Journal Article > ResearchFull Text
IJTLD OPEN. 1 August 2024; Volume 1 (Issue 8); 344-348.; DOI:10.5588/ijtldopen.24.0272
Moe S, Asozoda M, Aung A, Dusmatova Z, Akintore F, et al.
IJTLD OPEN. 1 August 2024; Volume 1 (Issue 8); 344-348.; DOI:10.5588/ijtldopen.24.0272
BACKGROUND
The rate of TB in prison institutions is estimated to be 23 times higher than in the general population. Limited documentation exists regarding TB screening in Tajikistan's prisons. This study aims to report findings from a TB screening conducted in prison facilities in Tajikistan.
METHODS
A systematic TB screening was conducted between July 2022 and September 2023, following a locally adapted algorithm based on WHO recommendations. The screening yield was calculated as the proportion of confirmed TB cases, with categorical variables compared using a χ2 test.
RESULTS
A total of 7,223 screenings were conducted, identifying 31 TB cases, including 17 drug-susceptible TB cases, eight drug-resistant TB cases, and six clinically diagnosed cases. The overall screening yield was 0.43%. Notably, the screening yield was 3.4% among individuals with at least one TB symptom and 0.03% among those without TB symptoms (P < 0.001).
CONCLUSION
The identified rate of TB in these prisons is five times higher than in the general population. Symptomatic individuals had a higher likelihood of TB diagnosis, and using chest X-rays significantly improved screening yield. We recommend increasing the capacity for chest X-ray testing to enhance TB prevention and control within prison settings.
Journal Article > ResearchFull Text
Int J Tuberc Lung Dis. 1 October 2023; Volume 27 (Issue 10); 748-753.; DOI:10.5588/ijtld.23.0066
Rekart ML, Aung A, Cullip T, Mulanda WK, Mun L, et al.
Int J Tuberc Lung Dis. 1 October 2023; Volume 27 (Issue 10); 748-753.; DOI:10.5588/ijtld.23.0066
BACKGROUND
Tajikistan has a high burden of rifampicin-resistant TB (RR-TB), with 2,700 new cases estimated for 2021 (28/100,000 population). TB is spread among household members through close interaction and children exposed through household contact progress to disease rapidly and frequently.
METHODS
We retrospectively analysed programmatic data from household contact tracing in Dushanbe over 50 months. We calculated person-years of follow-up, contact tracing yield, number needed to screen (NNS) and number needed to test (NNT) to find one new case, and time to diagnosis.
RESULTS
We screened 6,654 household contacts of 830 RR-TB index cases; 47 new RR-TB cases were detected, 43 in Year 1 and 4 in Years 2 or 3. Ten were aged <5 years; 46/47 had TB symptoms, 34/45 had chest radiographs consistent with TB, 11/35 were Xpert Ultra-positive, 29/32 were tuberculin skin test-positive and 28/47 had positive TB culture and phenotypic drug susceptibility results. The NNS to find one RR-TB case was 141.57 and the NNT was 34.49. The yields for different types of contacts were as follows: 0.7% for screened contacts, 2.9% for tested contacts, 17.0% for symptomatic contacts and 12.1% for symptomatic contacts aged below 5 years.
CONCLUSION
RR-TB household contact tracing was feasible and productive in Tajikistan, a low middle-income country with an inefficient healthcare delivery system.
Tajikistan has a high burden of rifampicin-resistant TB (RR-TB), with 2,700 new cases estimated for 2021 (28/100,000 population). TB is spread among household members through close interaction and children exposed through household contact progress to disease rapidly and frequently.
METHODS
We retrospectively analysed programmatic data from household contact tracing in Dushanbe over 50 months. We calculated person-years of follow-up, contact tracing yield, number needed to screen (NNS) and number needed to test (NNT) to find one new case, and time to diagnosis.
RESULTS
We screened 6,654 household contacts of 830 RR-TB index cases; 47 new RR-TB cases were detected, 43 in Year 1 and 4 in Years 2 or 3. Ten were aged <5 years; 46/47 had TB symptoms, 34/45 had chest radiographs consistent with TB, 11/35 were Xpert Ultra-positive, 29/32 were tuberculin skin test-positive and 28/47 had positive TB culture and phenotypic drug susceptibility results. The NNS to find one RR-TB case was 141.57 and the NNT was 34.49. The yields for different types of contacts were as follows: 0.7% for screened contacts, 2.9% for tested contacts, 17.0% for symptomatic contacts and 12.1% for symptomatic contacts aged below 5 years.
