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Nyokabi NS, Phelan L, Lindahl JF, Berg S, Muunda E, Mihret A, Wood JLN, Moore HL. Exploring veterinary students' awareness and perception of zoonoses risks, infection control practices, and biosecurity measures in Ethiopia. Front Vet Sci 2024; 11:1385849. [PMID: 39044741 PMCID: PMC11263103 DOI: 10.3389/fvets.2024.1385849] [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: 02/13/2024] [Accepted: 06/28/2024] [Indexed: 07/25/2024] Open
Abstract
Universities and colleges are often regarded as playing a key role in educating veterinarians and animal health workers who advise farmers on herd health and animal husbandry. However, to date, studies examining veterinary students' knowledge of zoonotic diseases of public health importance and the source of this knowledge, as well as their preparedness to respond to these diseases, have focused on the Global North rather than the Global South. This study takes Ethiopia as a case study in exploring veterinary medicine students' knowledge of zoonosis risks, infection control practices and biosecurity measures, recognizing that it is imperative to reconcile national-level veterinary education curricula with emerging global trends, such as One Health-focused training. This training advocates for a collaborative, interdisciplinary response at local, national, and international levels to the adverse impact of zoonotic diseases on animal health and productivity, and human and environmental health. Data for this study were collected through a pre-tested online questionnaire administered to 154 veterinary students from several universities in Ethiopia. The findings of this study suggest veterinary students were aware of the public health risks posed by zoonoses and the important role that collaboration between the disciplines of human and animal health can play in addressing zoonoses and emerging health risks. However, students demonstrated poor knowledge of the need to adopt infection control measures (ICPs) and biosecurity measures to reduce occupational risks and prevent within and between herd transmission of infection. Moreover, students' vaccination rates against zoonotic diseases associated with occupational risks, such as rabies, were low. The results of this study suggest that there are currently gaps in Ethiopia's veterinary curriculum and that enhancing veterinary students' access to information regarding infection control practices and biosecurity measures could contribute to reducing their future occupational exposure to zoonoses. This study highlights the policy implications of the current veterinary medicine curriculum in Ethiopia and the scope for aligning the curriculum with important global initiatives, such as One Health-focused training.
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Affiliation(s)
- Ndungu S. Nyokabi
- Institute for Global Prosperity, University College London, London, United Kingdom
| | - Lisette Phelan
- School of Geography, University of Leeds, Leeds, United Kingdom
- Environmental Economics and Natural Resources Group, Wageningen University and Research, Wageningen, Netherlands
| | - Johanna F Lindahl
- International Livestock Research Institute (ILRI), Nairobi, Kenya
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Stefan Berg
- Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - Emmanuel Muunda
- International Livestock Research Institute (ILRI), Nairobi, Kenya
| | - Adane Mihret
- Armauer Hansen Research Institute (AHRI), Addis Ababa, Ethiopia
| | - James L. N. Wood
- Department of Veterinary Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Henrietta L. Moore
- Institute for Global Prosperity, University College London, London, United Kingdom
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Fareed Z, Rana A, Hadi SA, Geluk A, Hope JC, Khalid H. A one health-focused literature review on bovine and zoonotic tuberculosis in Pakistan from the past two decades: challenges and way forward for control. One Health 2024; 18:100763. [PMID: 38846704 PMCID: PMC11153871 DOI: 10.1016/j.onehlt.2024.100763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Accepted: 05/22/2024] [Indexed: 06/09/2024] Open
Abstract
Bovine tuberculosis (bTB), caused by Mycobacterium bovis (M. bovis), is a globally prevalent zoonotic infectious disease. World Organization for Animal Health (WOAH) estimates indicate that up to 10% of the total human TB cases in developing countries are attributed to M. bovis. Pakistan ranks 4th in global milk production with a livestock population of over 212 million animals. Over 8 million families are involved in raising these animals as a means of livelihood. To date, there is an absence of national-level data on the prevalence of bTB and an effective control program is still lacking. The multifaceted impacts and substantial economic losses render addressing bTB a daunting, but highly important challenge. In this review, we summarise all the freely available literature on M. bovis infection from Pakistan using Google scholar and PubMed databases. A total of 40 animal studies were identified using search terms: "bovine tuberculosis in Pakistan, bTB, Pakistan, Mycobacterium bovis in Pakistan, M. bovis in Pakistan"; while seven human studies were identified using the terms: zoonotic tuberculosis in Pakistan', 'M. bovis in humans Pakistan', 'zTB in TB patients in Pakistan". We have summarized all these studies to identify critical risk factors involved in transmission of bTB among animals and humans. Despite lack of comprehensive and geographically representative studies, the literature suggests a varying prevalence of bTB in animals, ranging from as low as 2% to as high as 19%. Regarding zTB prevalence in humans, estimates range from 1.5% to 13% in high-risk group of farm and abattoir workers, with notably higher percentages in extra-pulmonary TB cases. The review also addresses the challenges that Pakistan faces in formulating an effective policy for the control and eradication of bTB. We conclude with one-health based recommendations as a way forward for controlling TB caused by M. bovis in cattle and humans.
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Affiliation(s)
- Zahid Fareed
- Veterinary Research Institute, Lahore, Punjab, Pakistan
| | - Aysha Rana
- Veterinary Research Institute, Lahore, Punjab, Pakistan
| | - Syeda Anum Hadi
- Consultant-Technical Coordinator, Health Security Partners, Islamabad, Pakistan
| | - Annemieke Geluk
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, the Netherlands
| | - Jayne C. Hope
- Division of Immunology, The Roslin Institute, University of Edinburgh, EH25 9RG, UK
| | - Hamza Khalid
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, the Netherlands
- Division of Immunology, The Roslin Institute, University of Edinburgh, EH25 9RG, UK
- Center for Inflammation Research, The Queen's Medical Research Institute, Edinburgh BioQuarter, 47 Little France Crescent, Edinburgh EH16 4TJ, UK
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Khairullah AR, Moses IB, Kusala MKJ, Tyasningsih W, Ayuti SR, Rantam FA, Fauziah I, Silaen OSM, Puspitasari Y, Aryaloka S, Raharjo HM, Hasib A, Yanestria SM, Nurhidayah N. Unveiling insights into bovine tuberculosis: A comprehensive review. Open Vet J 2024; 14:1330-1344. [PMID: 39055751 PMCID: PMC11268907 DOI: 10.5455/ovj.2024.v14.i6.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Accepted: 05/17/2024] [Indexed: 07/27/2024] Open
Abstract
The frequent zoonotic disease known as "bovine tuberculosis" is brought on by the Mycobacterium bovis bacteria, which can infect both people and animals. The aim of this review article is to provide an explanation of the etiology, history, epidemiology, pathogenesis, clinical symptoms, diagnosis, transmission, risk factors, public health importance, economic impact, treatment, and control of bovine tuberculosis. Primarily, bovine tuberculosis affects cattle, but other animals may also be affected. Bovine tuberculosis is present throughout the world, with the exception of Antarctica. Cattle that contract bovine tuberculosis might suffer from a persistent, crippling illness. In the early stages of the disease, there are no symptoms. The tuberculin test is the primary method for detecting bovine tuberculosis in cows. Depending on its localized site in the infected animal, M. bovis can be found in respiratory secretions, milk, urine, feces, vaginal secretions, semen, feces, and exudates from lesions (such as lymph node drainage and some skin lesions). This illness generally lowers cattle productivity and could have a negative financial impact on the livestock business, particularly the dairy industry. The most effective first-line anti-tuberculosis chemotherapy consists of isoniazid, ethambutol, rifampin, and streptomycin. Second-line drugs used against bovine tuberculosis include ethionamide, capreomycin, thioacetazone, and cycloserine. To successfully control and eradicate bovine tuberculosis, developed nations have implemented routine testing and culling of infected animals under national mandatory programs.
