TB prevalence in Zimbabwe: a national cross-sectional survey, 2014
BACKGROUND: We conducted the first national TB prevalence survey to provide accurate estimates of bacteriologically confirmed pulmonary TB disease among adults aged ≥15 years in 2014.METHODS: A TB symptoms screen and chest X-ray (CXR) were used to identify presumptive TB cases who submitted two sput...
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International Union Against Tuberculosis and Lung Disease
2023
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| Online Access: | https://cris.library.msu.ac.zw//handle/11408/5485 |
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| author | M Chipinduro C Timire J Chirenda R Matambo E Munemo B Makamure A F Nhidza W Tinago V Chikwasha M Ngwenya J Mutsvangwa J Z Metcalfe C Sandy |
| author2 | Department of Pathology, Faculty of Medicine and Health Sciences (FMHS), Midlands State University, Gweru, Zimbabwe |
| author_facet | Department of Pathology, Faculty of Medicine and Health Sciences (FMHS), Midlands State University, Gweru, Zimbabwe M Chipinduro C Timire J Chirenda R Matambo E Munemo B Makamure A F Nhidza W Tinago V Chikwasha M Ngwenya J Mutsvangwa J Z Metcalfe C Sandy |
| author_sort | M Chipinduro |
| collection | DSpace |
| description | BACKGROUND: We conducted the first national TB prevalence survey to provide accurate estimates of bacteriologically confirmed pulmonary TB disease among adults aged ≥15 years in 2014.METHODS: A TB symptoms screen and chest X-ray (CXR) were used to identify presumptive TB cases who submitted two sputum samples for smear microscopy, liquid and solid culture. Bacteriological confirmation included acid-fast bacilli smear positivity confirmed using Xpert® MTB/RIF and/or culture. Prevalence estimates were calculated using random effects logistic regression with multiple imputations and inverse probability weighting.RESULTS: Of 43,478 eligible participants, 33,736 (78%) were screened; of these 5,820 (17%) presumptive cases were identified. There were 107 (1.9%) bacteriologically confirmed TB cases, of which 23 (21%) were smear-positive. The adjusted prevalences of smear-positive and bacteriologically confirmed TB disease were respectively 82/100,000 population (95% CI 47-118/100,000) and 344/100,000 (95% CI 268-420/100,000), with an overall all-ages, all-forms TB prevalence of 275/100,000 population (95% CI 217-334/100,000). TB prevalence was higher in males, and age groups 35-44 and ≥65 years. CXR identified 93/107 (87%) cases vs. 39/107 (36%) using the symptom screen.CONCLUSION: Zimbabwe TB disease prevalence has decreased relative to prior estimates, possibly due to increased antiretroviral therapy coverage and successful national TB control strategies. Continued investments in TB diagnostics for improved case detection are required. |
| format | research article |
| id | ir-11408-5485 |
| institution | My University |
| language | English |
| publishDate | 2023 |
| publisher | International Union Against Tuberculosis and Lung Disease |
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| spelling | ir-11408-54852023-03-29T06:38:55Z TB prevalence in Zimbabwe: a national cross-sectional survey, 2014 M Chipinduro C Timire J Chirenda R Matambo E Munemo B Makamure A F Nhidza W Tinago V Chikwasha M Ngwenya J Mutsvangwa J Z Metcalfe C Sandy Department of Pathology, Faculty of Medicine and Health Sciences (FMHS), Midlands State University, Gweru, Zimbabwe International Union Against Tuberculosis and Lung Disease (The Union), Paris, France, National TB Control Programme, Ministry of Health and Child Care, Harare, Zimbabwe. Department of Community Medicine, FMHS, University of Zimbabwe, Harare, Zimbabwe. Biomedical Research and Training Institute, Harare, Zimbabwe. National Microbiology Reference Laboratory, Harare, Zimbabwe. Biomedical Research and Training Institute, Harare, Zimbabwe. Biomedical Research and Training Institute, Harare, Zimbabwe. Department of Community Medicine, FMHS, University of Zimbabwe, Harare, Zimbabwe, School of Medicine, University College Dublin, Dublin, Ireland. Department of Community Medicine, FMHS, University of Zimbabwe, Harare, Zimbabwe. World Health Organisation, Harare Country Office, Zimbabwe. Biomedical Research and Training Institute, Harare, Zimbabwe. Division of Pulmonary and Critical Care Medicine, Zuckerberg San Francisco General Hospital and Trauma Center, University of California, San Francisco, CA, USA. National TB Control Programme, Ministry of Health and Child Care, Harare, Zimbabwe. TB prevalence TB disease TB Zimbabwe BACKGROUND: We conducted the first national TB prevalence survey to provide accurate estimates of bacteriologically confirmed pulmonary TB disease among adults aged ≥15 years in 2014.METHODS: A TB symptoms screen and chest X-ray (CXR) were used to identify presumptive TB cases who submitted two sputum samples for smear microscopy, liquid and solid culture. Bacteriological confirmation included acid-fast bacilli smear positivity confirmed using Xpert® MTB/RIF and/or culture. Prevalence estimates were calculated using random effects logistic regression with multiple imputations and inverse probability weighting.RESULTS: Of 43,478 eligible participants, 33,736 (78%) were screened; of these 5,820 (17%) presumptive cases were identified. There were 107 (1.9%) bacteriologically confirmed TB cases, of which 23 (21%) were smear-positive. The adjusted prevalences of smear-positive and bacteriologically confirmed TB disease were respectively 82/100,000 population (95% CI 47-118/100,000) and 344/100,000 (95% CI 268-420/100,000), with an overall all-ages, all-forms TB prevalence of 275/100,000 population (95% CI 217-334/100,000). TB prevalence was higher in males, and age groups 35-44 and ≥65 years. CXR identified 93/107 (87%) cases vs. 39/107 (36%) using the symptom screen.CONCLUSION: Zimbabwe TB disease prevalence has decreased relative to prior estimates, possibly due to increased antiretroviral therapy coverage and successful national TB control strategies. Continued investments in TB diagnostics for improved case detection are required. 26 1 57 64 2023-03-29T06:38:54Z 2023-03-29T06:38:54Z 2022-01-01 research article https://cris.library.msu.ac.zw//handle/11408/5485 10.5588/ijtld.21.0341 en International Journal of Tuberculosis and Lung Disease (IJTLD) 1815-7920 open International Union Against Tuberculosis and Lung Disease |
| spellingShingle | TB prevalence TB disease TB Zimbabwe M Chipinduro C Timire J Chirenda R Matambo E Munemo B Makamure A F Nhidza W Tinago V Chikwasha M Ngwenya J Mutsvangwa J Z Metcalfe C Sandy TB prevalence in Zimbabwe: a national cross-sectional survey, 2014 |
| title | TB prevalence in Zimbabwe: a national cross-sectional survey, 2014 |
| title_full | TB prevalence in Zimbabwe: a national cross-sectional survey, 2014 |
| title_fullStr | TB prevalence in Zimbabwe: a national cross-sectional survey, 2014 |
| title_full_unstemmed | TB prevalence in Zimbabwe: a national cross-sectional survey, 2014 |
| title_short | TB prevalence in Zimbabwe: a national cross-sectional survey, 2014 |
| title_sort | tb prevalence in zimbabwe: a national cross-sectional survey, 2014 |
| topic | TB prevalence TB disease TB Zimbabwe |
| url | https://cris.library.msu.ac.zw//handle/11408/5485 |
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