vs 60% in TST arm; P = .39). The adjusted proportion of identified child contacts who initiated TPT or tuberculosis treatment was 51.5% in the symptom clinics and 57.1% in the TST clinics (difference -5.6%, 95% confidence interval -23.7 to 12.6; P = .52). Based on the district's historic average of 0.7 child contacts per index case, 14% and 15% of child contacts completed 6 months of TPT in the symptom and TST arms, respectively (P = .89). CONCLUSIONS Symptom-based screening did not improve the proportion of identified child contacts evaluated or initiated on TPT, compared to TST-based screening. Further research is needed to identify bottlenecks and evaluate interventions to ensure all child contacts receive TPT. CLINICAL TRIALS REGISTRATION NCT03074799.
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Affiliation(s)
- Nicole Salazar-Austin
- Center for Tuberculosis Research, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Silvia Cohn
- Center for Tuberculosis Research, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Grace Link Barnes
- Center for Tuberculosis Research, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Molefi Tladi
- Perinatal Human Immunodeficiency Virus Research Unit, University of Witwatersrand, Johannesburg
| | - Katlego Motlhaoleng
- Perinatal Human Immunodeficiency Virus Research Unit, University of Witwatersrand, Johannesburg
| | - Catharina Swanepoel
- Matlosana Sub-district Department of Health, Klerksdorp/Tshepong Hospital Complex, North West Province Department of Health, Johannesburg, South Africa
| | - Zarina Motala
- Matlosana Sub-district Department of Health, Klerksdorp/Tshepong Hospital Complex, North West Province Department of Health, Johannesburg, South Africa
| | - Ebrahim Variava
- Perinatal Human Immunodeficiency Virus Research Unit, University of Witwatersrand, Johannesburg.,Department of Internal Medicine, Klerksdorp/Tshepong Hospital Complex, North West Province Department of Health, Johannesburg, South Africa.,University of the Witwatersrand, Johannesburg, South Africa
| | - Neil Martinson
- Center for Tuberculosis Research, Johns Hopkins University School of Medicine, Baltimore, Maryland.,Perinatal Human Immunodeficiency Virus Research Unit, University of Witwatersrand, Johannesburg
| | - Richard E Chaisson
- Center for Tuberculosis Research, Johns Hopkins University School of Medicine, Baltimore, Maryland
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12
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Jo Y, Gomes I, Flack J, Salazar-Austin N, Churchyard G, Chaisson RE, Dowdy DW. Cost-effectiveness of scaling up short course preventive therapy for tuberculosis among children across 12 countries. EClinicalMedicine 2021; 31:100707. [PMID: 33554088 PMCID: PMC7846666 DOI: 10.1016/j.eclinm.2020.100707] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 12/12/2020] [Accepted: 12/18/2020] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND While household contact investigation is widely recommended as a means to reduce the burden of tuberculosis (TB) among children, only 27% of eligible pediatric household contacts globally received preventive treatment in 2018. We assessed the cost-effectiveness of household contact investigation for TB treatment and short-course preventive therapy provision for children under 15 years old across 12 high TB burden countries. METHODS We used decision analysis to compare the costs and estimated effectiveness of three intervention scenarios: (a) status quo (existing levels of coverage with isoniazid preventive therapy), (b) contact investigation with treatment of active TB but no additional preventive therapy, and (c) contact investigation with TB treatment and provision of short-course preventive therapy. Using country-specific demographic, epidemiological and cost data from the literature, we estimated annual costs (in 2018 USD) and the number of TB cases and deaths averted across 12 countries. Incremental cost effectiveness ratios were assessed as cost per death and per disability-adjusted life year [DALY] averted. FINDINGS Our model estimates that contact investigation with treatment of active TB and provision of preventive therapy could be highly cost-effective compared to the status quo (ranging from $100 per DALY averted in Malawi to $1,600 in Brazil; weighted average $383 per DALY averted [uncertainty range: $248 - $1,130]) and preferred to contact investigation without preventive therapy (weighted average $751 per DALY averted [uncertainty range: $250 - $1,306]). Key drivers of cost-effectiveness were TB prevalence, sensitivity of TB diagnosis, case fatality for untreated TB, and cost of household screening. INTERPRETATION Based on this modeling analysis of available published data, household contact investigation with provision of short-course preventive therapy for TB has a value-for-money profile that compares favorably with other interventions. FUNDING Unitaid (2017-20-IMPAACT4TB).
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Affiliation(s)
- Youngji Jo
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
- Corresponding author.
| | - Isabella Gomes
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Joseph Flack
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Nicole Salazar-Austin
- Center for Tuberculosis Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Gavin Churchyard
- The Aurum Institute, Parktown, South Africa
- School of Public Health, University of Witwatersrand, Johannesburg, South Africa
| | - Richard E. Chaisson
- Center for Tuberculosis Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - David W. Dowdy
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
- Center for Tuberculosis Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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13
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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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14
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Contact Screening and Isoniazid Preventive Therapy Initiation for Under-Five Children among Pulmonary Tuberculosis-Positive Patients in Bahir Dar Special Zone, Northwest Ethiopia: A Cross-Sectional Study. Tuberc Res Treat 2020; 2020:6734675. [PMID: 32566291 PMCID: PMC7294357 DOI: 10.1155/2020/6734675] [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: 02/19/2020] [Revised: 05/06/2020] [Accepted: 05/16/2020] [Indexed: 11/26/2022] Open
Abstract
Background Children are highly susceptible to Mycobacterium tuberculosis infection, and about 70% of children living in the same households with pulmonary tuberculosis-positive patients will become infected. However, pulmonary positive tuberculosis is a common phenomenon and the implementation of the recommended contact screening and initiation of isoniazid preventive therapy is very low. Therefore, this study is aimed at assessing contact screening practice and initiation of isoniazid preventive therapy of under-five children among pulmonary tuberculosis-positive patients in Bahir Dar, northwest Ethiopia. Methods A facility-based cross-sectional study was conducted from March 1 to 30, 2016. A total of 267 pulmonary tuberculosis-positive patients were included in this study. To identify independent predictors of contact screening and isoniazid preventive therapy initiation, we performed multivariable logistic regression analyses using SPSS version 20 with CI of 95% at p value < 0.05. Results A total of 230 (90.2%) pulmonary tuberculosis-positive patients had single contacts with their under-five children. One hundred nine (64.8%) children were screened. From those screened, 11 (7.4%) developed tuberculosis disease and started antituberculosis treatment. Forty-four (31.9%) children started isoniazid preventive therapy. Sex of the participants, place of service delivery, relationship with contacts, HIV status, and attitude of PTB+ cases were significant predictors of contact screening (p < .05). Participant's knowledge, attitude of participants, and relationship of the child with participant were significant predictors of isoniazid preventive therapy initiation (p < 0.05). Conclusion Contact screening practice and isoniazid preventive therapy initiation of children under the age of 5 in Bahir Dar zone were very low. Intimate family contact with pulmonary tuberculosis-positive patients, place of service delivery, and attitude towards screening are the key factors of contact screening. Participant's knowledge, attitude of participants, and relationship of the child with participant are the key factors of isoniazid preventive therapy initiation. Therefore, household contact screening and isoniazid preventive therapy initiation should be paid attention to reduce transmission.
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15
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Demanding an end to tuberculosis: treatment of tuberculosis infection among persons living with and without HIV. Curr Opin HIV AIDS 2020; 14:21-27. [PMID: 30407203 DOI: 10.1097/coh.0000000000000517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
PURPOSE OF REVIEW More than two billion people are infected with Mycobacterium tuberculosis and few of them are ever offered therapy in spite of such treatment being associated with reduced rates of morbidity and mortality. This article reviews the current recommendations on the diagnosis and treatment of TB infection (or what is commonly referred to as 'prophylaxis' or 'preventive therapy' of latent TB) and discusses barriers to implementation that have led to low demand for this life-saving therapeutic intervention. RECENT FINDINGS Treatment of infection for both TB and drug-resistant TB is well tolerated and effective, and several new, shorter regimens - including rfiapenitine-based regimens of 1 month and 12 weeks duration - have been shown to be effective. Not all persons infected with TB go on to develop disease and the risk is the highest in the first 2 years after infection. Given this, additional work is needed to better identify those at the highest risk of developing active TB. SUMMARY Practitioners should offer newer, shorter regimens to persons who are infected with TB and at high risk of developing disease, including people living with HIV and household contacts of people living with TB who are age 5 years and under. This includes individuals who have been exposed to drug-resistant forms of disease. Socioeconomic risk factors may play a key role in the development of TB disease and should also be addressed.