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Affiliation(s)
- Aswin Rafif Khairullah
- Research Center for Veterinary Science, National Research and Innovation Agency (BRIN), Bogor, Indonesia
| | - Ikechukwu Benjamin Moses
- Department of Applied Microbiology, Faculty of Science, Ebonyi State University, Abakaliki, Nigeria
| | | | - Wiwiek Tyasningsih
- Division of Veterinary Microbiology, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Siti Rani Ayuti
- Faculty of Veterinary Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Fedik Abdul Rantam
- Division of Veterinary Microbiology, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Ima Fauziah
- Research Center for Veterinary Science, National Research and Innovation Agency (BRIN), Bogor, Indonesia
| | - Otto Sahat Martua Silaen
- Doctoral Program in Biomedical Science, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Yulianna Puspitasari
- Division of Veterinary Microbiology, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Suhita Aryaloka
- Master Program of Veterinary Agribusiness, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Hartanto Mulyo Raharjo
- Division of Veterinary Microbiology, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Abdullah Hasib
- School of Agriculture and Food Sustainability, The University of Queensland, Gatton, Australia
| | | | - Nanis Nurhidayah
- Research Center for Veterinary Science, National Research and Innovation Agency (BRIN), Bogor, Indonesia
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Didi L, Abakar MF, Bongo Naré Richard N, Djané A, Kessely H, Issaka Y, Diagbouba S, Adrien Marie Gaston B, Zinsstag J, Bonfoh B, Dürr S. Assessment of the knowledge, attitudes, and practices toward human tuberculosis amongst rural communities in Chad. Front Vet Sci 2024; 11:1334303. [PMID: 38818496 PMCID: PMC11137331 DOI: 10.3389/fvets.2024.1334303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 03/29/2024] [Indexed: 06/01/2024] Open
Abstract
Introduction Tuberculosis (TB) is an infectious zoonotic disease caused by bacteria belonging to the Mycobacterium tuberculosis complex. In sub-Saharan African countries such as Chad, TB is endemic and causes a high burden on humans and animals through morbidity, mortality, and reduced productivity in livestock. To effectively prevent and control the disease, strong coordination between policymakers, health and veterinary services, civil society organizations, and communities is needed. It also requires an understanding of the knowledge the communities have regarding TB. However, such knowledge is under-investigated, especially in rural areas. How knowledge affects people's attitudes and practices is also unclear. The main objective of this study was to investigate the knowledge, attitudes, and practices (KAP) of Chadian rural communities to better involve them in TB surveillance programs. Methods A survey was conducted in 2021 in five rural health centers. Face-to-face interviews were conducted with persons suspected of having TB, and data on KAP were recorded and analyzed. Results In total, 139 participants were enrolled. Overall, the knowledge and attitude of the participants were found to be good to moderate, with 126 (90.6%) and 97 (69.7%) having good knowledge and attitude, respectively. However, their practices were found to be rather weak, with only 40 (28.7%) participants having good practices. Men were found to have good knowledge about the disease significantly more often than women. Poor attitude was significantly associated with a mobile lifestyle compared to settled lifestyles and with farmers (mainly engaged in agriculture) compared to breeders (livestock keepers). Poor health practices were associated more with men than women and with settled lifestyles compared to a mobile lifestyle. Good practices were found to be in line with good knowledge and good attitudes; however, in the analyses, the association was not significant [OR knowledge = 5.83 (95% C.I. 0.6842.83), p = 0.112; OR attitude = 2.09 (95% C.I. 0.875.04), p = 0.100]. Furthermore, attitude was not associated with knowledge [OR = 1.03 (95% C.I. 0.303.55), p = 0.964]. Discussion and conclusion Our study highlights the need for targeted sensitization and awareness campaigns for communities with poor knowledge and attitudes regarding TB. These campaigns should also include practical training to increase the level of good practice rather than simply providing knowledge.
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Affiliation(s)
- Lamireou Didi
- Institut de Recherche en Elevage Pour le Développement, N'Djamena, Chad
| | | | | | - Adou Djané
- Centre Suisse de Recherches Scientifiques (CSRS), Adiopodoume, Côte d'Ivoire
- Institut National de Santé Publique (INSP) Côte d'Ivoire, Abidjan, Côte d'Ivoire
| | - Hamit Kessely
- Centre de Support en Santé Internationale–Programme d'Appui au District Sanitaires au Tchad, N'Djamena, Chad
| | - Yaya Issaka
- Centre de Support en Santé Internationale–Programme d'Appui au District Sanitaires au Tchad, N'Djamena, Chad
| | - Serge Diagbouba
- Université Nazi Boni, Ecole Doctorale Sciences et Agronomie: Biologie Appliquée et Modélisation des Systèmes Biologiques, Bobo Dioulasso, Burkina Faso
| | - Belem Adrien Marie Gaston
- Université Nazi Boni, Ecole Doctorale Sciences et Agronomie: Biologie Appliquée et Modélisation des Systèmes Biologiques, Bobo Dioulasso, Burkina Faso
| | - Jakob Zinsstag
- Swiss Tropical and Public Health Institute, Basel, Switzerland
| | - Bassirou Bonfoh
- Centre Suisse de Recherches Scientifiques (CSRS), Adiopodoume, Côte d'Ivoire
| | - Salome Dürr
- Veterinary and Public Health Institute, Faculty of Vetsuisse, University of Bern, Bern, Switzerland
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Barandiaran S, Marfil MJ, La Sala LF, Tammone A, Condori WE, Winter M, Abate S, Rosas AC, Ponce L, Carpinetti B, Serena MS, Lozano Calderón LC, Zumárraga MJ. Tuberculosis in Wild Pigs from Argentina. ECOHEALTH 2024; 21:71-82. [PMID: 38727761 DOI: 10.1007/s10393-024-01681-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 03/19/2024] [Indexed: 05/26/2024]
Abstract
Mycobacterium bovis, a member of the Mycobacterium tuberculosis complex (MTC) and non-tuberculous Mycobacteria (NTM), may infect wild and domestic mammals, including humans. Although cattle are the main hosts and spreaders of M. bovis, many wildlife hosts play an important role worldwide. In Argentina, wild boar and domestic pigs are considered important links in mammalian tuberculosis (mTB) transmission. The aim of this work was to investigate the presence of M. bovis in wild pigs from different regions of Argentina, to characterize isolates of M. bovis obtained, and to compare those with other previously found in vertebrate hosts. A total of 311 samples from wild pigs were obtained, and bacteriological culture, molecular identification and genotyping were performed, obtaining 63 isolates (34 MTC and 29 NTM). Twelve M. bovis spoligotypes were detected. Our findings suggest that wild pigs have a prominent role as reservoirs of mTB in Argentina, based on an estimated prevalence of 11.2 ± 1.8% (95% CI 8.0-14.8) for MTC and the frequency distribution of spoligotypes shared by cattle (75%), domestic pigs (58%) and wildlife (50%). Argentina has a typical scenario where cattle and pigs are farm-raised extensively, sharing the environment with wildlife, creating conditions for effective transmission of mTB in the wildlife-livestock-human interface.
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Affiliation(s)
- Soledad Barandiaran
- Instituto de Investigaciones en Producción Animal (INPA), Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad de Buenos Aires, Av. Chorroarín 280, 1427, Buenos Aires, Argentina
| | - María Jimena Marfil
- Instituto de Investigaciones en Producción Animal (INPA), Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad de Buenos Aires, Av. Chorroarín 280, 1427, Buenos Aires, Argentina.
| | | | - Agostina Tammone
- Centro de Investigación Veterinaria Tandil (CIVETAN) (UNCPBA-CICPBA-CONICET), Tandil, Argentina
| | - Walter Ezequiel Condori
- Centro de Investigación Veterinaria Tandil (CIVETAN) (UNCPBA-CICPBA-CONICET), Tandil, Argentina
| | - Marina Winter
- Sede Viedma del Centro de Investigaciones y Transferencia de Río Negro, Universidad Nacional de Río Negro, Viedma, Argentina
| | - Sergio Abate
- Sede Viedma del Centro de Investigaciones y Transferencia de Río Negro, Universidad Nacional de Río Negro, Viedma, Argentina
| | - Ana Carolina Rosas
- Programa Restauración de ambientes y especies amenazadas, Fundación Rewilding Argentina, Buenos Aires, Argentina
| | - Loredana Ponce
- Instituto de Investigaciones en Producción Animal (INPA), Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad de Buenos Aires, Av. Chorroarín 280, 1427, Buenos Aires, Argentina
| | - Bruno Carpinetti
- Gestión Ambiental/Ecología, Instituto de Ciencias Sociales y Administración, Universidad Nacional Arturo Jauretche, Buenos Aires, Argentina
| | - María Soledad Serena
- Laboratorio de Virología, Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, La Plata, Argentina
| | | | - Martín José Zumárraga
- Instituto de Agrobiotecnología y Biología Molecular IABIMO, UEDD INTA-CONICET, Buenos Aires, Argentina
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Li D, Li DN, Liu XY, Song YH, Liu XT, Sehrish S, Jia YX, Zong Y, Li JM, Shi K, Leng X, Liu F, Diao NC, Zeng FL, Gong QL, Du R. Prevalence of Mycobacterium bovis in deer in mainland China: a systematic review and meta-analysis. Front Vet Sci 2024; 11:1333975. [PMID: 38440384 PMCID: PMC10909987 DOI: 10.3389/fvets.2024.1333975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 02/05/2024] [Indexed: 03/06/2024] Open
Abstract
Background Deer tuberculosis is a chronic zoonotic infectious disease, despite the existence of socio-economic and zoonotic risk factors, but at present, there has been no systematic review of deer tuberculosis prevalence in mainland China. The aim of this meta-analysis was to estimate the overall prevalence of deer TB in mainland China and to assess possible associations between potential risk factors and the prevalence of deer tuberculosis. Methodology This study was searched in six databases in Chinese and English, respectively (1981 to December 2023). Four authors independently reviewed the titles and abstracts of all retrieved articles to establish the inclusion exclusion criteria. Using the meta-analysis package estimated the combined effects. Cochran's Q-statistic was used to analyze heterogeneity. Funnel plots (symmetry) and used the Egger's test identifying publication bias. Trim-and-fill analysis methods were used for validation and sensitivity analysis. we also performed subgroup and meta-regression analyses. Results In this study, we obtained 4,400 studies, 20 cross-sectional studies were screened and conducted a systematic review and meta-analysis. Results show: The overall prevalence of tuberculosis in deer in mainland China was 16.1% (95% confidence interval (CI):10.5 24.6; (Deer tuberculosis infected 5,367 out of 22,215 deer in mainland China) 5,367/22215; 1981 to 2023). The prevalence in Central China was the highest 17.5% (95% CI:14.0-21.9; 63/362), and among provinces, the prevalence in Heilongjiang was the highest at 26.5% (95% CI:13.2-53.0; 1557/4291). Elaphurus davidianus was the most commonly infected species, with a prevalence of 35.3% (95% CI:18.5-67.2; 6/17). We also assessed the association between geographic risk factors and the incidence of deer tuberculosis. Conclusion Deer tuberculosis is still present in some areas of China. Assessing the association between risk factors and the prevalence of deer tuberculosis showed that reasonable and scientific-based breeding methods, a suitable breeding environment, and rapid and accurate detection methods could effectively reduce the prevalence of deer tuberculosis. In addition, in the management and operation of the breeding base, improving the scientific feed nutrition standards and establishing comprehensive standards for disease prevention, immunization, quarantine, treatment, and disinfection according to the breeding varieties and scale, are suggested as ways to reduce the prevalence of deer tuberculosis.