CONCLUSION
RR-TB household contact tracing was feasible and productive in Tajikistan, a low middle-income country with an inefficient healthcare delivery system.
Journal Article > ResearchFull Text
Microbiol Spectr. 9 January 2023; Volume 11 (Issue 1); DOI:10.1128/spectrum.03698-22
Rekart ML, Mun L, Aung A, Gomez D, Mulanda WK, et al.
Microbiol Spectr. 9 January 2023; Volume 11 (Issue 1); DOI:10.1128/spectrum.03698-22
We report the findings of a prospective laboratory diagnostic accuracy study to evaluate the sensitivity, specificity, and predictive values of the Xpert MTB/RIF Ultra assay for Mycobacterium tuberculosis detection in fresh stool specimens from children under 15?years of age with confirmed tuberculosis (TB) disease from Dushanbe, Tajikistan. Six hundred eighty-eight (688) participants were enrolled from April 2019 to October 2021. We identified 16 participants (2.3%) with confirmed TB disease, defined as =1 TB sign/symptom plus microbiologic confirmation. With the Xpert MTB/RIF Ultra assay for stool, we found a sensitivity of 68.8% (95% CI, 46.0 to 91.5) and a specificity of 98.7% (95% CI, 97.8 to 99.5) in confirmed TB disease. Our results are comparable to other published studies; however, our cohort was larger and our confirmed TB disease rate lower than most. We also demonstrated that this assay was feasible to implement in a centralized hospital laboratory in a low-middle-income Central Asian country. However, we encountered obstacles such as lack of staffing, material ruptures, outdated government protocols, and decreased case presentation due to COVID-19. We found eight patients whose only positive test was an Xpert Ultra stool assay. None needed treatment during the study; however, three were treated later, suggesting such cases require close observation. Our report is the first from Central Asia and one of a few from a low-middle-income country. We believe our study demonstrates the generalizability of the Xpert MTB/RIF Ultra assay on fresh stool specimens from children and provides further evidence supporting WHO’s approval of this diagnostic strategy.
IMPORTANCE
The importance of this report is that it provides further support for WHO’s recent recommendation that fresh stool is an acceptable sample for GeneXpert TB testing in children, especially small children who often cannot produce an adequate sputum sample. Diagnosing TB in this age group is difficult, and many cases are missed, leading to unacceptable rates of TB illness and death. In our large cohort of children from Dushanbe, Tajikistan, the GeneXpert stool test was positive in 69% of proven cases of TB, and there were very few false-positive tests. We also showed that this diagnostic strategy was feasible to implement in a low-middle-income country with an inefficient health care delivery system. We hope that many more programs will adopt this form of diagnosing TB in children.
IMPORTANCE
The importance of this report is that it provides further support for WHO’s recent recommendation that fresh stool is an acceptable sample for GeneXpert TB testing in children, especially small children who often cannot produce an adequate sputum sample. Diagnosing TB in this age group is difficult, and many cases are missed, leading to unacceptable rates of TB illness and death. In our large cohort of children from Dushanbe, Tajikistan, the GeneXpert stool test was positive in 69% of proven cases of TB, and there were very few false-positive tests. We also showed that this diagnostic strategy was feasible to implement in a low-middle-income country with an inefficient health care delivery system. We hope that many more programs will adopt this form of diagnosing TB in children.
Journal Article > LetterFull Text
Int J Tuberc Lung Dis. 1 August 2022; Volume 26 (Issue 8); 792-794.; DOI:10.5588/ijtld.22.0168
Rekart ML, Morshed T, Mulanda WK, Klieascikova J, Sitali N, et al.
Int J Tuberc Lung Dis. 1 August 2022; Volume 26 (Issue 8); 792-794.; DOI:10.5588/ijtld.22.0168
Conference Material > Video
Croft LA
MSF Scientific Days International 2022. 7 June 2022; DOI:10.57740/rfm5-5s75
Conference Material > Abstract
Croft LA, Puig-García M, Silver C, Pearlman J, Stellmach DUS, et al.