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16
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Otero L, Battaglioli T, Ríos J, De la Torre Z, Trocones N, Ordoñez C, Seas C, Van der Stuyft P. Contact evaluation and isoniazid preventive therapy among close and household contacts of tuberculosis patients in Lima, Peru: an analysis of routine data. Trop Med Int Health 2019; 25:346-356. [PMID: 31758837 DOI: 10.1111/tmi.13350] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
OBJECTIVE Contacts of pulmonary tuberculosis (TB) cases are at high risk of TB infection and progression to disease. Close and household contacts and those <5 years old have the highest risk. Isoniazid preventive therapy (IPT) can largely prevent TB disease among infected individuals. International and Peruvian recommendations include TB contact investigation and IPT prescription to eligible contacts. We conducted a study in Lima, Peru, to determine the number of close and household contacts who were evaluated, started on IPT, and who completed it, and the factors associated to compliance with national guidelines. METHODS We conducted a longitudinal retrospective study including all TB cases diagnosed between January 2015 and July 2016 in 13 health facilities in south Lima. Treatment cards, TB registers and clinical files were reviewed and data on index cases (sex, age, smear status, TB treatment outcome), contact investigation (sex, age, kinship to the index case, evaluations at month 0, 2 and 6) and health facility (number of TB cases notified per year, proportion of TB cases with treatment success) were extracted. We tabulated frequencies of contact evaluation by contact and index case characteristics. To investigate determinants of IPT initiation and completion, we used generalised linear mixed models. RESULTS A total of 2323 contacts were reported by 662 index cases; the median number of contacts per case was four (IQR, 2-5). Evaluation at month 0 was completed by 99.2% (255/257) of contacts <5 and 98.1% (558/569) of contacts aged 5-19 years. Of 191 eligible contacts <5 years old, 70.2% (134) started IPT and 31.4% (42) completed it. Of 395 contacts 5-19 years old, 36.7% (145) started IPT and 32.4% (47) completed it. Factors associated to not starting IPT among contacts <5 years old were being a second-degree relative to the index case (OR 6.6 95CI% 2.6-16.5), not having received a tuberculin skin test (TST) (OR 3.9 95%CI 1.4-10.8), being contact of a smear-negative index case (OR 5.5 95%CI 2.0-15.1) and attending a low-caseload health facility (OR 2.8 95%CI 1.3-6.2). Factors associated to not starting IPT among 5-19 year-olds were age (OR 13.7 95%CI 5.9-32.0 for 16-19 vs. 5-7 years old), being a second-degree relative (OR 3.0 95%CI 1.6-5.6), not having received a TST (OR 5.4, 95%CI 2.5-11.8), being contact of a male index case (OR 2.1 95CI% 1.2-3.5), with smear-negative TB (OR 1.9 95%CI 1.0-3.6), and attending a high-caseload health facility (OR 2.1 95%CI 1.2-3.6). Factors associated to not completing IPT, among contacts who started, were not having received a TST (OR 3.4 95%CI 1.5-7.9 for <5 year-olds, and OR 4.3 95%CI 1.7-10.8 for those 5-19 years old), being contact of an index case with TB treatment outcome other than success (OR 9.3 95%CI 2.6-33.8 for <5 year-olds and OR 15.3 95%CI 1.9-125.8 for those 5-19 years old), and, only for those 5-19 years old, attending a health facility with high caseload (OR 3.2 95%CI 1.4-7.7) and a health facility with low proportion of TB cases with treatment success (OR 4.4 95%CI 1.9-10.2). CONCLUSIONS We found partial compliance to TB contact investigation, and identified contact, index case and health facility-related factors associated to IPT start and completion that can guide the TB programme in increasing coverage and quality of this fundamental activity.
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Affiliation(s)
- Larissa Otero
- Facultad de Medicina, Universidad Peruana Cayetano Heredia, Lima, Peru.,Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Tullia Battaglioli
- Unit of General Epidemiology and Disease Control, Department of Public Health, Institute of Tropical Medicine, Antwerp, Belgium
| | - Julia Ríos
- Dirección de Prevención y Control de la Tuberculosis, Ministry of Health, Lima, Peru
| | - Zayda De la Torre
- Dirección de Salud San Juan de Miraflores Villa María del Triunfo, Ministry of Health, Lima, Peru
| | - Nayda Trocones
- Dirección de Salud San Juan de Miraflores Villa María del Triunfo, Ministry of Health, Lima, Peru
| | - Cielo Ordoñez
- Dirección de Salud San Juan de Miraflores Villa María del Triunfo, Ministry of Health, Lima, Peru
| | - Carlos Seas
- Facultad de Medicina, Universidad Peruana Cayetano Heredia, Lima, Peru.,Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Patrick Van der Stuyft
- Department of Public Health and Primary Care, Faculty of Medicine, Ghent University, Ghent, Belgium
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18
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Honjepari A, Madiowi S, Madjus S, Burkot C, Islam S, Chan G, Majumdar SS, Graham SM. Implementation of screening and management of household contacts of tuberculosis cases in Daru, Papua New Guinea. Public Health Action 2019; 9:S25-S31. [PMID: 31579646 PMCID: PMC6735459 DOI: 10.5588/pha.18.0072] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 02/25/2019] [Indexed: 11/10/2022] Open
Abstract
SETTING Daru Island, Western Province, Papua New Guinea (PNG). OBJECTIVE To describe the implementation of a screening programme for household contacts of tuberculosis (TB) cases residing on Daru Island. DESIGN This was a retrospective descriptive study evaluating two periods of implementation: introduction and expansion of a screening programme for household contacts of drug-resistant TB (DR-TB) cases (March 2016 to September 2017), and inclusion of drug-susceptible TB (DS-TB) cases with provision of preventive therapy for eligible contacts between October 2017 and March 2018. RESULTS In the first period, the contact screening programme was established and strengthened by increasing coverage over time. There was a large number of contacts (median 8) in each household, and a high uptake of screening. In the second period of evaluation, respectively 412 and 223 contacts of 42 DS-TB and 25 DR-TB index cases were screened. Overall, 156 (24.6%) contacts reported TB-related symptoms and 9 (1.4%) were diagnosed with active TB. All 9 commenced TB treatment: 5 had DS-TB and 4 had DR-TB. Of 82 child contacts of DS-TB cases eligible for preventive therapy, 57 (69.5%) commenced treatment and 45 completed treatment. CONCLUSION Community-based household contact screening and management was successfully implemented under programme conditions in this high burden TB and DR-TB setting in PNG.
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Affiliation(s)
- A Honjepari
- Western Provincial Health Office, Daru, Western Province, Papua New Guinea (PNG)
| | - S Madiowi
- Western Provincial Health Office, Daru, Western Province, Papua New Guinea (PNG)
| | - S Madjus
- World Vision PNG, Daru, Western Province, PNG
| | - C Burkot
- Burnet Institute, Melbourne, Victoria, Australia
| | - S Islam
- Burnet Institute, Melbourne, Victoria, Australia
| | - G Chan
- Burnet Institute, Melbourne, Victoria, Australia
| | - S S Majumdar
- Burnet Institute, Melbourne, Victoria, Australia
| | - S M Graham
- Burnet Institute, Melbourne, Victoria, Australia
- Centre for International Child Health, University of Melbourne, Melbourne, Victoria, Australia
- International Union Against Tuberculosis and Lung Disease, Paris, France
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Zawedde-Muyanja S, Nakanwagi A, Dongo JP, Sekadde MP, Nyinoburyo R, Ssentongo G, Detjen AK, Mugabe F, Nakawesi J, Karamagi Y, Amuge P, Kekitiinwa A, Graham SM. Decentralisation of child tuberculosis services increases case finding and uptake of preventive therapy in Uganda. Int J Tuberc Lung Dis 2019; 22:1314-1321. [PMID: 30355411 DOI: 10.5588/ijtld.18.0025] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND A lack of capacity to diagnose tuberculosis (TB) in children at peripheral health facilities and limited contact screening and management contribute to low case finding in TB-endemic settings. OBJECTIVE To evaluate the implementation of a pilot project that strengthened diagnosis, treatment and prevention of child TB at peripheral health facilities in Uganda. METHODS In June 2015, health care workers at peripheral health facilities were trained to diagnose and treat child TB. Community health care workers were trained to screen household TB contacts. Before-and-after analysis as well as comparisons with non-intervention districts were used to evaluate impact on caseload and treatment outcomes. RESULTS By December 2016, the average number of children (age < 15 years) diagnosed with TB increased from 45 to 108 per quarter. The proportion of child TB among all TB cases increased from 8.8% to 15%, and the proportion completing treatment increased from 65% to 82%. Of 2270 child TB contacts screened, 55 (2.4%) were diagnosed with TB. Of 910 eligible child contacts, 670 (74%) started preventive therapy, 569 (85%) of whom completed therapy. CONCLUSION The strengthening of child TB services at peripheral health facilities in Uganda was associated with increased case finding, improved treatment outcomes and the successful implementation of contact screening and management.