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Affiliation(s)
- Dong Li
- College of Chinese Medicine Materials, Jilin Agricultural University, Changchun, China
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Dan-Ni Li
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Xin-Yue Liu
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Yu-Hao Song
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Xue-Tong Liu
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Siddique Sehrish
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Yu-Xin Jia
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Ying Zong
- College of Chinese Medicine Materials, Jilin Agricultural University, Changchun, China
- Laboratory of Production and Product Application of Sika Deer of Jilin Province, Jilin Agricultural University, Changchun, China
| | - Jian-Ming Li
- College of Chinese Medicine Materials, Jilin Agricultural University, Changchun, China
- Laboratory of Production and Product Application of Sika Deer of Jilin Province, Jilin Agricultural University, Changchun, China
| | - Kun Shi
- College of Chinese Medicine Materials, Jilin Agricultural University, Changchun, China
- Laboratory of Production and Product Application of Sika Deer of Jilin Province, Jilin Agricultural University, Changchun, China
| | - Xue Leng
- College of Chinese Medicine Materials, Jilin Agricultural University, Changchun, China
- Laboratory of Production and Product Application of Sika Deer of Jilin Province, Jilin Agricultural University, Changchun, China
| | - Fei Liu
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
- Laboratory of Production and Product Application of Sika Deer of Jilin Province, Jilin Agricultural University, Changchun, China
| | - Nai-Chao Diao
- College of Chinese Medicine Materials, Jilin Agricultural University, Changchun, China
- Laboratory of Production and Product Application of Sika Deer of Jilin Province, Jilin Agricultural University, Changchun, China
| | - Fan-Li Zeng
- College of Chinese Medicine Materials, Jilin Agricultural University, Changchun, China
- Laboratory of Production and Product Application of Sika Deer of Jilin Province, Jilin Agricultural University, Changchun, China
| | - Qing-Long Gong
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
- Laboratory of Production and Product Application of Sika Deer of Jilin Province, Jilin Agricultural University, Changchun, China
| | - Rui Du
- College of Chinese Medicine Materials, Jilin Agricultural University, Changchun, China
- Laboratory of Production and Product Application of Sika Deer of Jilin Province, Jilin Agricultural University, Changchun, China
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Zahran M, El-Shabasy RM, Elrashedy A, Mousa W, Nayel M, Salama A, Zaghawa A, Elsify A. Recent progress in the genotyping of bovine tuberculosis and its rapid diagnosis via nanoparticle-based electrochemical biosensors. RSC Adv 2023; 13:31795-31810. [PMID: 37908649 PMCID: PMC10613952 DOI: 10.1039/d3ra05606f] [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: 08/17/2023] [Accepted: 10/16/2023] [Indexed: 11/02/2023] Open
Abstract
Bovine tuberculosis (bTB) is considered a worldwide infectious zoonotic disease. Mycobacterium bovis causes bTB disease. It is one of the Mycobacterium tuberculosis complex (MTBC) members. MTBC is a clonal complex of close relatives with approximately 99.95% similarity. M. bovis is a spillover pathogen that can transmit from animals to humans and rarely from humans to animals with contact. Genotyping techniques are important to discriminate and differentiate between MTBC species. Spoligotyping and mycobacterial interspersed repetitive unit-variable number tandem repeat (MIRU-VNTR) are widely used but they have some limitations. As an alternative, whole genome sequencing approaches have been utilized due to their high-resolution power. They are employed in typing M. bovis and explain the evolutionary and phylogenetic relationships between isolates. The control of bTB disease has attracted a large amount of attention. Rapid and proper diagnosis is necessary for monitoring the disease as an initial step for its control and treatment. Nanotechnology has a potential impact on the rapid diagnosis and treatment of bTB through the use of nanocarrier and metal nanoparticles (NPs). Special attention has been paid to voltammetric and impedimetric electrochemical strategies as facile, sensitive, and selective methods for the efficient detection of tuberculosis. The efficacy of these sensors is enhanced in the presence of NPs, which act as recognition and/or redox probes. Gold, silver, copper, cobalt, graphene, and magnetic NPs, as well as polypyrrole nanowires and multiwalled carbon nanotubes have been employed for detecting tuberculosis. Overall, NP-based electrochemical sensors represent a promising tool for the diagnosis of bTB.
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Affiliation(s)
- Moustafa Zahran
- Department of Chemistry, Faculty of Science, Menoufia University Shebin El-Kom 32512 Egypt
- Menoufia Company for Water and Wastewater, Holding Company for Water and Wastewater Menoufia 32514 Egypt
| | - Rehan M El-Shabasy
- Department of Chemistry, Faculty of Science, Menoufia University Shebin El-Kom 32512 Egypt
- Chemistry Department, The American University in Cairo AUC Avenue New Cairo 11835 Egypt
| | - Alyaa Elrashedy
- Department of Animal Medicine and Infectious Diseases, Faculty of Veterinary Medicine, University of Sadat City Egypt
| | - Walid Mousa
- Department of Animal Medicine and Infectious Diseases, Faculty of Veterinary Medicine, University of Sadat City Egypt
| | - Mohamed Nayel
- Department of Animal Medicine and Infectious Diseases, Faculty of Veterinary Medicine, University of Sadat City Egypt
| | - Akram Salama
- Department of Animal Medicine and Infectious Diseases, Faculty of Veterinary Medicine, University of Sadat City Egypt
| | - Ahmed Zaghawa
- Department of Animal Medicine and Infectious Diseases, Faculty of Veterinary Medicine, University of Sadat City Egypt
| | - Ahmed Elsify
- Department of Animal Medicine and Infectious Diseases, Faculty of Veterinary Medicine, University of Sadat City Egypt
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MONDE N, MUNYEME M, SIZIYA S, ZULU M, CHONGWE G, KABELENGA E, DAKA V, SIAME KK, TEMBO R, MALAMA S. Risk factors associated with zoonotic tuberculosis at the animal-human interface in a tuberculosis-endemic sub-Saharan country. J Vet Med Sci 2023; 85:1136-1141. [PMID: 37574280 PMCID: PMC10600531 DOI: 10.1292/jvms.22-0565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 07/18/2023] [Indexed: 08/15/2023] Open
Abstract
We aimed to assess the proportion of tuberculosis in humans and tuberculosis (TB)-associated abattoir condemnations from the animal sector, as well as determine risk factors of zoonotic tuberculosis at the animal-human interface in Zambia. The study involved 255 presumptive TB patients and 156 cattle carcasses and was conducted from April 2020 to December 2021. Univariable and multivariable logistic regressions were performed for risk factor analysis for zoonotic TB. The overall proportion of bovine tuberculosis in traditional cattle and the proportion of tuberculosis among presumptive TB patients were 39.7% and 10.2%, respectively. Consumption of raw milk (adjusted odds ratio (AOR)=2.72, 95% confidence interval (CI): 1.73-4.28) and history of previous contact with a TB patient (AOR=1.86, 95% CI: 1.17-2.95) were risk factors for zoonotic TB at the animal-human interface of Zambia. Therefore, community campaigns and sensitization on zoonotic TB transmission are recommended.
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Affiliation(s)
- Ngula MONDE
- Department of Biomedical Sciences, Tropical Diseases
Research Center, Ndola, Zambia
- Department of Disease Control, School of Veterinary
Medicine, University of Zambia, Lusaka, Zambia
| | - Musso MUNYEME
- Department of Disease Control, School of Veterinary
Medicine, University of Zambia, Lusaka, Zambia
| | - Seter SIZIYA
- Micheal Chilufya Sata School of Medicine, Copperbelt
University, Ndola, Zambia
| | - Mildred ZULU
- Department of Disease Control, School of Veterinary
Medicine, University of Zambia, Lusaka, Zambia
- Department of Pathology and Microbiology, School of
Medicine, University of Zambia, Lusaka, Zambia
| | - Gershom CHONGWE
- Department of Biomedical Sciences, Tropical Diseases
Research Center, Ndola, Zambia
| | - Elijah KABELENGA
- Department of Obstetrics and Gynaecology, Ndola Teaching
Hospital, Postal Agency, Ndola, Zambia
| | - Victor DAKA
- Micheal Chilufya Sata School of Medicine, Copperbelt
University, Ndola, Zambia
| | | | - Rabecca TEMBO
- Department of Pathology and Microbiology, School of
Medicine, University of Zambia, Lusaka, Zambia
| | - Sydney MALAMA
- Department of Disease Control, School of Veterinary
Medicine, University of Zambia, Lusaka, Zambia
- Department of Biological Sciences, School of Natural
Sciences, University of Zambia, Lusaka, Zambia
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9
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Kanankege KST, Traynor I, Perez AM. A reanalysis: Do hog farms cause disease in North Carolina neighborhoods? Front Vet Sci 2023; 9:1052306. [PMID: 36845665 PMCID: PMC9945130 DOI: 10.3389/fvets.2022.1052306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 11/30/2022] [Indexed: 02/11/2023] Open
Abstract
A 2018 publication reported that communities living near hog Concentrated Animal Feeding Operations (CAFO) in North Carolina, USA have increased negative health outcomes and mortalities. While the authors stated that the associations do not imply causation, speculative interpretation of their results by media and subsequent use as evidence in lawsuits caused detrimental effects on the swine industry. We repeated their study using updated data to evaluate the strength of conclusions and appropriateness of methods used with the ultimate goal of alerting on the impact that study limitations may have when used as evidence. As done in the 2018 study, logistic regression was conducted at the individual level using 2007-2018 data, while presumably correcting for six confounders drawn from zip code or county-level databases. Exposure to CAFOs was defined by categorizing zip codes into three by swine density; where, >1 hogs/km2 (G1), > 232 hogs/km2 (G2), and no hogs (Control). Association with CAFO exposure resulting in mortality, hospital admissions, and emergency department visits were analyzed related to eight conditions (six from the previous study: anemia, kidney disease, infectious diseases, tuberculosis, low birth weight, and we added HIV and diabetes). Re-evaluation identified shortcomings including ecological fallacy, residual confounding, inconsistency of associations, and overestimation of exposure. HIV and diabetes, which are not causally relatable to CAFOs, were also prominent in these neighborhoods likely reflecting underlying systemic health disparities. Hence, we emphasize the need for improved exposure analysis and the importance of responsible interpretation of ecological studies that affect both public health and agriculture.