MSF Scientific Days International 2022. 9 May 2022; DOI:10.57740/b641-d608
INTRODUCTION
Between 2020 and 2021, MSF’s social sciences team designed and supported implementation of qualitative assessments to better understand community-level outbreak responses and well-being in the context of Covid-19. Assessments were conducted in seven sites, specifically Nigeria, Sierra Leone, Chad, Iraq, Tajikistan, Syria, and Somaliland. Although a single protocol was designed and followed, each site was unique in terms of its setting (e.g. camp, conflict, urban, or rural), who implemented assessments (e.g. field epidemiologists, health promotion staff), timing of implementation (early phase of the pandemic versus late phase), and community involvement. Here we present a synthesis of the assessments to inform future public health responses.
METHODS
Synthesis involved secondary analysis of qualitative reports over five iterative phases. Phase 1 involved in-depth reading of each report, during which analytic annotation and note-taking took place. In Phase 2, each report was coded inductively. In Phase 3, codes were reviewed, defined, and clustered into initial categories and themes. Phase 4 involved reviewing and refining codes, categories, and themes, and establishing connections. In Phase 5, synthesis findings were organised and written up. The process was managed using the software ATLAS.ti.
ETHICS
This synthesis is an a posteriori analysis of secondary data. Ethics approval for primary data was granted by officials in Nigeria, Sierra Leone, Chad, Iraq, Tajikistan, Syria, and Somaliland and the MSF Ethics Review Board.
RESULTS
Overall 138, people participated in the assessments, of which 21 (15%) were women. Participants included health workers, community members, traditional healers, chiefs, young people, women’s leaders and local staff. Four themes were identified: 1) exacerbation of pre-existing vulnerabilities and inequalities; 2) disruption of coping mechanisms; 3) awareness of the risks of Covid-19; 4) community as a public health enabler. The pandemic was seen to magnify existing social inequalities and overall health burden. Public health measures to control the spread of Covid-19 often disrupted community coping mechanisms by causing fear of separation and practical challenges around compliance. Awareness of the risks of Covid-19 and understanding of prevention measures were high, with socio-economic costs of compliance relying on external funding and relief. A community led intervention for effective public health controls varied between sites, depending on previous outbreak experiences (e.g. Ebola and tuberculosis), and/or settings experiencing protracted conflict (e.g. Syria, and Iraq).
CONCLUSION
Our synthesis illustrates syndemic effects of the pandemic. From an operational perspective, there is a need to diversify humanitarian, social, and health interventions, and strengthen approaches to working with communities to identify how best to take forward public health measures in humanitarian settings.
CONFLICTS OF INTEREST
None declared.
Between 2020 and 2021, MSF’s social sciences team designed and supported implementation of qualitative assessments to better understand community-level outbreak responses and well-being in the context of Covid-19. Assessments were conducted in seven sites, specifically Nigeria, Sierra Leone, Chad, Iraq, Tajikistan, Syria, and Somaliland. Although a single protocol was designed and followed, each site was unique in terms of its setting (e.g. camp, conflict, urban, or rural), who implemented assessments (e.g. field epidemiologists, health promotion staff), timing of implementation (early phase of the pandemic versus late phase), and community involvement. Here we present a synthesis of the assessments to inform future public health responses.
METHODS
Synthesis involved secondary analysis of qualitative reports over five iterative phases. Phase 1 involved in-depth reading of each report, during which analytic annotation and note-taking took place. In Phase 2, each report was coded inductively. In Phase 3, codes were reviewed, defined, and clustered into initial categories and themes. Phase 4 involved reviewing and refining codes, categories, and themes, and establishing connections. In Phase 5, synthesis findings were organised and written up. The process was managed using the software ATLAS.ti.
ETHICS
This synthesis is an a posteriori analysis of secondary data. Ethics approval for primary data was granted by officials in Nigeria, Sierra Leone, Chad, Iraq, Tajikistan, Syria, and Somaliland and the MSF Ethics Review Board.