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Affiliation(s)
- S Zawedde-Muyanja
- International Union Against Tuberculosis and Lung Disease, Paris, France;, The Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala
| | - A Nakanwagi
- International Union Against Tuberculosis and Lung Disease, Paris, France
| | - J P Dongo
- International Union Against Tuberculosis and Lung Disease, Paris, France
| | - M P Sekadde
- The National Tuberculosis and Leprosy Programme, Ministry of Health, Kampala, Baylor College of Children's Medical Foundation, Kampala
| | | | - G Ssentongo
- Baylor College of Children's Medical Foundation, Kampala
| | - A K Detjen
- International Union Against Tuberculosis and Lung Disease, Paris, France;, United Nations Children's Fund, New York, USA
| | - F Mugabe
- The National Tuberculosis and Leprosy Programme, Ministry of Health, Kampala
| | | | | | - P Amuge
- Baylor College of Children's Medical Foundation, Kampala
| | - A Kekitiinwa
- Baylor College of Children's Medical Foundation, Kampala
| | - S M Graham
- International Union Against Tuberculosis and Lung Disease, Paris, France;, Centre for International Child Health, University of Melbourne Department of Paediatrics and Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, Victoria, Australia
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Reuter A, Hughes J, Furin J. Challenges and controversies in childhood tuberculosis. Lancet 2019; 394:967-978. [PMID: 31526740 DOI: 10.1016/s0140-6736(19)32045-8] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 07/29/2019] [Accepted: 08/06/2019] [Indexed: 01/03/2023]
Abstract
Children bear a substantial burden of suffering when it comes to tuberculosis. Ironically, they are often left out of the scientific and public health advances that have led to important improvements in tuberculosis diagnosis, treatment, and prevention over the past decade. This Series paper describes some of the challenges and controversies in paediatric tuberculosis, including the epidemiology and treatment of tuberculosis in children. Two areas in which substantial challenges and controversies exist (ie, diagnosis and prevention) are explored in more detail. This Series paper also offers possible solutions for including children in all efforts to end tuberculosis, with a focus on ensuring that the proper financial and human resources are in place to best serve children exposed to, infected with, and sick from all forms of tuberculosis.
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Affiliation(s)
- Anja Reuter
- Médecins Sans Frontières, Khayelitsha, South Africa
| | - Jennifer Hughes
- Desmond Tutu Tuberculosis Center, Stellenbosch University, Stellenbosch, South Africa
| | - Jennifer Furin
- Department of Global Health and Social Medicine, Harvard Medical School, Boston, MA, USA.
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Dundar C, Oztomurcuk D, Terzi O. Regional success on screening and chemoprophylaxis in contacts of patients with pulmonary tuberculosis in Turkey: a dispensary experience in 2016–2017. Trans R Soc Trop Med Hyg 2019; 113:351-355. [DOI: 10.1093/trstmh/trz008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 01/21/2019] [Accepted: 02/07/2019] [Indexed: 11/14/2022] Open
Affiliation(s)
- Cihad Dundar
- Department of Public Health, Faculty of Medicine, Ondokuz Mayis University, Atakum/Samsun, Turkey
| | - Derya Oztomurcuk
- Samsun Tuberculosis Dispensary of Health Directorate, Samsun, Turkey
| | - Ozlem Terzi
- Department of Public Health, Faculty of Medicine, Ondokuz Mayis University, Atakum/Samsun, Turkey
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Lestari T, Graham S, van den Boogard C, Triasih R, Poespoprodjo JR, Ubra RR, Kenangalem E, Mahendradhata Y, Anstey NM, Bailie RS, Ralph AP. Bridging the knowledge-practice gap in tuberculosis contact management in a high-burden setting: a mixed-methods protocol for a multicenter health system strengthening study. Implement Sci 2019; 14:31. [PMID: 30890160 PMCID: PMC6425655 DOI: 10.1186/s13012-019-0870-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 02/12/2019] [Indexed: 01/12/2023] Open
Abstract
Background People in close contact with tuberculosis should have screening and appropriate management, as an opportunity for active case detection and prevention. However, implementation of tuberculosis contact screening and management is limited in high-burden settings. Behaviour change is needed across three levels of the healthcare system—policymakers, healthcare providers, and patients. To bridge the wide policy-practice gap, this study draws on the Consolidated Framework for Implementation Research, the Behaviour Change Wheel, and the RE-AIM model (Reach, Effectiveness, Adoption, Implementation, Maintenance) to respectively understand barriers, implement change, and evaluate process and outcome. Methods This methods paper describes a mixed-methods intervention study in Eastern Indonesia. Quantitative data will be collected during baseline, intervention, and sustainability periods and analyzed using time series analysis. The primary outcome is the number of individuals completing tuberculosis preventive therapy by the end of the two-year intervention phase. Of an estimated 10,000 contacts during this period, we anticipate that a minimum of 416 will be found to have active TB or will complete preventive therapy. Qualitative data (semi-structured interviews, focus group discussions, and observations) will be collected from consenting healthcare providers, patients, and contacts. Activities to promote policy implementation include healthcare provider training, quarterly continuous quality improvement workshops, a social media discussion forum, and promotional materials. The Consolidated Framework for Implementation Research will be used to identify reasons for limited policy implementation at baseline. The Behaviour Change Wheel will be used to ensure that a suitable range of activities are implemented to facilitate change. The RE-AIM model will be used as the evaluation framework. Discussion Use of theoretical frameworks in combination can ensure a comprehensive understanding of, and robust response to, health policy underimplementation. The selected frameworks are highly applicable to this pragmatic intervention study, in a setting where End TB Strategy targets will not be met without substantial behavior change within health systems. Continuous quality improvement cycles will provide a way to engage staff and stakeholders in understanding local data to motivate behavior change. If successful, up to 500 people could be prevented from developing complications of tuberculosis through early case-finding or receiving preventive therapy over a two-year period. Study registration Australian New Zealand Clinical Trials Register 375803.