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Affiliation(s)
- Kaushi S. T. Kanankege
- Center for Animal Health and Food Safety, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, United States,*Correspondence: Kaushi S. T. Kanankege ✉
| | - Isaac Traynor
- School of Public Health, University of Minnesota, Minneapolis, MN, United States,College of Veterinary Medicine, Purdue University, West Lafayette, IN, United States
| | - Andres M. Perez
- Center for Animal Health and Food Safety, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, United States
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10
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Carneiro PAM, Pasquatti TN, Lima DAR, Rodrigues RA, Takatani H, Silva CBDG, Jardim R, Abramovitch RB, Wilkins MJ, Davila AMR, Araujo FR, Kaneene JB. Milk Contamination by Mycobacterium tuberculosis Complex, Implications for Public Health in Amazonas, Brazil. J Food Prot 2022; 85:1667-1673. [PMID: 34788443 DOI: 10.4315/jfp-21-303] [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: 08/03/2021] [Accepted: 10/29/2021] [Indexed: 11/11/2022]
Abstract
ABSTRACT In Brazil, contamination of raw milk with Mycobacterium tuberculosis complex (MTC) has been reported in several states. The highest rate of consumption of raw milk and its derivatives in Brazil occurs in Amazonas. This state also has the highest prevalence of tuberculosis in both humans and livestock. We assessed the contamination of cow's milk and buffalo's milk with MTC in Amazonas, focusing on Mycobacterium bovis, the species most commonly found in cattle and buffalo. In 2019, 250 samples of raw milk (91 from cattle, 159 from buffalo) were collected before processing from three milk plants in the state of Amazonas. The samples were placed into 21 pools and analyzed using shotgun metagenomic sequencing and taxonomic classification with Kraken 2 and MegaBLAST. To confirm the identity of mycobacterial species found, BLASTN was used to identify specific genomic positions in the TbD1 and RD1 regions and flanking RD4 region. MTC genetic material was identified in all pools of raw milk. Genetic material consistent with M. bovis was identified in seven pools of raw milk (1 from cattle, 6 from buffalo). Buffalo's milk had significantly higher MTC reads than did cow's milk. The common practice of consumption of raw milk and its derivatives in Amazonas presents a risk to public health. Urgent measures to prevent transmission of foodborne tuberculosis are needed in the Amazon region. Greater efforts and resources also should be directed toward elimination of bovine tuberculosis in cattle and buffalo herds in Amazonas and the rest of Brazil. HIGHLIGHTS
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Affiliation(s)
- P A M Carneiro
- Center for Comparative Epidemiology, Michigan State University, East Lansing, Michigan 48824, USA.,Amazonas State Federal Institute of Science and Technology, Av. Cosme Ferreira, 8045, Manaus, Amazonas, Brazil
| | - T N Pasquatti
- Dom Bosco Catholic University, Avenida Tamandaré 6000, Jardim Seminário, Campo Grande, Mato Grosso do Sul, 79117-900, Brazil
| | - D A R Lima
- Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
| | - R A Rodrigues
- Embrapa Gado de Corte, Av. Radio Maia, 830 Vila Popular, Campo Grande, Mato Grosso do Sul, 79106-550, Brazil
| | - H Takatani
- Amazonas State Agro Defense Agency, Av. Carlos Drummond de Andrade, 1.460, Bloco G, Manaus, Amazonas, 69077-730, Brazil
| | - C B D G Silva
- Amazonas State Agro Defense Agency, Av. Carlos Drummond de Andrade, 1.460, Bloco G, Manaus, Amazonas, 69077-730, Brazil
| | - R Jardim
- Computational and Systems Biology Laboratory, Oswaldo Cruz Institute and Graduate Program in Biodiversity and Health, FIOCRUZ, Rio de Janeiro, Brazil
| | - R B Abramovitch
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan 48824, USA
| | - M J Wilkins
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, Michigan 48824, USA
| | - A M R Davila
- Computational and Systems Biology Laboratory, Oswaldo Cruz Institute and Graduate Program in Biodiversity and Health, FIOCRUZ, Rio de Janeiro, Brazil
| | - F R Araujo
- Embrapa Gado de Corte, Av. Radio Maia, 830 Vila Popular, Campo Grande, Mato Grosso do Sul, 79106-550, Brazil
| | - J B Kaneene
- Center for Comparative Epidemiology, Michigan State University, East Lansing, Michigan 48824, USA
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11
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Jarde A, Romano E, Afaq S, Elsony A, Lin Y, Huque R, Elsey H, Siddiqi K, Stubbs B, Siddiqi N. Prevalence and risks of tuberculosis multimorbidity in low-income and middle-income countries: a meta-review. BMJ Open 2022; 12:e060906. [PMID: 36175100 PMCID: PMC9528681 DOI: 10.1136/bmjopen-2022-060906] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVES Co-occurrence of tuberculosis (TB) with other chronic conditions (TB multimorbidity) increases complexity of management and adversely affects health outcomes. We aimed to map the prevalence of the co-occurrence of one or more chronic conditions in people with TB and associated health risks by systematically reviewing previously published systematic reviews. DESIGN Systematic review of systematic reviews (meta-review). SETTING Low-income and middle-income countries (LMICs). PAPERS We searched in Medline, Embase, PsycINFO, Social Sciences Citation Index, Science Citation Index, Emerging Sources Citation Index and Conference Proceedings Citation Index, and the WHO Global Index Medicus from inception to 23 October 2020, contacted authors and reviewed reference lists. Pairs of independent reviewers screened titles, abstracts and full texts, extracted data and assessed the included reviews' quality (AMSTAR2). We included systematic reviews reporting data for people in LMICs with TB multimorbidity and synthesised them narratively. We excluded reviews focused on children or specific subgroups (eg, incarcerated people). PRIMARY AND SECONDARY OUTCOME MEASURES Prevalence or risk of TB multimorbidity (primary); any measure of burden of disease (secondary). RESULTS From the 7557 search results, 54 were included, representing >6 296 000 people with TB. We found that the most prevalent conditions in people with TB were depression (45.19%, 95% CI: 38.04% to 52.55%, 25 studies, 4903 participants, I2=96.28%, high quality), HIV (31.81%, 95% CI: 27.83% to 36.07%, 68 studies, 62 696 participants, I2=98%, high quality) and diabetes mellitus (17.7%, 95% CI: 15.1% to 20.0.5%, 48 studies, 48,036 participants, I2=98.3%, critically low quality). CONCLUSIONS We identified several chronic conditions that co-occur in a significant proportion of people with TB. Although limited by varying quality and gaps in the literature, this first meta-review of TB multimorbidity highlights the magnitude of additional ill health burden due to chronic conditions on people with TB. PROSPERO REGISTRATION NUMBER CRD42020209012.
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Affiliation(s)
| | - Eugenia Romano
- Department of Psychological Medicine, Institute of Psychiatry Psychology and Neuroscience, King's College London, London, UK
| | - Saima Afaq
- Institute of Public Health and Social Sciences, Khyber Medical University, Peshawar, Pakistan
- Department of Epidemiology and Biostatistics, Imperial College London, London, UK
| | | | - Yan Lin
- International Union Against Tuberculosis and Lung Disease, Beijing, China
| | - Rumana Huque
- Economics, University of Dhaka, Dhaka, Bangladesh
| | - Helen Elsey
- Department of Health Sciences, University of York, York, UK
- Hull York Medical School, Hull, UK
| | - Kamran Siddiqi
- Department of Health Sciences, University of York, York, UK
- Hull York Medical School, Hull, UK
| | - B Stubbs
- Department of Psychological Medicine, Institute of Psychiatry Psychology and Neuroscience, King's College London, London, UK
| | - Najma Siddiqi
- Department of Health Sciences, University of York, York, UK
- Hull York Medical School, Hull, UK
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12
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Ncube P, Bagheri B, Goosen WJ, Miller MA, Sampson SL. Evidence, Challenges, and Knowledge Gaps Regarding Latent Tuberculosis in Animals. Microorganisms 2022; 10:1845. [PMID: 36144447 PMCID: PMC9503773 DOI: 10.3390/microorganisms10091845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/08/2022] [Accepted: 09/09/2022] [Indexed: 01/30/2023] Open
Abstract
Mycobacterium bovis and other Mycobacterium tuberculosis complex (MTBC) pathogens that cause domestic animal and wildlife tuberculosis have received considerably less attention than M. tuberculosis, the primary cause of human tuberculosis (TB). Human TB studies have shown that different stages of infection can exist, driven by host-pathogen interactions. This results in the emergence of heterogeneous subpopulations of mycobacteria in different phenotypic states, which range from actively replicating (AR) cells to viable but slowly or non-replicating (VBNR), viable but non-culturable (VBNC), and dormant mycobacteria. The VBNR, VBNC, and dormant subpopulations are believed to underlie latent tuberculosis (LTB) in humans; however, it is unclear if a similar phenomenon could be happening in animals. This review discusses the evidence, challenges, and knowledge gaps regarding LTB in animals, and possible host-pathogen differences in the MTBC strains M. tuberculosis and M. bovis during infection. We further consider models that might be adapted from human TB research to investigate how the different phenotypic states of bacteria could influence TB stages in animals. In addition, we explore potential host biomarkers and mycobacterial changes in the DosR regulon, transcriptional sigma factors, and resuscitation-promoting factors that may influence the development of LTB.