RESULTS
Overall 138, people participated in the assessments, of which 21 (15%) were women. Participants included health workers, community members, traditional healers, chiefs, young people, women’s leaders and local staff. Four themes were identified: 1) exacerbation of pre-existing vulnerabilities and inequalities; 2) disruption of coping mechanisms; 3) awareness of the risks of Covid-19; 4) community as a public health enabler. The pandemic was seen to magnify existing social inequalities and overall health burden. Public health measures to control the spread of Covid-19 often disrupted community coping mechanisms by causing fear of separation and practical challenges around compliance. Awareness of the risks of Covid-19 and understanding of prevention measures were high, with socio-economic costs of compliance relying on external funding and relief. A community led intervention for effective public health controls varied between sites, depending on previous outbreak experiences (e.g. Ebola and tuberculosis), and/or settings experiencing protracted conflict (e.g. Syria, and Iraq).
CONCLUSION
Our synthesis illustrates syndemic effects of the pandemic. From an operational perspective, there is a need to diversify humanitarian, social, and health interventions, and strengthen approaches to working with communities to identify how best to take forward public health measures in humanitarian settings.
CONFLICTS OF INTEREST
None declared.
Conference Material > Poster
Mun L, Gomez D, Sitali N, Rajabzoda A, Azamova S, et al.
MSF Scientific Days International 2022. 9 May 2022; DOI:10.57740/x1vy-hx80
Conference Material > Slide Presentation
Croft LA, Puig-García M, Silver C, Pearlman J, Stellmach DUS, et al.
MSF Scientific Days International 2022. 9 May 2022; DOI:10.57740/pe41-5813
Journal Article > ResearchFull Text
BMC Infect Dis. 12 June 2017; Volume 17 (Issue 1); DOI:10.1186/s12879-017-2499-1
Swaminathan A, du Cros PAK, Seddon JA, Mirgayosieva S, Asladdin R, et al.
BMC Infect Dis. 12 June 2017; Volume 17 (Issue 1); DOI:10.1186/s12879-017-2499-1
Extensively drug-resistant (XDR) tuberculosis (TB) and multidrug resistant (MDR)-TB with additional resistance to injectable agents or fluoroquinolones are challenging to treat due to lack of available, effective drugs. Linezolid is one of the few drugs that has shown promise in treating these conditions. Long-term linezolid use is associated with toxicities such as peripheral and optic neuropathies. Diabetes mellitus (DM), especially when uncontrolled, can also result in peripheral neuropathy. The global burden of DM is increasing, and DM has been associated with a three-fold increased risk of developing TB disease. TB and DM can be a challenging combination to treat. DM can inhibit the host immune response to tuberculosis infection; and TB and some anti-TB drugs can worsen glycaemic control. A child experiencing neuropathy that is a possible complication of both DM and linezolid used to treat TB has not been reported previously. We report peripheral neuropathy in a 15-year-old boy with type 1 DM, diagnosed with MDR-TB and additional resistance to injectable TB medications.
Journal Article > ResearchFull Text
Public Health Action. 21 September 2019
England K, Masini T, Fajardo E
Public Health Action. 21 September 2019
The World Health Organization (WHO) currently recommends Xpert® MTB/RIF as the initial test for all people with presumptive tuberculosis (TB). A number of challenges have been reported, however, in using this technology, particularly in low-resource settings. Here we examine these challenges, and provide our perspective of the barriers to Xpert scale-up as assessed through a survey in 16 TB burden countries in which the Médecins Sans Frontières is present. We observed that the key barriers to scale-up include a lack of policy adoption and implementation of WHO recommendations for the use of Xpert, resulting from high costs, poor sensitisation of clinical staff and a high turnover of trained laboratory
staff; insufficient service and maintenance provision provided by the manufacturer; and inadequate resources for sustainability and expansion. Funding is a critical issue as countries begin to transition out of support from the Global Fund. While it is clear that there is still an urgent need for research into and development of a rapid, affordable point-of-care test for TB that is truly adapted for use in low-resource settings, countries in the meantime need to develop functional and sustainable Xpert networks in order to close the existing diagnostic gap.
staff; insufficient service and maintenance provision provided by the manufacturer; and inadequate resources for sustainability and expansion. Funding is a critical issue as countries begin to transition out of support from the Global Fund. While it is clear that there is still an urgent need for research into and development of a rapid, affordable point-of-care test for TB that is truly adapted for use in low-resource settings, countries in the meantime need to develop functional and sustainable Xpert networks in order to close the existing diagnostic gap.