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Affiliation(s)
- Trisasi Lestari
- Global and Tropical Health, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia. .,Center for Tropical Medicine, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia.
| | - Steve Graham
- Centre for International Child Health, Department of Paediatrics and Murdoch Children's Research Institute, University of Melbourne, Melbourne, Australia.,Burnet Institute, Melbourne, Australia
| | - Christel van den Boogard
- Global and Tropical Health, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia
| | - Rina Triasih
- Center for Tropical Medicine, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Jeanne Rini Poespoprodjo
- Center for Tropical Medicine, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia.,Papuan Health and Community Development Foundation, Papua, Indonesia
| | | | - Enny Kenangalem
- Papuan Health and Community Development Foundation, Papua, Indonesia
| | - Yodi Mahendradhata
- Center for Tropical Medicine, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Nicholas M Anstey
- Global and Tropical Health, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia.,Division of Medicine, Royal Darwin Hospital, Darwin, Northern Territory, Australia
| | - Ross S Bailie
- University Centre for Rural Health, School of Medicine, University of Sydney, Lismore, Australia
| | - Anna P Ralph
- Global and Tropical Health, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia.,Division of Medicine, Royal Darwin Hospital, Darwin, Northern Territory, Australia
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Zellweger JP, Sousa P, Heyckendorf J. Clinical diagnosis of tuberculosis. Tuberculosis (Edinb) 2018. [DOI: 10.1183/2312508x.10021017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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TB Presenting as Recurrent Pneumonia in a HIV-Infected Infant in Central Viet Nam. REPORTS 2018. [DOI: 10.3390/reports1020012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We report on a six-month-old infant admitted to our intensive care unit (ICU) with recurrent severe pneumonia. The mother was infected with human immunodeficiency virus (HIV)-infected, but initially failed to disclose this to doctors. Neither did she report the grandmother of the child’s chronic coughing, likely due to tuberculosis (TB). The infant was diagnosed with X-pert MTB/RIF® confirmed TB and tested positive for HIV infection. Once a correct diagnosis was established, the child demonstrated good recovery with appropriate TB and antiretroviral treatment (ART). The case demonstrates the importance of including TB in the differential diagnosis for young children not responding to first-line pneumonia treatment, especially in TB endemic areas. Taking a meticulous TB and HIV exposure history, with careful consideration of potential social stigma, is essential. It also demonstrates how the inaccessibility of HIV results and the absence of a continuous patient record may jeopardize patient care.
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Birungi FM, van Wyk B, Uwimana J, Ntaganira J, Graham SM. Xpert MTB/RIF assay did not improve diagnosis of pulmonary tuberculosis among child contacts in Rwanda. Pan Afr Med J 2018; 30:39. [PMID: 30167066 PMCID: PMC6110558 DOI: 10.11604/pamj.2018.30.39.12600] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Accepted: 04/19/2018] [Indexed: 11/11/2022] Open
Abstract
Introduction To report on the diagnostic yield using the Xpert MTB/RIF assay on gastric lavage samples from children (<15 years) who were household contacts of tuberculosis (TB) cases in Kigali, Rwanda. Methods A cross-sectional study was conducted among 216 child contacts of index cases with sputum smear-positive TB over a 7 month period, from 1st August 2015 to 29th February 2016. Child contacts with tuberculosis-related symptoms or abnormal chest X-ray had sputum collected by gastric lavage on two consecutive days and samples were examined by smear microscopy, Xpert MTB/RIF assay and solid culture. Results Of the 216 child contacts, 94 (44%) were less than 5 years of age. Most of them 84 (89%) were receiving isoniazid preventive therapy at the time of screening. Thirty seven out of 216 children had TB-related symptoms. Only 4 (10.8%) were clinically diagnosed with TB; and none had bacteriologically confirmed tuberculosis. Conclusion The use of Xpert MTB/RIF assay did not contribute to bacteriological confirmation of active TB in child contacts in this study. The low prevalence of tuberculosis in child contacts in this study may reflect the high coverage of preventive therapy in young (<5 years) child contacts. The low sensitivity of Xpert MTB/RIF assay in contacts may also suggest likely reflection of paucibacillary disease.
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Affiliation(s)
- Francine Mwayuma Birungi
- Department of Epidemiology and Biostatistics, School of Public Health of the College of Medicine and Health Sciences, University of Rwanda, Kigali, Rwanda.,Faculty of Community and Health Sciences, University of Western Cape, Cape Town, South Africa
| | - Brian van Wyk
- Faculty of Community and Health Sciences, University of Western Cape, Cape Town, South Africa
| | - Jeannine Uwimana
- Department of Epidemiology and Biostatistics, School of Public Health of the College of Medicine and Health Sciences, University of Rwanda, Kigali, Rwanda.,Faculty of Community and Health Sciences, University of Western Cape, Cape Town, South Africa
| | - Joseph Ntaganira
- Department of Epidemiology and Biostatistics, School of Public Health of the College of Medicine and Health Sciences, University of Rwanda, Kigali, Rwanda
| | - Stephen Michael Graham
- Centre for International Child Health, University of Melbourne Department of Paediatrics and Murdoch Children's, Research Institute, Royal Children's Hospital, Melbourne, Australia.,International Union Against Tuberculosis and Lung Disease, Paris, France
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Martinez L, Shen Y, Handel A, Chakraburty S, Stein CM, Malone LL, Boom WH, Quinn FD, Joloba ML, Whalen CC, Zalwango S. Effectiveness of WHO's pragmatic screening algorithm for child contacts of tuberculosis cases in resource-constrained settings: a prospective cohort study in Uganda. THE LANCET RESPIRATORY MEDICINE 2017; 6:276-286. [PMID: 29273539 DOI: 10.1016/s2213-2600(17)30497-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 11/01/2017] [Accepted: 11/02/2017] [Indexed: 12/28/2022]
Abstract
BACKGROUND Tuberculosis is a leading cause of global childhood mortality; however, interventions to detect undiagnosed tuberculosis in children are underused. Child contact tracing has been widely recommended but poorly implemented in resource-constrained settings. WHO has proposed a pragmatic screening approach for managing child contacts. We assessed the effectiveness of this screening approach and alternative symptom-based algorithms in identifying secondary tuberculosis in a prospectively followed cohort of Ugandan child contacts. METHODS We identified index patients aged at least 18 years with microbiologically confirmed pulmonary tuberculosis at Old Mulago Hospital (Kampala, Uganda) between Oct 1, 1995, and Dec 31, 2008. Households of index patients were visited by fieldworkers within 2 weeks of diagnosis. Coprevalent and incident tuberculosis were assessed in household contacts through clinical, radiographical, and microbiological examinations for 2 years. Disease rates were compared among children younger than 16 years with and without symptoms included in the WHO pragmatic guideline (presence of haemoptysis, fever, chronic cough, weight loss, night sweats, and poor appetite). Symptoms could be of any duration, except cough (>21 days) and fever (>14 days). A modified WHO decision-tree designed to detect high-risk asymptomatic child contacts was also assessed, in which all asymptomatic contacts were classified as high risk (children younger than 3 years or immunocompromised [HIV-infected]) or low risk (aged 3 years or older and immunocompetent [HIV-negative]). We also assessed a more restrictive algorithm (ie, assessing only children with presence of chronic cough and one other tuberculosis-related symptom). FINDINGS Of 1718 household child contacts, 126 (7%) had coprevalent tuberculosis and 24 (1%) developed incident tuberculosis, diagnosed over the 2-year study period. Of these 150 cases of tuberculosis, 95 (63%) were microbiologically confirmed with a positive sputum culture. Using the WHO approach, 364 (21%) of 1718 child contacts had at least one tuberculosis-related symptom and 85 (23%) were identified as having coprevalent tuberculosis, 67% of all coprevalent cases detected (diagnostic odds ratio 9·8, 95% CI 6·8-14·5; p<0·0001). 1354 (79%) of 1718 child contacts had no symptoms, of whom 41 (3%) had coprevalent tuberculosis. The WHO approach was effective in contacts younger than 5 years: 70 (33%) of 211 symptomatic contacts had coprevalent disease compared with 23 (6%) of 367 asymptomatic contacts (p<0·0001). This approach was also effective in contacts aged 5 years and older: 15 (10%) of 153 symptomatic contacts had coprevalent disease compared with 18 (2%) of 987 asymptomatic contacts (p<0·0001). More coprevalent disease was detected in child contacts recommended for screening when the study population was restricted by HIV-serostatus (11 [48%] of 23 symptomatic HIV-seropositive child contacts vs two [7%] of 31 asymptomatic HIV-seropositive child contacts) or to only culture-confirmed cases (47 [13%] culture confirmed cases of 364 symptomatic child contacts vs 29 [2%] culture confirmed cases of 1354 asymptomatic child contacts). In the modified algorithm, high-risk asymptomatic child contacts were at increased risk for coprevalent disease versus low-risk asymptomatic contacts (14 [6%] of 224 vs 27 [2%] of 1130; p=0·0021). The presence of tuberculosis infection did not predict incident disease in either symptomatic or asymptomatic child contacts: in symptomatic contacts, eight (5%) of 169 infected contacts and six (5%) of 111 uninfected contacts developed incident tuberculosis (p=0·80). Among asymptomatic contacts, incident tuberculosis occurred in six (<1%) of 795 contacts infected at baseline versus four (<1%) of 518 contacts uninfected at baseline, respectively (p=1·00). INTERPRETATION WHO's pragmatic, symptom-based algorithm was an effective case-finding tool, especially in children younger than 5 years. A modified decision-tree identified 6% of asymptomatic child contacts at high risk for subclinical disease. Increasing the feasibility of child-contact tracing using these approaches should be encouraged to decrease tuberculosis-related paediatric mortality in high-burden settings, but this should be partnered with increasing access to microbiological point-of-care testing. FUNDING National Institutes of Health, Tuberculosis Research Unit, AIDS International Training and Research Program of the Fogarty International Center, and the Center for AIDS Research.