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Affiliation(s)
| | | | | | | | - Samantha Leigh Sampson
- DSI/NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Department of Biomedical Sciences, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Francie Van Zijl Dr, Parow, Cape Town 7505, South Africa
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13
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Correia CN, McHugo GP, Browne JA, McLoughlin KE, Nalpas NC, Magee DA, Whelan AO, Villarreal-Ramos B, Vordermeier HM, Gormley E, Gordon SV, MacHugh DE. High-resolution transcriptomics of bovine purified protein derivative-stimulated peripheral blood from cattle infected with Mycobacterium bovis across an experimental time course. Tuberculosis (Edinb) 2022; 136:102235. [DOI: 10.1016/j.tube.2022.102235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 07/08/2022] [Accepted: 07/14/2022] [Indexed: 11/16/2022]
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14
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Roess AA, Hosh FM, Morton LC, Bestul N, Davis J, Carruth L. Associations between unpasteurised camel and other milk consumption, livestock ownership, and self-reported febrile and gastrointestinal symptoms among semi-pastoralists and pastoralists in the Somali Region of Ethiopia. Epidemiol Infect 2022; 151:e44. [PMID: 35499070 PMCID: PMC10052392 DOI: 10.1017/s0950268822000450] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Contact with livestock and consumption of unpasteurised dairy products are associated with an increased risk of zoonotic and foodborne infection, particularly among populations with close animal contact, including pastoralists and semi-pastoralists. However, there are limited data on disease risk factors among pastoralists and other populations where livestock herding, particularly of dromedary camels, is common. This cross-sectional study used a previously validated survey instrument to identify risk factors for self-reported symptoms. Adults (n = 304) were randomly selected from households (n = 171) in the Somali Region of Ethiopia, a region characterised by chronic food insecurity, population displacement, recurrent droughts and large semi-pastoralist and pastoralist populations. Multivariable logistic regression assessed associations between self-reported symptoms and type of milk consumed, controlling for demographics and human-animal interaction. Consumption of days-old unrefrigerated raw camel milk was significantly associated with symptoms in the 30 days prior to the survey (AOR = 5.07; 95% CI 2.41-10.66), after controlling for age, refugee status, sanitation, camel ownership and source of drinking water and accounting for clustering. Consumption of days-old unrefrigerated raw ruminant milk was significantly associated with symptoms (AOR = 4.00, 95% CI 1.27-12.58). Source of drinking water and camel ownership, a proxy for camel contact, were significantly associated with the outcome in each model. There were no significant associations between self-reported symptoms and fresh or soured animal milk consumption. Research is needed to identify pathogens and major routes of transmission. Tailored communication campaigns to encourage safe food preparation should also be considered.
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Affiliation(s)
- A A Roess
- College of Health and Human Services, George Mason University, Fairfax, Virginia, USA
- Milken Institute School of Public Health, George Washington University, Washington, DC, USA
| | - F M Hosh
- Public Health Consultant, Dire Dawa, Ethiopia
| | - L C Morton
- Milken Institute School of Public Health, George Washington University, Washington, DC, USA
| | - N Bestul
- Milken Institute School of Public Health, George Washington University, Washington, DC, USA
| | - J Davis
- Milken Institute School of Public Health, George Washington University, Washington, DC, USA
| | - L Carruth
- School of International Service, American University, Washington, DC, USA
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15
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Canhão-Dias M, Pires TM, Henriques R, Lopes DG, Madeira de Carvalho LM. Zoonoses as Important Causes of Hospital Admissions: A 15-Year Study in Portugal. PORTUGUESE JOURNAL OF PUBLIC HEALTH 2022. [DOI: 10.1159/000525301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
<b><i>Introduction:</i></b> Zoonoses represent 75% of emerging diseases. These diseases pose a permanent threat to human health and well-being and have the potential to become increasingly frequent due to habitat degradation; land-use changes; and increased global mobility of humans, animals, and animal products. The objective of this study was to investigate the impact ten zoonoses (brucellosis, cysticercosis, echinococcosis, leishmaniasis, leptospirosis, Lyme disease, rabies, toxoplasmosis, trichinellosis, and West Nile fever) had on human hospitalizations between 2002 and 2016 in Portuguese National Health Service hospitals. <b><i>Material and Methods:</i></b> A retrospective nationwide study was conducted using hospitalization records gathered by Administração Central do Sistema de Saúde from all Portuguese public hospitals. <b><i>Results:</i></b> Between 2002 and 2016, zoonoses caused 181,741 hospitalizations, a total number of hospitalization days of 2,033,125, and 10,611 deaths. The ten studied zoonoses caused 5,183 hospitalizations, 71,548 hospitalization days, and 176 deaths. All, except Lyme disease, showed a trend of decreasing numbers of hospitalizations. <b><i>Discussion and Conclusion:</i></b> The impact of each zoonosis in hospitalized patients regarding their age, sex, the severity of disease, and region can be attributed to the specific characteristics of each disease, regarding means of infection, pathogenicity, and geographic distribution. Hospitalizations caused by zoonoses have declined since the beginning of the century in Portugal. They still represent, however, relevant impacts on Public Health. The promotion of trans professional cooperation guided by One Health principles will further aid in the control of these important diseases.
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16
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Angkwanish T, Vernooij HJCM, Sirimalaisuwan A, Charernpan P, Nielen M, Rutten VPMG. Prevalence and Demographic Risk Factors of Mycobacterium tuberculosis Infections in Captive Asian Elephants ( Elephas maximus) Based on Serological Assays. Front Vet Sci 2021; 8:713663. [PMID: 34859080 PMCID: PMC8630616 DOI: 10.3389/fvets.2021.713663] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 10/06/2021] [Indexed: 02/05/2023] Open
Abstract
To address putative TB statuses of elephants and to identify and quantify potential demographic risk factors for TB, three ELISAs specific for different mycobacterial antigens (ESAT6, CFP10, MPB83) and the TB Stat-Pak assay were used as surrogate serological markers for TB infection in elephants. In view of the low number of animals of which the infected status could be confirmed (4 out of 708) Latent Class Analyses of TB serology test outcomes was used to predict the putative TB status of each of 708 elephants as positive (17.3%), inconclusive (48.7%), or negative (34%) when assessed on a population basis. Correlation between test performance of the individual assays was high between the ELISAs, but low with that of the TB Stat-Pak assay. Risk factors, assessed based on cut off values for each of the ELISAs determined by ROC analysis, included sex, BCS, age, working time, feed type, management system, camp size and region. Old age elephants were more likely to show a positive TB serology test outcome, than younger ones. Elephants working 7 h per day and the ones in good condition BCS (7-11) were less likely to be positive in TB serology testing. In addition, fewer animals in the large camp size (31-50 elephants) were found to be positive in ELISA tests, compared to elephants in the other camp sizes. In this study, the North region had the lowest percentages of elephants with positive TB test outcome, the West region and to a lesser extend the other regions showed clearly higher percentages of positive animals. Even though assays used in the present study have not been validated yet, results obtained showed promise as diagnostic or screening tests. For the diagnosis of animals suspected to be infected, the ELISA tests, once further optimized for the individual antigens, can be used in parallel. For screening of complete camps for presence or absence of infection, a single optimized ELISA test can be utilized.
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Affiliation(s)
- Taweepoke Angkwanish
- Department Biomolecular Health Sciences, Division Infectious Diseases and Immunology, Section Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands.,National Elephant Institute, Forest Industry Organization, Lampang, Thailand
| | - Hans J C M Vernooij
- Department Population Health Sciences, Division Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Anucha Sirimalaisuwan
- Center of Excellence in Elephant and Wildlife Research, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Pattara Charernpan
- Department Population Health Sciences, Division Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Mirjam Nielen
- National Elephant Research and Health Services, Department of Livestock Development, Bangkok, Thailand
| | - Victor P M G Rutten
- Department Biomolecular Health Sciences, Division Infectious Diseases and Immunology, Section Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands.,Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
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17
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Abstract
Animal tuberculosis (TB) is an emergent disease caused by Mycobacterium bovis, one of the animal-adapted ecotypes of the Mycobacterium tuberculosis complex (MTC). In this work, whole-genome comparative analyses of 70 M. bovis were performed to gain insights into the pan-genome architecture. The comparison across M. bovis predicted genome composition enabled clustering into the core- and accessory-genome components, with 2736 CDS for the former, while the accessory moiety included 3897 CDS, of which 2656 are restricted to one/two genomes only. These analyses predicted an open pan-genome architecture, with an average of 32 CDS added by each genome and show the diversification of discrete M. bovis subpopulations supported by both core- and accessory-genome components. The functional annotation of the pan-genome classified each CDS into one or several COG (Clusters of Orthologous Groups) categories, revealing ‘transcription’ (total average CDSs, n=258), ‘lipid metabolism and transport’ (n=242), ‘energy production and conversion’ (n=214) and ‘unknown function’ (n=876) as the most represented. The closer analysis of polymorphisms in virulence-related genes in a restrict group of M. bovis from a multi-host system enabled the identification of clade-monomorphic non-synonymous SNPs, illustrating clade-specific virulence landscapes and correlating with disease severity. This first comparative pan-genome study of a diverse collection of M. bovis encompassing all clonal complexes indicates a high percentage of accessory genes and denotes an open, dynamic non-conservative pan-genome structure, with high evolutionary potential, defying the canons of MTC biology. Furthermore, it shows that M. bovis can shape its virulence repertoire, either by acquisition and loss of genes or by SNP-based diversification, likely towards host immune evasion, adaptation and persistence.
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Affiliation(s)
- Ana C Reis
- Centre for Ecology, Evolution and Environmental Changes (cE3c), Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal.,Biosystems & Integrative Sciences Institute (BioISI), Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal
| | - Mónica V Cunha
- Centre for Ecology, Evolution and Environmental Changes (cE3c), Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal.,Biosystems & Integrative Sciences Institute (BioISI), Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal
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18
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A correlation of Mycobacterium bovis SB0134 infection between cattle and a wild boar (Sus Scrofa) in Campania region. Vet Anim Sci 2021; 13:100182. [PMID: 34141951 PMCID: PMC8182419 DOI: 10.1016/j.vas.2021.100182] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/29/2021] [Accepted: 04/29/2021] [Indexed: 11/23/2022] Open
Abstract
A case of Mycobacterium bovis infection is described in a death adult female wild boar in the province of Avellino, Campania Region (Southern Italy). The carcass was sent to the Istituto Zooprofilattico Sperimentale del Mezzogiorno (IZSM) of Portici, Naples, Italy, where postmortem examination was performed. At necropsy, a disseminated granulomatous infection was observed, with involvement of various lymph node districts, spleen and lungs. Therefore, all lymph nodes were collected, together with spleen and lung lesions, in order to carry out bacteriological and molecular analyses that confirmed an uncommon disseminated Mycobacterium bovis infection. Subsequently, an analysis of the spoligotype, performed by the National Reference Center of Mycobacterium bovis in Brescia (Northern Italy), resulted in the spoligotype SB0134, previously identified in bovine outbreaks in the same area where the wild boar was found.
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19
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McLoughlin KE, Correia CN, Browne JA, Magee DA, Nalpas NC, Rue-Albrecht K, Whelan AO, Villarreal-Ramos B, Vordermeier HM, Gormley E, Gordon SV, MacHugh DE. RNA-Seq Transcriptome Analysis of Peripheral Blood From Cattle Infected With Mycobacterium bovis Across an Experimental Time Course. Front Vet Sci 2021; 8:662002. [PMID: 34124223 PMCID: PMC8193354 DOI: 10.3389/fvets.2021.662002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 04/06/2021] [Indexed: 12/14/2022] Open
Abstract
Bovine tuberculosis, caused by infection with members of the Mycobacterium tuberculosis complex, particularly Mycobacterium bovis, is a major endemic disease affecting cattle populations worldwide, despite the implementation of stringent surveillance and control programs in many countries. The development of high-throughput functional genomics technologies, including RNA sequencing, has enabled detailed analysis of the host transcriptome to M. bovis infection, particularly at the macrophage and peripheral blood level. In the present study, we have analysed the transcriptome of bovine whole peripheral blood samples collected at −1 week pre-infection and +1, +2, +6, +10, and +12 weeks post-infection time points. Differentially expressed genes were catalogued and evaluated at each post-infection time point relative to the −1 week pre-infection time point and used for the identification of putative candidate host transcriptional biomarkers for M. bovis infection. Differentially expressed gene sets were also used for examination of cellular pathways associated with the host response to M. bovis infection, construction of de novo gene interaction networks enriched for host differentially expressed genes, and time-series analyses to identify functionally important groups of genes displaying similar patterns of expression across the infection time course. A notable outcome of these analyses was identification of a 19-gene transcriptional biosignature of infection consisting of genes increased in expression across the time course from +1 week to +12 weeks post-infection.
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Affiliation(s)
- Kirsten E McLoughlin
- Animal Genomics Laboratory, UCD School of Agriculture and Food Science, UCD College of Health and Agricultural Sciences, University College Dublin, Dublin, Ireland
| | - Carolina N Correia
- Animal Genomics Laboratory, UCD School of Agriculture and Food Science, UCD College of Health and Agricultural Sciences, University College Dublin, Dublin, Ireland
| | - John A Browne
- Animal Genomics Laboratory, UCD School of Agriculture and Food Science, UCD College of Health and Agricultural Sciences, University College Dublin, Dublin, Ireland
| | - David A Magee
- Animal Genomics Laboratory, UCD School of Agriculture and Food Science, UCD College of Health and Agricultural Sciences, University College Dublin, Dublin, Ireland
| | - Nicolas C Nalpas
- Animal Genomics Laboratory, UCD School of Agriculture and Food Science, UCD College of Health and Agricultural Sciences, University College Dublin, Dublin, Ireland
| | - Kevin Rue-Albrecht
- Animal Genomics Laboratory, UCD School of Agriculture and Food Science, UCD College of Health and Agricultural Sciences, University College Dublin, Dublin, Ireland
| | - Adam O Whelan
- TB Immunology and Vaccinology Team, Department of Bacteriology, Animal and Plant Health Agency, Weybridge, United Kingdom
| | - Bernardo Villarreal-Ramos
- TB Immunology and Vaccinology Team, Department of Bacteriology, Animal and Plant Health Agency, Weybridge, United Kingdom
| | - H Martin Vordermeier
- TB Immunology and Vaccinology Team, Department of Bacteriology, Animal and Plant Health Agency, Weybridge, United Kingdom
| | - Eamonn Gormley
- UCD School of Veterinary Medicine, UCD College of Health and Agricultural Sciences, University College Dublin, Dublin, Ireland
| | - Stephen V Gordon
- UCD School of Veterinary Medicine, UCD College of Health and Agricultural Sciences, University College Dublin, Dublin, Ireland.,UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | - David E MacHugh
- Animal Genomics Laboratory, UCD School of Agriculture and Food Science, UCD College of Health and Agricultural Sciences, University College Dublin, Dublin, Ireland.,UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
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Hall TJ, Mullen MP, McHugo GP, Killick KE, Ring SC, Berry DP, Correia CN, Browne JA, Gordon SV, MacHugh DE. Integrative genomics of the mammalian alveolar macrophage response to intracellular mycobacteria. BMC Genomics 2021; 22:343. [PMID: 33980141 PMCID: PMC8117616 DOI: 10.1186/s12864-021-07643-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 04/22/2021] [Indexed: 12/13/2022] Open
Abstract
Background Bovine TB (bTB), caused by infection with Mycobacterium bovis, is a major endemic disease affecting global cattle production. The key innate immune cell that first encounters the pathogen is the alveolar macrophage, previously shown to be substantially reprogrammed during intracellular infection by the pathogen. Here we use differential expression, and correlation- and interaction-based network approaches to analyse the host response to infection with M. bovis at the transcriptome level to identify core infection response pathways and gene modules. These outputs were then integrated with genome-wide association study (GWAS) data sets to enhance detection of genomic variants for susceptibility/resistance to M. bovis infection. Results The host gene expression data consisted of RNA-seq data from bovine alveolar macrophages (bAM) infected with M. bovis at 24 and 48 h post-infection (hpi) compared to non-infected control bAM. These RNA-seq data were analysed using three distinct computational pipelines to produce six separate gene sets: 1) DE genes filtered using stringent fold-change and P-value thresholds (DEG-24: 378 genes, DEG-48: 390 genes); 2) genes obtained from expression correlation networks (CON-24: 460 genes, CON-48: 416 genes); and 3) genes obtained from differential expression networks (DEN-24: 339 genes, DEN-48: 495 genes). These six gene sets were integrated with three bTB breed GWAS data sets by employing a new genomics data integration tool—gwinteR. Using GWAS summary statistics, this methodology enabled detection of 36, 102 and 921 prioritised SNPs for Charolais, Limousin and Holstein-Friesian, respectively. Conclusions The results from the three parallel analyses showed that the three computational approaches could identify genes significantly enriched for SNPs associated with susceptibility/resistance to M. bovis infection. Results indicate distinct and significant overlap in SNP discovery, demonstrating that network-based integration of biologically relevant transcriptomics data can leverage substantial additional information from GWAS data sets. These analyses also demonstrated significant differences among breeds, with the Holstein-Friesian breed GWAS proving most useful for prioritising SNPS through data integration. Because the functional genomics data were generated using bAM from this population, this suggests that the genomic architecture of bTB resilience traits may be more breed-specific than previously assumed. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-07643-w.