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Affiliation(s)
- Leonardo Martinez
- Department of Epidemiology and Biostatistics, College of Public Health, University of Georgia, Athens, GA, USA; Institute of Global Health, University of Georgia, Athens, GA, USA; Division of Infectious Diseases and Geographic Medicine, School of Medicine, Stanford University, Stanford, CA, USA.
| | - Ye Shen
- Department of Epidemiology and Biostatistics, College of Public Health, University of Georgia, Athens, GA, USA
| | - Andreas Handel
- Department of Epidemiology and Biostatistics, College of Public Health, University of Georgia, Athens, GA, USA
| | | | - Catherine M Stein
- Department of Population and Quantitative Health Sciences, Tuberculosis Research Unit & Department of Medicine, Case Western Reserve University, Cleveland, OH, USA; Uganda-CWRU Research Collaboration, Makerere University and Mulago Hospital, Kampala, Uganda
| | - LaShaunda L Malone
- Division of Infectious Disease, Department of Medicine and Tuberculosis Research Unit, Case Western Reserve University, Cleveland, OH, USA; Uganda-CWRU Research Collaboration, Makerere University and Mulago Hospital, Kampala, Uganda
| | - W Henry Boom
- Division of Infectious Disease, Department of Medicine and Tuberculosis Research Unit, Case Western Reserve University, Cleveland, OH, USA; Uganda-CWRU Research Collaboration, Makerere University and Mulago Hospital, Kampala, Uganda
| | - Frederick D Quinn
- University of Georgia, Department of Veterinary Medicine, Athens, GA, USA
| | - Moses L Joloba
- Department of Immunology/Molecular Biology and Department of Medical Microbiology, School of Biomedical Sciences, Makerere University College of Health Sciences, Kampala, Uganda
| | - Christopher C Whalen
- Department of Epidemiology and Biostatistics, College of Public Health, University of Georgia, Athens, GA, USA; Institute of Global Health, University of Georgia, Athens, GA, USA
| | - Sarah Zalwango
- Uganda-CWRU Research Collaboration, Makerere University and Mulago Hospital, Kampala, Uganda
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Marais BJ. Symptom-based screening of children with household tuberculosis contact. THE LANCET RESPIRATORY MEDICINE 2017; 6:235-237. [PMID: 29273537 DOI: 10.1016/s2213-2600(17)30496-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 11/14/2017] [Indexed: 11/20/2022]
Affiliation(s)
- Ben J Marais
- The Children's Hospital at Westmead, Centre for Research Excellence in Tuberculosis and the Marie Bashir Institute for Infectious Diseases and Biosecurity, University of Sydney, NSW, 2145, Australia.
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X-pert MTB/RIF ® Diagnosis of Twin Infants with Tuberculosis in Da Nang, Viet Nam. J Clin Med 2017; 6:jcm6100096. [PMID: 29039758 PMCID: PMC5664011 DOI: 10.3390/jcm6100096] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 10/06/2017] [Accepted: 10/11/2017] [Indexed: 11/16/2022] Open
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Singh AR, Kharate A, Bhat P, Kokane AM, Bali S, Sahu S, Verma M, Nagar M, Kumar AMV. Isoniazid Preventive Therapy among Children Living with Tuberculosis Patients: Is It Working? A Mixed-Method Study from Bhopal, India. J Trop Pediatr 2017; 63:274-285. [PMID: 28082666 PMCID: PMC5914486 DOI: 10.1093/tropej/fmw086] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE We assessed uptake of isoniazid preventive therapy (IPT) among child contacts of smear-positive tuberculosis (TB) patients and its implementation challenges from healthcare providers' and parents' perspectives in Bhopal, India. METHODS A mixed-method study design: quantitative phase (review of programme records and house-to-house survey of smear-positive TB patients) followed by qualitative phase (interviews of healthcare providers and parents). RESULTS Of 59 child contacts (<6 years) of 129 index patients, 51 were contacted. Among them, 19 of 51 (37%) were screened for TB and one had TB. Only 11 of 50 (22%) children were started and 10 of 50 (20%) completed IPT. Content analysis of interviews revealed lack of awareness, risk perception among parents, cumbersome screening process, isoniazid stock-outs, inadequate knowledge among healthcare providers and poor programmatic monitoring as main barriers to IPT implementation. CONCLUSION National TB programme should counsel parents, train healthcare providers, simplify screening procedures, ensure regular drug supply and introduce an indicator to strengthen monitoring and uptake of IPT.
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Affiliation(s)
- Akash Ranjan Singh
- Department of Community and Family Medicine, All India Institute of Medical Sciences, Bhopal, India,Correspondence: Akash Ranjan Singh, Department of Community and Family Medicine, All India Institute of Medical Sciences, Bhopal, Madhya Pradesh 462020, India. Tel: +917898594977. E-mail: <>
| | | | - Prashant Bhat
- Department of Health and Family Welfare, Government of Karnataka, Udupi, India
| | - Arun M Kokane
- Department of Community and Family Medicine, All India Institute of Medical Sciences, Bhopal, India
| | - Surya Bali
- Department of Community and Family Medicine, All India Institute of Medical Sciences, Bhopal, India
| | - Swaroop Sahu
- Department of Preventive and Social Medicine, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
| | | | - Mukesh Nagar
- Department of Community and Family Medicine, All India Institute of Medical Sciences, Bhopal, India
| | - Ajay MV Kumar
- International Union Against Tuberculosis and Lung Disease (The Union), South-East Asia Office, New Delhi, India,International Union Against Tuberculosis and Lung Disease, Paris, France
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Szkwarko D, Hirsch-Moverman Y, Du Plessis L, Du Preez K, Carr C, Mandalakas AM. Child contact management in high tuberculosis burden countries: A mixed-methods systematic review. PLoS One 2017; 12:e0182185. [PMID: 28763500 PMCID: PMC5538653 DOI: 10.1371/journal.pone.0182185] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 07/13/2017] [Indexed: 12/02/2022] Open
Abstract
Tuberculosis (TB) remains a leading cause of morbidity and mortality worldwide. Considering the World Health Organization recommendation to implement child contact management (CCM) for TB, we conducted a mixed-methods systematic review to summarize CCM implementation, challenges, predictors, and recommendations. We searched the electronic databases of PubMed/MEDLINE, Scopus, and Web of Science for studies published between 1996–2017 that reported CCM data from high TB-burden countries. Protocol details for this systematic review were registered on PROSPERO: International prospective register of systematic reviews (#CRD42016038105). We formulated a search strategy to identify all available studies, published in English that specifically targeted a) population: child contacts (<15 years) exposed to TB in the household from programmatic settings in high burden countries (HBCs), b) interventions: CCM strategies implemented within the CCM cascade, c) comparisons: CCM strategies studied and compared in HBCs, and d) outcomes: monitoring and evaluation of CCM outcomes reported in the literature for each CCM cascade step. We included any quantitative, qualitative, mixed-methods study design except for randomized-controlled trials, editorials or commentaries. Thirty-seven studies were reviewed. Child contact losses varied greatly for screening, isoniazid preventive therapy initiation, and completion. CCM challenges included: infrastructure, knowledge, attitudes, stigma, access, competing priorities, and treatment. CCM recommendations included: health system strengthening, health education, and improved preventive therapy. Identified predictors included: index case and clinic characteristics, perceptions of barriers and risk, costs, and treatment characteristics. CCM lacks standardization resulting in common challenges and losses throughout the CCM cascade. Prioritization of a CCM-friendly healthcare environment with improved CCM processes and tools; health education; and active, evidence-based strategies can decrease barriers. A focused approach toward every aspect of the CCM cascade will likely diminish losses throughout the CCM cascade and ultimately decrease TB related morbidity and mortality in children.