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Affiliation(s)
- Thomas J Hall
- Animal Genomics Laboratory, UCD School of Agriculture and Food Science, UCD College of Health and Agricultural Sciences, University College Dublin, Belfield, Dublin, D04 V1W8, Ireland
| | - Michael P Mullen
- Bioscience Research Institute, Athlone Institute of Technology, Dublin Road, Athlone, Westmeath, N37 HD68, Ireland
| | - Gillian P McHugo
- Animal Genomics Laboratory, UCD School of Agriculture and Food Science, UCD College of Health and Agricultural Sciences, University College Dublin, Belfield, Dublin, D04 V1W8, Ireland
| | - Kate E Killick
- Animal Genomics Laboratory, UCD School of Agriculture and Food Science, UCD College of Health and Agricultural Sciences, University College Dublin, Belfield, Dublin, D04 V1W8, Ireland.,Present address: Genuity Science, Cherrywood Business Park. Loughlinstown, Dublin, D18 K7W4, Ireland
| | - Siobhán C Ring
- Irish Cattle Breeding Federation, Highfield House, Shinagh, Bandon, Cork, P72 X050, Ireland
| | - Donagh P Berry
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Cork, P61 C996, Ireland
| | - Carolina N Correia
- Animal Genomics Laboratory, UCD School of Agriculture and Food Science, UCD College of Health and Agricultural Sciences, University College Dublin, Belfield, Dublin, D04 V1W8, Ireland
| | - John A Browne
- Animal Genomics Laboratory, UCD School of Agriculture and Food Science, UCD College of Health and Agricultural Sciences, University College Dublin, Belfield, Dublin, D04 V1W8, Ireland
| | - Stephen V Gordon
- UCD School of Veterinary Medicine, UCD College of Health and Agricultural Sciences, University College Dublin, Belfield, Dublin, D04 V1W8, Ireland.,UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin, D04 V1W8, Ireland
| | - David E MacHugh
- Animal Genomics Laboratory, UCD School of Agriculture and Food Science, UCD College of Health and Agricultural Sciences, University College Dublin, Belfield, Dublin, D04 V1W8, Ireland. .,UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin, D04 V1W8, Ireland.
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21
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Belay S, Giday M, Manyazewal T. Harnessing Clinical Trial Capacity to Mitigate Zoonotic Diseases: The Role of Expert Scientists in Ethiopia. Front Public Health 2021; 9:621433. [PMID: 33869126 PMCID: PMC8047130 DOI: 10.3389/fpubh.2021.621433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 03/11/2021] [Indexed: 11/15/2022] Open
Abstract
Background: The emergence and resurgence of zoonotic diseases have continued to be a major threat to global health and the economy. Developing countries are particularly vulnerable due to agricultural expansions and domestication of animals with humans. Scientifically sound clinical trials are important to find better ways to prevent, diagnose, and treat zoonotic diseases, while there is a lack of evidence to inform the clinical trials' capacity and practice in countries highly affected with the diseases. This study aimed to investigate expert scientists' perceptions and experiences in conducting clinical trials toward zoonotic diseases in Ethiopia. Methods: This study employed a descriptive, qualitative study design. It included major academic and research institutions in Ethiopia that had active engagements in veterinary and public health researches. It included the National Veterinary Institute, the National Animal Health Diagnostic and Investigation Center, the College of Veterinary Medicine at Addis Ababa University, the Ethiopian Public Health Institute, the Armauer Hansen Research Institute, and the College of Health Sciences at Addis Ababa University. In-depth interviews were conducted with expert scientists. Data were collected from October 2019 to April 2020. Data analysis was undertaken using open code 4.03 for qualitative data analysis. Results: Five major themes, with 18 sub-themes, emerged from the in-depth interviews. These were: challenges in the prevention, control, and treatment of zoonotic diseases; One Health approach to mitigate zoonotic diseases; personal and institutional experiences in conducting clinical trials on zoonotic diseases; barriers in conducting clinical trials toward zoonotic diseases; and strategies that promote conducting clinical trials on zoonotic diseases. Conducting clinical trials on zoonotic diseases in Ethiopia is hampered by a lack of clearly articulated ethics and regulatory frameworks, trial experts, financial resources, and good governance. Conclusion: In Ethiopia, conducting clinical trials on zoonotic diseases deserves due attention. Strengthening institutional and human resources capacity is a pre-condition to harness effective implementation of clinical trials on zoonotic diseases in the country. In Ethiopia where skilled human resource is scarce, One Health approach has the potential to form multidisciplinary teams to systematically improve clinical trials capacity and outcomes in the country.
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Affiliation(s)
- Senait Belay
- Center for Innovative Drug Development and Therapeutic Trials for Africa (CDT-Africa), College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia.,Faculty of Veterinary Medicine, Hawassa University, Hawassa, Ethiopia
| | - Mirutse Giday
- Center for Innovative Drug Development and Therapeutic Trials for Africa (CDT-Africa), College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia.,Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia
| | - Tsegahun Manyazewal
- Center for Innovative Drug Development and Therapeutic Trials for Africa (CDT-Africa), College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
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22
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Occupational exposure and challenges in tackling M. bovis at human-animal interface: a narrative review. Int Arch Occup Environ Health 2021; 94:1147-1171. [PMID: 33725176 PMCID: PMC7961320 DOI: 10.1007/s00420-021-01677-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 01/12/2021] [Indexed: 01/09/2023]
Abstract
Zoonotic tuberculosis caused by Mycobacterium bovis (M. bovis), a member of Mycobacterium tuberculosis complex (MTBC) has increasingly gathered attention as a public health risk, particularly in developing countries with higher disease prevalence. M. bovis is capable of infecting multiple hosts encompassing a number of domestic animals, in particular cattle as well as a broad range of wildlife reservoirs. Humans are the incidental hosts of M. bovis whereby its transmission to humans is primarily through the consumption of cattle products such as unpasteurized milk or raw meat products that have been contaminated with M. bovis or the transmission could be due to close contact with infected cattle. Also, the transmission could occur through aerosol inhalation of infective droplets or infected body fluids or tissues in the presence of wound from infected animals. The zoonotic risk of M. bovis in humans exemplified by miscellaneous studies across different countries suggested the risk of occupational exposure towards M. bovis infection, especially those animal handlers that have close and unreserved contact with cattle and wildlife populations These animal handlers comprising of livestock farmers, abattoir workers, veterinarians and their assistants, hunters, wildlife workers as well as other animal handlers are at different risk of contracting M. bovis infection, depending on the nature of their jobs and how close is their interaction with infected animals. It is crucial to identify the underlying transmission risk factors and probable transmission pathways involved in the zoonotic transmission of M. bovis from animals to humans for better designation and development of specific preventive measures and guidelines that could reduce the risk of transmission and to protect these different occupational-related/populations at risk. Effective control and disease management of zoonotic tuberculosis caused by M. bovis in humans are also hindered by various challenges and factors involved at animal–human interface. A closer look into factors affecting proper disease control and management of M. bovis are therefore warranted. Hence, in this narrative review, we have gathered a number of different studies to highlight the risk of occupational exposure to M. bovis infection and addressed the limitations and challenges underlying this context. This review also shed lights on various components and approaches in tackling M. bovis infection at animal–human interface.
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23
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Kock R, Michel AL, Yeboah-Manu D, Azhar EI, Torrelles JB, Cadmus SI, Brunton L, Chakaya JM, Marais B, Mboera L, Rahim Z, Haider N, Zumla A. Zoonotic Tuberculosis - The Changing Landscape. Int J Infect Dis 2021; 113 Suppl 1:S68-S72. [PMID: 33713812 PMCID: PMC8672060 DOI: 10.1016/j.ijid.2021.02.091] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/22/2021] [Accepted: 02/23/2021] [Indexed: 02/06/2023] Open
Abstract
Globally, Zoonotic TB remains a poorly monitored and an important unaddressed burden. Zoonotic TB primarily from consumption M. bovis contaminated unpasteurized dairy products. Novel zoonotic TB strains (e.g. M. orygis), warrants more attention and intervention. Early detection and control of M. bovis in cattle remains the mainstay of reducing zoonotic TB risk. Reverse zoonosis to animals of treatment resistant TB strains is a threat to eliminating TB.
Despite slow reductions in the annual burden of active human tuberculosis (TB) cases, zoonotic TB (zTB) remains a poorly monitored and an important unaddressed global problem. There is a higher incidence in some regions and countries, especially where close association exists between growing numbers of cattle (the major source of Mycobacterium bovis) and people, many suffering from poverty, and where dairy products are consumed unpasteurised. More attention needs to be focused on possible increased zTB incidence resulting from growth in dairy production globally and increased demand in low income countries in particular. Evidence of new zoonotic mycobacterial strains in South Asia and Africa (e.g. M. orygis), warrants urgent assessment of prevalence, potential drivers and risk in order to develop appropriate interventions. Control of M. bovis infection in cattle through detect and cull policies remain the mainstay of reducing zTB risk, whilst in certain circumstances animal vaccination is proving beneficial. New point of care diagnostics will help to detect animal infections and human cases. Given the high burden of human tuberculosis (caused by M. tuberculosis) in endemic areas, animals are affected by reverse zoonosis, including multi-drug resistant strains. This, may create drug resistant reservoirs of infection in animals. Like COVID-19, zTB is evolving in an ever-changing global landscape.