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Affiliation(s)
- Daria Szkwarko
- Department of Family Medicine and Community Health, The University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
- Department of Family Medicine, Alpert Medical School of Brown University, Providence, Rhode Island, United States of America
- * E-mail:
| | - Yael Hirsch-Moverman
- ICAP at Columbia University, Mailman School of Public Health, New York, New York, United States of America
- Department of Epidemiology, Columbia University, New York, New York, United States of America
| | - Lienki Du Plessis
- Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
| | - Karen Du Preez
- Desmond Tutu TB Centre, Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
| | - Catherine Carr
- Lamar Soutter Library, The University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Anna M. Mandalakas
- Global TB Program, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States of America
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Abstract
Robert Heinrich Herman Koch, a German physician and microbiologist, received Nobel Prize in 1905 for identifying the specific causative agent of tuberculosis (TB). During his time it was believed that TB was an inherited disease. However he was convinced that the disease was caused by a bacterium and was infectious, tested his postulates using guinea pigs, and found the causative agent to be slow growing mycobacterium tuberculosis. TB is the second most common cause of death from infectious diseases after HIV/AIDS. Drug-resistant TB poses serious challenge to effective management of TB worldwide. Multidrug-resistant TB accounted for about half a million new cases and over 200,000 deaths in 2013. Whole-genome sequencing (first done in 1998) technologies have provided new insight into the mechanism of drug resistance. For the first time in 50 y, new anti TB drugs have been developed. The World Health Organization (WHO) has recently revised their treatment guidelines based on 32 studies. In United States, latent TB affects between 10 and 15 million people, 10% of whom may develop active TB disease. QuantiFERON TB Gold and T-SPOT.TB test are used for diagnosis. Further research will look into the importance of newly discovered gene mutations in causing drug resistance.
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Marais BJ. Improving access to tuberculosis preventive therapy and treatment for children. Int J Infect Dis 2016; 56:122-125. [PMID: 27993688 DOI: 10.1016/j.ijid.2016.12.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 12/07/2016] [Accepted: 12/07/2016] [Indexed: 11/25/2022] Open
Abstract
Children suffer a huge burden of disease in tuberculosis (TB) endemic countries. This disease burden was largely invisible when TB control programmes focused exclusively on adults with sputum smear-positive disease. High-level advocacy and better data have improved visibility, but the establishment of functional paediatric TB programmes remains challenging. The key issues that limit children's access to TB preventive therapy and treatment in endemic areas are briefly discussed. Barriers to preventive therapy include (1) the perceived inability to rule out active disease, (2) fear of creating drug resistance, (3) non-implementation of existing guidelines in the absence of adequate monitoring, and (4) poor adherence with long preventive therapy courses. Barriers to TB treatment include (1) perceived diagnostic difficulties, (2) non-availability of chest radiography, (3) young children presenting to unprepared maternal and child health (MCH) services, and (4) the absence of child-friendly formulations. With drug-resistant disease there is currently no guidance on the use of preventive therapy and treatment is usually restricted to cases with bacteriologically confirmed disease, which excludes most young children from care, even if their likely source case has documented drug-resistant TB.
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Affiliation(s)
- Ben J Marais
- The Children's Hospital at Westmead and the Marie Bashir Institute for Infectious Diseases and Biosecurity (MBI), Sydney Medical School, University of Sydney, Locked Bag 4001, Sydney, New South Wales, 2145, Australia.
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Graham SM. The management of infection with Mycobacterium tuberculosis in young children post-2015: an opportunity to close the policy-practice gap. Expert Rev Respir Med 2016; 11:41-49. [DOI: 10.1080/17476348.2016.1267572] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Stephen M. Graham
- Centre for International Child Health, University of Melbourne Department of Paediatrics and Murdoch Childrens Research Institute, Royal Children’s Hospital, Melbourne, Australia
- Department of Tuberculosis and HIV, International Union Against Tuberculosis and Lung Disease, Paris, France
- Centre for International Health, The Burnet Institute, Melbourne, Australia
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Fox GJ, Dobler CC, Marais BJ, Denholm JT. Preventive therapy for latent tuberculosis infection-the promise and the challenges. Int J Infect Dis 2016; 56:68-76. [PMID: 27872018 DOI: 10.1016/j.ijid.2016.11.006] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 11/07/2016] [Accepted: 11/08/2016] [Indexed: 02/03/2023] Open
Abstract
Around one third of the world's population may harbour latent tuberculosis infection (LTBI), an asymptomatic immunological state that confers a heightened risk of subsequently developing tuberculosis (TB). Effectively treating LTBI will be essential if the End TB Strategy is to be realized. This review evaluates the evidence in relation to the effectiveness of preventive antibiotic therapy to treat LTBI due to both drug-susceptible and drug-resistant bacteria. Current national and international preventive therapy guidelines are summarized, as well as ongoing randomized trials evaluating regimens to prevent drug-resistant TB. Populations that may benefit most from screening and treatment for LTBI include close contacts of patients with TB (particularly children under 5 years of age) and individuals with substantial immunological impairment. The risks and benefits of treatment must be carefully balanced for each individual. Electronic decision support tools offer one way in which clinicians can help patients to make informed decisions. Modelling studies indicate that the expanded use of preventive therapy will be essential to achieving substantial reductions in the global TB burden. However, the widespread scale-up of screening and treatment will require careful consideration of cost-effectiveness, while ensuring the drivers of ongoing disease transmission are also addressed.
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Affiliation(s)
- G J Fox
- Sydney Medical School, Room 574 Blackburn Building, University of Sydney, Sydney, 2006, Australia.
| | - C C Dobler
- Sydney Medical School, Room 574 Blackburn Building, University of Sydney, Sydney, 2006, Australia; South Western Sydney Clinical School, University of New South Wales, Sydney, Australia
| | - B J Marais
- The Children's Hospital at Westmead and the Marie Bashir Institute for Infectious Diseases and Biosecurity (MBI), University of Sydney, Sydney, Australia
| | - J T Denholm
- Victorian Tuberculosis Program, Melbourne Health, Victoria, Australia; Department of Microbiology and Immunology, University of Melbourne, Parkville, Victoria, Australia
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Bates M, Shibemba A, Mudenda V, Chimoga C, Tembo J, Kabwe M, Chilufya M, Hoelscher M, Maeurer M, Sinyangwe S, Mwaba P, Kapata N, Zumla A. Burden of respiratory tract infections at post mortem in Zambian children. BMC Med 2016; 14:99. [PMID: 27363601 PMCID: PMC4929772 DOI: 10.1186/s12916-016-0645-z] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 06/14/2016] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Autopsy studies are the gold standard for determining cause-of-death and can inform on improved diagnostic strategies and algorithms to improve patient care. We conducted a cross-sectional observational autopsy study to describe the burden of respiratory tract infections in inpatient children who died at the University Teaching Hospital in Lusaka, Zambia. METHODS Gross pathology was recorded and lung tissue was analysed by histopathology and molecular diagnostics. Recruitment bias was estimated by comparing recruited and non-recruited cases. RESULTS Of 121 children autopsied, 64 % were male, median age was 19 months (IQR, 12-45 months). HIV status was available for 97 children, of whom 34 % were HIV infected. Lung pathology was observed in 92 % of cases. Bacterial bronchopneumonia was the most common pathology (50 %) undiagnosed ante-mortem in 69 % of cases. Other pathologies included interstitial pneumonitis (17 %), tuberculosis (TB; 8 %), cytomegalovirus pneumonia (7 %) and pneumocystis Jirovecii pneumonia (5 %). Comorbidity between lung pathology and other communicable and non-communicable diseases was observed in 80 % of cases. Lung tissue from 70 % of TB cases was positive for Mycobacterium tuberculosis by molecular diagnostic tests. A total of 80 % of TB cases were comorbid with malnutrition and only 10 % of TB cases were on anti-TB therapy when they died. CONCLUSIONS More proactive testing for bacterial pneumonia and TB in paediatric inpatient settings is needed.