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Affiliation(s)
- Richard Kock
- Pathobiology and Population Sciences Department, Royal Veterinary College, Hatfield, AL9 7TA, UK.
| | - Anita L Michel
- Department of Veterinary Tropical Diseases, Bovine Tuberculosis and Brucellosis Research Programme, Faculty of Veterinary Sciences, University of Pretoria, Onderstepoort, Pretoria, South Africa.
| | - Dorothy Yeboah-Manu
- Bacteriology Department, Noguchi Memorial Institute for Medical Research, University of Ghana, Ghana.
| | - Esam I Azhar
- Special Infectious Agents Unit, King Fahd Medical Research Center, and Medical Laboratory Technology Department, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia.
| | - Jordi B Torrelles
- Population Health Program, Texas Biomedical Research Institute, San Antonio, TX, USA.
| | - Simeon I Cadmus
- Department of Veterinary Public Health and Preventive Medicine, University of Ibadan, Ibadan, Nigeria.
| | - Lucy Brunton
- Pathobiology and Population Sciences Department, Royal Veterinary College, Hatfield, AL9 7TA, UK.
| | - Jeremiah M Chakaya
- Department of Medicine, Therapeutics, Dermatology and Psychiatry, Kenyatta University, Nairobi, Kenya; Department of Clinical Sciences, Liverpool School of Tropical Medicine UK.
| | - Ben Marais
- Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia; Marie Bashir Institute for Infectious Diseases and Biosecurity, Sydney, NSW, Australia.
| | - Leonard Mboera
- SACIDS Foundation for One Health, Sokoine University of Agriculture, Morogoro, Tanzania.
| | - Zeaur Rahim
- International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Mohakhali, Dhaka, 1212, Bangladesh.
| | - Najmul Haider
- Pathobiology and Population Sciences Department, Royal Veterinary College, Hatfield, AL9 7TA, UK.
| | - Alimuddin Zumla
- Division of Infection and Immunity, University College London, London, UK; National Institute for Health Research Biomedical Research Centre, University College London Hospitals National Health Service Foundation Trust, London, UK.
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Long-term molecular surveillance provides clues on a cattle origin for Mycobacterium bovis in Portugal. Sci Rep 2020; 10:20856. [PMID: 33257726 PMCID: PMC7705689 DOI: 10.1038/s41598-020-77713-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 11/17/2020] [Indexed: 11/08/2022] Open
Abstract
Animal tuberculosis (TB), caused by Mycobacterium bovis, is maintained in Portugal in a multi-host system, with cattle, red deer and wild boar, playing a central role. However, the ecological processes driving transmission are not understood. The main aim of this study was thus to contribute to the reconstruction of the spatiotemporal history of animal TB and to refine knowledge on M. bovis population structure in order to inform novel intervention strategies. A collection of 948 M. bovis isolates obtained during long-term surveillance (2002–2016, 15 years) of cattle (n = 384), red deer (n = 303) and wild boar (n = 261), from the main TB hotspot areas, was characterized by spoligotyping and 8 to 12-loci MIRU-VNTR. Spoligotyping identified 64 profiles and MIRU-VNTR distinguished 2 to 36 subtypes within each spoligotype, enabling differentiation of mixed or clonal populations. Common genotypic profiles within and among livestock and wildlife in the same spatiotemporal context highlighted epidemiological links across hosts and regions, as for example the SB0119-M205 genotype shared by cattle in Beja district or SB0121-M34 shared by the three hosts in Castelo Branco and Beja districts. These genomic data, together with metadata, were integrated in a Bayesian inference framework, identifying five ancestral M. bovis populations. The phylogeographic segregation of M. bovis in specific areas of Portugal where the disease persists locally is postulated. Concurrently, robust statistics indicates an association of the most probable ancient population with cattle and Beja, providing a clue on the origin of animal TB epidemics. This relationship was further confirmed through a multinomial probability model that assessed the influence of host species on spatiotemporal clustering. Two significant clusters were identified, one that persisted between 2004 and 2010, in Beja district, with Barrancos county at the centre, overlapping the central TB core area of the Iberian Peninsula, and highlighting a significant higher risk associated to cattle. The second cluster was predominant in the 2012–2016 period, holding the county Rosmaninhal at the centre, in Castelo Branco district, for which wild boar contributed the most in relative risk. These results provide novel quantitative insights beyond empirical perceptions, that may inform adaptive TB control choices in different regions.
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Cho YS, Lee SE, Woo JT, Oh J, Choi HW, Kwon JH, Kim JT, Ha G, Jung S. Comparing recombinant MPB70/SahH and native 20-kDa protein for detecting bovine tuberculosis using ELISA. J Vet Med Sci 2020; 82:1631-1638. [PMID: 33055466 PMCID: PMC7719871 DOI: 10.1292/jvms.20-0422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Bovine tuberculosis (bTB) is a zoonosis caused by Mycobacterium bovis. Test-and-cull protocols and gross pathological examinations of abattoir
animals as well as milk pasteurization have been implemented to prevent the spread of tuberculosis from animals to humans worldwide. Despite the importance of
precise and rapid diagnostic tests, conventional methods including intradermal skin tests and γ-interferon assays are limited by the high rate of false-negative
results for cattle in the late infectious stage and due to laborious and time-consuming procedures. Therefore, antibody detection methods such as enzyme-linked
immunosorbent assay (ELISA) are urgently needed to supplement the established approaches and expand the diagnostic window. This study was conducted to develop a
bTB ELISA by evaluating recombinant and native proteins and various assay parameters. We produced recombinant MPB70 and SahH (M70S) and a native 20-kDa protein
(20K) and optimized the ELISA protocol. The 20K ELISA showed 94.4% sensitivity and 98.2% specificity with an optimal sample-to-positive ratio cut-off of 0.531.
The sensitivity and specificity of M70S ELISA were 94.4% and 97.3%, respectively, with an optimal sample-to-negative ratio cut-off of 1.696. Both assays showed
acceptable diagnostic efficiency and could be used for bTB diagnosis in combination with established methods for herd screening and to expand the diagnostic
window.
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Affiliation(s)
- Yun Sang Cho
- Bacterial Disease Division, Department of Animal and Plant Health Research, Animal and Plant Quarantine Agency, Gimcheon 39660, Republic of Korea
| | - Sang Eun Lee
- Bacterial Disease Division, Department of Animal and Plant Health Research, Animal and Plant Quarantine Agency, Gimcheon 39660, Republic of Korea
| | - Jong-Tae Woo
- Gyeonggi Province Veterinary Service Center, Suwon 16381, Republic of Korea
| | - Jinsik Oh
- Bionote Co., Ltd., Hwaseong 18449, Republic of Korea
| | - Hwan Won Choi
- ChoongAng Vaccine Laboratory, Daejeon 34055, Republic of Korea
| | - Jin Hyeok Kwon
- Bacterial Disease Division, Department of Animal and Plant Health Research, Animal and Plant Quarantine Agency, Gimcheon 39660, Republic of Korea
| | - Jeong-Tae Kim
- Gyeonggi Province Veterinary Service Center, Suwon 16381, Republic of Korea
| | - Gunwoo Ha
- Bionote Co., Ltd., Hwaseong 18449, Republic of Korea
| | - Sukchan Jung
- Bacterial Disease Division, Department of Animal and Plant Health Research, Animal and Plant Quarantine Agency, Gimcheon 39660, Republic of Korea
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Luciano SA, Roess A. Human zoonotic tuberculosis and livestock exposure in low- and middle-income countries: A systematic review identifying challenges in laboratory diagnosis. Zoonoses Public Health 2020; 67:97-111. [PMID: 31919980 PMCID: PMC7027859 DOI: 10.1111/zph.12684] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 09/18/2019] [Accepted: 12/11/2019] [Indexed: 11/30/2022]
Abstract
BACKGROUND Zoonotic tuberculosis (zTB) accounts for 1.4% of the global tuberculosis burden, with the largest disease burden in low- and middle-income countries (LMICs). These populations have increased exposure to zTB due to livestock rearing practices and raw dairy consumption. This qualitative systematic literature review evaluates the quality of the literature that examines the association between human zTB in LMICs and frequent exposure to livestock and livestock products and summarizes current gaps in laboratory detection methods. METHODS The Navigation Guide, a systematic review framework utilized to assess environmental health exposures, was used to conduct this literature review. Peer-reviewed research articles were selected and evaluated for risk of bias and quality of evidence. Only studies conducted in LMICs that mentioned livestock or livestock product exposure and had a confirmed diagnosis were eligible. RESULTS Fifteen studies met the inclusion criteria. Reported prevalence of human zTB ranged from 0% to 28%, with cattle and raw dairy the primary exposures. All confirmed zTB cases were Mycobacterium bovis. Eight of the 15 studies included livestock sampling, predominantly cattle and reported prevalence of zTB between 0% and 23%. Laboratory methods used included nearly a dozen different culture methods and a variety of molecular methods, some of which are not appropriate for zTB. CONCLUSIONS This review revealed the need for appropriate and standardized laboratory diagnostic methods, and large prospective studies of at-risk populations to determine exposures that lead to an increased risk of tuberculosis conversion/infection to better understand the true burden of disease. Standardized, easy to implement laboratory diagnostics is an imperative focus for this scientific field to better identify the burden of zTB. Future studies pairing livestock and human subjects will allow better characterization of the high zTB transmission areas for targeted control and prevention programmes.
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Affiliation(s)
- Sarah Anne Luciano
- Department of Environmental and Occupational HealthThe George Washington UniversityWashingtonDistrict of Columbia
| | - Amira Roess
- Department of Global and Community HealthGeorge Mason UniversityFairfaxVirginia
- Department of Global HealthThe George Washington UniversityWashingtonDistrict of Columbia
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