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Affiliation(s)
- Matthew Bates
- HerpeZ, University Teaching Hospital, Lusaka, Zambia. .,University of Zambia and University College London Medical School (UNZA-UCLMS) Research and Training Programme, University Teaching Hospital, Lusaka, Zambia. .,Department of Infection, Division of Infection and Immunity, University College London, and NIHR Biomedical Research centre at UCL Hospitals, London, UK.
| | - Aaron Shibemba
- Department of Pathology & Microbiology, University Teaching Hospital, Lusaka, Zambia
| | - Victor Mudenda
- Department of Pathology & Microbiology, University Teaching Hospital, Lusaka, Zambia
| | - Charles Chimoga
- HerpeZ, University Teaching Hospital, Lusaka, Zambia.,University of Zambia and University College London Medical School (UNZA-UCLMS) Research and Training Programme, University Teaching Hospital, Lusaka, Zambia
| | - John Tembo
- HerpeZ, University Teaching Hospital, Lusaka, Zambia.,University of Zambia and University College London Medical School (UNZA-UCLMS) Research and Training Programme, University Teaching Hospital, Lusaka, Zambia.,Institute for Infectious Diseases, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Mwila Kabwe
- HerpeZ, University Teaching Hospital, Lusaka, Zambia.,University of Zambia and University College London Medical School (UNZA-UCLMS) Research and Training Programme, University Teaching Hospital, Lusaka, Zambia
| | - Moses Chilufya
- HerpeZ, University Teaching Hospital, Lusaka, Zambia.,University of Zambia and University College London Medical School (UNZA-UCLMS) Research and Training Programme, University Teaching Hospital, Lusaka, Zambia
| | - Michael Hoelscher
- Division of Infectious Diseases and Tropical Medicine, Medical Centre of the University of Munich, Munich, Germany
| | - Markus Maeurer
- Therapeutic Immunology, Department of Laboratory Medicine, Department of Microbiology, and Department of Tumour and Cell Biology, Karolinska Institute, Stockholm, Sweden
| | - Sylvester Sinyangwe
- Department of Paediatrics & Child Health, University Teaching Hospital, Lusaka, Zambia
| | - Peter Mwaba
- University of Zambia and University College London Medical School (UNZA-UCLMS) Research and Training Programme, University Teaching Hospital, Lusaka, Zambia.,Ministry of Health, Lusaka, Zambia
| | - Nathan Kapata
- University of Zambia and University College London Medical School (UNZA-UCLMS) Research and Training Programme, University Teaching Hospital, Lusaka, Zambia.,National Tuberculosis Control Programme, Ministry of Community Development, Maternal and Child Health, Lusaka, Zambia
| | - Alimuddin Zumla
- University of Zambia and University College London Medical School (UNZA-UCLMS) Research and Training Programme, University Teaching Hospital, Lusaka, Zambia.,Department of Infection, Division of Infection and Immunity, University College London, and NIHR Biomedical Research centre at UCL Hospitals, London, UK
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Uptake of Isoniazid Preventive Therapy among Under-Five Children: TB Contact Investigation as an Entry Point. PLoS One 2016; 11:e0155525. [PMID: 27196627 PMCID: PMC4873181 DOI: 10.1371/journal.pone.0155525] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 04/29/2016] [Indexed: 01/11/2023] Open
Abstract
A child’s risk of developing tuberculosis (TB) can be reduced by nearly 60% with administration of 6 months course of isoniazid preventive therapy (IPT). However, uptake of IPT by national TB programs is low, and IPT delivery is a challenge in many resource-limited high TB-burden settings. Routinely collected program data was analyzed to determine the coverage and outcome of implementation of IPT for eligible under-five year old children in 28 health facilities in two regions of Ethiopia. A total of 504 index smear-positive pulmonary TB (SS+) cases were reported between October 2013 and June 2014 in the 28 health facilities. There were 282 under-five children registered as household contacts of these SS+ TB index cases, accounting for 17.9% of all household contacts. Of these, 237 (84%) were screened for TB symptoms, and presumptive TB was identified in 16 (6.8%) children. TB was confirmed in 5 children, producing an overall yield of 2.11% (95% confidence interval, 0.76–4.08%). Of 221 children eligible for IPT, 64.3% (142) received IPT, 80.3% (114) of whom successfully completed six months of therapy. No child developed active TB while on IPT. Contact screening is a good entry point for delivery of IPT to at risk children and should be routine practice as recommended by the WHO despite the implementation challenges.
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Graham SM, Grzemska M, Brands A, Nguyen H, Amini J, Triasih R, Talukder K, Ahmed S, Amanullah F, Kumar B, Tufail P, Detjen A, Marais B, Hennig C, Islam T. Regional initiatives to address the challenges of tuberculosis in children: perspectives from the Asia-Pacific region. Int J Infect Dis 2016; 32:166-9. [PMID: 25809775 DOI: 10.1016/j.ijid.2014.12.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Accepted: 12/06/2014] [Indexed: 11/28/2022] Open
Abstract
Increasing attention is being given to the challenges of management and prevention of tuberculosis in children and adolescents. There have been a number of recent important milestones achieved at the global level to address this previously neglected disease. There is now a need to increase activities and build partnerships at the regional and national levels in order to address the wide policy-practice gaps for implementation, and to take the key steps outlined in the Roadmap for Child Tuberculosis published in 2013. In this article, we provide the rationale and suggest strategies illustrated with examples to improve diagnosis, management, outcomes and prevention for children with tuberculosis in the Asia-Pacific region, with an emphasis on the need for greatly improved recording and reporting. Effective collaboration with community engagement between the child health sector, the National Tuberculosis control Programmes, community-based services and the communities themselves are essential.
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Affiliation(s)
- Stephen M Graham
- International Union Against Tuberculosis and Lung Disease, Paris, France; Centre for International Child Health, University of Melbourne Department of Paediatrics and Murdoch Childrens Research Institute, Royal Children's Hospital, Melbourne, Australia; Centre for International Health, Burnet Institute, Melbourne, Australia.
| | - Malgorzata Grzemska
- Global Tuberculosis Programme, World Health Organization, Geneva, Switzerland
| | - Annemieke Brands
- Global Tuberculosis Programme, World Health Organization, Geneva, Switzerland
| | - Huong Nguyen
- KNCV Tuberculosis Foundation Country Office, Ha Noi, Viet Nam
| | - James Amini
- National Department for Health, Port Moresby, Papua New Guinea
| | - Rina Triasih
- Department of Pediatrics, Dr. Sardjito Hospital/Faculty of Medicine, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | | | - Shakil Ahmed
- Bangladesh Paediatric Association TB CARE II Porject, Dhaka, Bangladesh
| | | | | | | | - Anne Detjen
- International Union Against Tuberculosis and Lung Disease, Paris, France
| | - Ben Marais
- Marie Bashir Institute for Infectious Diseases and Biosecurity and the Children's Hospital at Westmead, University of Sydney, Sydney, Australia
| | - Cornelia Hennig
- Stop TB and Leprosy Unit, Division of communicable Diseases, World Health Organization Regional Office for the Western Pacific, Manila, The Philippines
| | - Tauhid Islam
- Stop TB and Leprosy Unit, Division of communicable Diseases, World Health Organization Regional Office for the Western Pacific, Manila, The Philippines
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Rangaka MX, Cavalcante SC, Marais BJ, Thim S, Martinson NA, Swaminathan S, Chaisson RE. Controlling the seedbeds of tuberculosis: diagnosis and treatment of tuberculosis infection. Lancet 2015; 386:2344-53. [PMID: 26515679 PMCID: PMC4684745 DOI: 10.1016/s0140-6736(15)00323-2] [Citation(s) in RCA: 102] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The billions of people with latent tuberculosis infection serve as the seedbeds for future cases of active tuberculosis. Virtually all episodes of tuberculosis disease are preceded by a period of asymptomatic Mycobacterium tuberculosis infection; therefore, identifying infected individuals most likely to progress to disease and treating such subclinical infections to prevent future disease provides a crucial opportunity to interrupt tuberculosis transmission and reduce the global burden of tuberculosis disease. Programmes focusing on single strategies rather than comprehensive programmes that deliver an integrated arsenal for tuberculosis control might continue to struggle. Tuberculosis preventive therapy is a poorly used method that is essential for controlling the reservoirs of disease that drive the epidemic. Comprehensive control strategies that combine preventive therapy for the most high-risk populations and communities with improved case-finding and treatment, control of transmission, and health systems strengthening could ultimately lead to worldwide tuberculosis elimination. In this Series paper we outline challenges to implementation of preventive therapy and provide pragmatic suggestions for overcoming them. We further advocate for tuberculosis preventive therapy as the core of a renewed worldwide focus to implement a comprehensive epidemic control strategy that would reduce new tuberculosis cases to elimination targets. This strategy would be underpinned by accelerated research to further understand the biology of subclinical tuberculosis infections, develop novel diagnostics and drug regimens specifically for subclinical tuberculosis infection, strengthen health systems and community engagement, and enhance sustainable large scale implementation of preventive therapy programmes.
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Affiliation(s)
- Molebogeng X Rangaka
- Institute of Epidemiology and Health, University College London, London, UK; Department of Medicine, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
| | - Solange C Cavalcante
- Evandro Chagas National Institute of Infectious Diseases, Rio de Janeiro, Brazil
| | - Ben J Marais
- Children's Hospital at Westmead and the Centre for Research Excellence in Tuberculosis, University of Sydney, Australia
| | - Sok Thim
- Cambodian Health Committee, Phnom Penh, Cambodia
| | - Neil A Martinson
- Perinatal HIV Research Unit, University of Witwatersrand, Soweto, South Africa
| | | | - Richard E Chaisson
- Center for Tuberculosis Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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Zumla A, Maeurer M, Marais B, Chakaya J, Wejse C, Lipman M, McHugh TD, Petersen E. Commemorating World Tuberculosis Day 2015. Int J Infect Dis 2015; 32:1-4. [PMID: 25809748 DOI: 10.1016/j.ijid.2015.01.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- Alimuddin Zumla
- Division of Infection and Immunity, University College London, and NIHR BRC at University College Hospital, London, United Kingdom
| | - Markus Maeurer
- Therapeutic Immunology (TIM), Department of Laboratory Medicine, Karolinska Institutet and Center for allogeneic stem cell transplantation (CAST), Karolinska Hospital, Stockholm, Sweden
| | - Ben Marais
- Centre for Research Excellence in Tuberculosis (TB-CRE) and the Department of Paediatrics and Child Health, University of Sydney, Sydney, Australia
| | | | - Christian Wejse
- GloHAU Center for Global Health, Dept of Public Health, Aarhus University, Denmark. Department of Infectious Diseases, Aarhus University Hospital, Denmark and Bandim Health Project, INDEPTH Network, Bissau, Guinea Bissau
| | - Marc Lipman
- Royal Free London NHS Foundation Trust, and University College London, London, United Kingdom
| | - Timothy D McHugh
- Center for Clinical Microbiology, Division of Infection and Immunity, University College London, London, United Kingdom
| | - Eskild Petersen
- Department of Infectious Diseases and Clinical Microbiology, Institute for Clinical Medicine, Aarhus University and Aarhus University Hospital Skejby, Aarhus, Denmark.
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Marais BJ. Strategies to improve tuberculosis case finding in children. Public Health Action 2015; 5:90-1. [PMID: 26393106 DOI: 10.5588/pha.15.0028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Ben J Marais
- Marie Bashir Institute for Infectious Diseases and Biosecurity (MBI) and The Children's Hospital at Westmead, Sydney Medical School, University of Sydney, Sydney, Australia
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Evaluation of TB Case Finding through Systematic Contact Investigation, Chhattisgarh, India. Tuberc Res Treat 2015; 2015:670167. [PMID: 26236503 PMCID: PMC4506923 DOI: 10.1155/2015/670167] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 06/11/2015] [Accepted: 06/15/2015] [Indexed: 11/18/2022] Open
Abstract
Rationale. Contact investigation is an established tool for early case detection of tuberculosis (TB). In India, contact investigation is not often conducted, despite national policy, and the yield of contact investigation is not well described. Objective. To determine the yield of evaluating household contacts of sputum smear-positive TB cases in Rajnandgaon district, Chhattisgarh, India. Methods. Among 14 public health care facilities with sputum smear microscopy services, home visits were conducted to identify household contacts of all registered sputum smear-positive TB cases. We used a standardized protocol to screen for clinical symptoms suggestive of active TB with additional referral for chest radiograph and sputa collection. Results. From December 2010 to May 2011, 1,556 household contacts of 312 sputum smear-positive TB cases were identified, of which 148 (9.5%) were symptomatic. Among these, 109 (73.6%) were evaluated by sputum examination resulting in 11 cases (10.1%) of sputum smear-positive TB and 4 cases (3.6%) of smear-negative TB. Household visits contributed additional 63% TB cases compared to passive case detection alone. Conclusion. A standard procedure for conducting household contact investigation identified additional TB cases in the community and offered an opportunity to initiate isoniazid chemoprophylaxis among children.
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Triasih R, Robertson C, Duke T, Graham SM. Risk of infection and disease withMycobacterium tuberculosisamong children identified through prospective community-based contact screening in Indonesia. Trop Med Int Health 2015; 20:737-43. [DOI: 10.1111/tmi.12484] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Rina Triasih
- Department of Pediatrics; Dr. Sardjito Hospital/Faculty of Medicine; Universitas Gadjah Mada; Yogyakarta Indonesia
- Centre for International Child Health; Department of Paediatrics and Murdoch Childrens Research Institute; Royal Children's Hospital; University of Melbourne; Melbourne Australia
| | - Colin Robertson
- Department of Respiratory Medicine; Royal Children's Hospital; Melbourne Australia
| | - Trevor Duke
- Centre for International Child Health; Department of Paediatrics and Murdoch Childrens Research Institute; Royal Children's Hospital; University of Melbourne; Melbourne Australia
| | - Stephen M. Graham
- Centre for International Child Health; Department of Paediatrics and Murdoch Childrens Research Institute; Royal Children's Hospital; University of Melbourne; Melbourne Australia
- International Union Against Tuberculosis and Lung Disease; Paris France
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Hall C, Sukijthamapan P, dos Santos R, Nourse C, Murphy D, Gibbons M, Francis JR. Challenges to delivery of isoniazid preventive therapy in a cohort of children exposed to tuberculosis in Timor-Leste. Trop Med Int Health 2015; 20:730-6. [PMID: 25682846 DOI: 10.1111/tmi.12479] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES To evaluate the number and geographic location of children aged <5 years exposed to sputum smear-positive tuberculosis (TB) in Timor-Leste, to determine the proportion evaluated for isoniazid preventive therapy (IPT) and to review the programmatic challenges present in delivering IPT to this cohort. METHODS A total of 256 consecutive sputum smear-positive TB index cases diagnosed at Bairo Pite Clinic between August 2013 and July 2014 were interviewed about places of residence and household contacts <5 years of age in the 3 months preceding diagnosis. Attendance of these contacts for screening and the outcome of screening were recorded prospectively. RESULTS The majority (225 of 256, 88%) of index cases resided in Dili, but 73 of 225 (32%) of these also had a second address outside the capital. A total of 255 contacts were identified; 172 of 255 (67%) of whom lived in Dili district and 83 of 255 (33%) of whom resided in remote districts. Only 66 of 255 (26%) contacts attended for evaluation for IPT, of whom 46 of 255 (18%) started IPT and nine of 255 (3.5%) were diagnosed with TB. Attendance was significantly less likely when the index case was not the parent of the child contact. CONCLUSIONS Sputum smear-positive pulmonary TB cases frequently result in household exposure of children <5 years in Timor-Leste, and provision of IPT is suboptimal. Contacts are located in diverse and distant locations. Further studies to delineate access barriers to IPT and review programmatic models that will facilitate IPT scale up in Timor-Leste are needed.
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Affiliation(s)
- Charlotte Hall
- Bairo Pite Clinic, Dili, Timor-Leste; Hull and East Yorkshire NHS Trust, Hull, East Yorkshire, UK
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Jeena PM. Editorial commentary: Contact tracing in children exposed to an index case of tuberculosis: the need, the challenge, and the impact. Clin Infect Dis 2014; 60:19-20. [PMID: 25270647 DOI: 10.1093/cid/ciu754] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Prakash M Jeena
- Head of Paediatric Pulmonology, University of Kwazulu-Natal, Durban, South Africa
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