IJTLD openPub Date : 2025-04-09eCollection Date: 2025-04-01DOI: 10.5588/ijtldopen.24.0561
M C M Melo, A K Silveira, A P R Dalvi, J Silva, V S Printes, L Anselmo, T I da Silva, M M Oliveira, C Conceição, A Lopes, V Bollela, M Cordeiro-Santos, M Bhering, A S R Moreira, A C C Carvalho, A L Kritski
{"title":"Accuracy of Truenat™ MTB Plus for the diagnosis of pulmonary TB.","authors":"M C M Melo, A K Silveira, A P R Dalvi, J Silva, V S Printes, L Anselmo, T I da Silva, M M Oliveira, C Conceição, A Lopes, V Bollela, M Cordeiro-Santos, M Bhering, A S R Moreira, A C C Carvalho, A L Kritski","doi":"10.5588/ijtldopen.24.0561","DOIUrl":"https://doi.org/10.5588/ijtldopen.24.0561","url":null,"abstract":"<p><strong>Background: </strong>Truenat™ is a WHO-recommended rapid molecular test for diagnosing TB and detecting rifampicin resistance, whose performance has been evaluated in a few high TB burden countries.</p><p><strong>Methods: </strong>A prospective multicentre study was conducted in Brazil to estimate the sensitivity and specificity of Truenat MTB Plus compared to Xpert<sup>®</sup> MTB/RIF Ultra for detecting pulmonary TB. Liquid culture for <i>Mycobacterium tuberculosis</i> and drug susceptibility testing were used as reference.</p><p><strong>Results: </strong>Among 283 participants, 112 (39.6%) had culture-positive pulmonary TB. The sensitivity and specificity of Truenat MTB Plus were respectively 72.7% (95% CI 63.41-80.78) and 99.4% (95% CI 96.71-99.98), compared to 78.4% (95% CI 69.56-85.63) and 99.4% (95% CI 96.67-99.98) for Xpert MTB/RIF Ultra. In 89 people living with HIV (PLHIV), Truenat MTB Plus showed a sensitivity of 45.0% (95% CI 23.06-68.47) and specificity of 100.0% (95% CI 95.64-100.00). Among 71 patients previously treated for TB, Truenat MTB Plus showed sensitivity and specificity of respectively 79.3% (95% CI 60.28-92.01) and 97.5% (95% CI 86.84-99.94). Xpert MTB/RIF Ultra detected rifampicin resistance in 11/88 samples (12.5%) vs 9/72 (12.5%) with Truenat MTB Plus.</p><p><strong>Conclusion: </strong>The Truenat MTB Plus performance was comparable to Xpert MTB/RIF Ultra. Both tests demonstrated lower sensitivity in PLHIV.</p>","PeriodicalId":519984,"journal":{"name":"IJTLD open","volume":"2 4","pages":"199-207"},"PeriodicalIF":0.0,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11984528/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144052493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
IJTLD openPub Date : 2025-04-09eCollection Date: 2025-04-01DOI: 10.5588/ijtldopen.25.0016
T Nyamsaikhan, G Dorj, O Erdenee, B Jantsansengee, B Badamnachin, G Ochirdorj
{"title":"Prevalence and risk factors of COVID-19 co-infection in TB patients.","authors":"T Nyamsaikhan, G Dorj, O Erdenee, B Jantsansengee, B Badamnachin, G Ochirdorj","doi":"10.5588/ijtldopen.25.0016","DOIUrl":"https://doi.org/10.5588/ijtldopen.25.0016","url":null,"abstract":"","PeriodicalId":519984,"journal":{"name":"IJTLD open","volume":"2 4","pages":"238-240"},"PeriodicalIF":0.0,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11984520/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144054581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
IJTLD openPub Date : 2025-03-12eCollection Date: 2025-03-01DOI: 10.5588/ijtldopen.24.0625
Y Hamada, R Mukora, R Pelusa, T Ntshiqa, J Shedrawy, K Velen, I Abubakar, S Charalambous, S Walker, M X Rangaka
{"title":"Costs and cost-effectiveness of integrated screening for non-communicable diseases in TB contacts.","authors":"Y Hamada, R Mukora, R Pelusa, T Ntshiqa, J Shedrawy, K Velen, I Abubakar, S Charalambous, S Walker, M X Rangaka","doi":"10.5588/ijtldopen.24.0625","DOIUrl":"https://doi.org/10.5588/ijtldopen.24.0625","url":null,"abstract":"<p><strong>Background: </strong>Integrating non-communicable disease (NCD) screening into TB household contact investigations may identify undiagnosed NCDs and reduce the burden of both conditions. However, evidence on the costs and cost-effectiveness of this approach is limited.</p><p><strong>Method: </strong>We conducted a cross-sectional study in South Africa to assess patient and provider costs for NCD screening (hypertension, diabetes, chronic kidney disease, dyslipidaemia). Incremental costs per NCD case identified were calculated. Using a decision tree model, we estimated incremental costs per disability-adjusted life year (DALY) averted over 10 years from a healthcare perspective, with cardiovascular disease (CVD) risk estimated using the WHO prediction model.</p><p><strong>Results: </strong>The incremental cost was USD72.3 per contact screened and USD334.0 per NCD case identified. Integrated screening reduced mean 10-year CVD risk from 5.7% to 2.7% among contacts with NCDs. The incremental cost-effectiveness ratio (ICER) was USD27,043.6 per DALY averted, exceeding South Africa's threshold of USD3,708. Management of identified NCDs, mainly drug costs, comprised over 80% of total incremental costs. The ICER decreased in populations with a high risk for NCDs.</p><p><strong>Conclusion: </strong>Integrated NCD screening was not cost-effective, mainly due to subsequent care costs. Prioritising individuals at high risk for NCDs can improve cost-effectiveness.</p>","PeriodicalId":519984,"journal":{"name":"IJTLD open","volume":"2 3","pages":"160-165"},"PeriodicalIF":0.0,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11906026/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143653258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
IJTLD openPub Date : 2025-03-12eCollection Date: 2025-03-01DOI: 10.5588/ijtldopen.24.0552
A N Shapiro, H Moultrie, K R Jacobson, J Bor, P da Silva, L Scott, H E Jenkins
{"title":"The risk of rifampicin-resistant TB after drug-susceptible TB treatment.","authors":"A N Shapiro, H Moultrie, K R Jacobson, J Bor, P da Silva, L Scott, H E Jenkins","doi":"10.5588/ijtldopen.24.0552","DOIUrl":"https://doi.org/10.5588/ijtldopen.24.0552","url":null,"abstract":"","PeriodicalId":519984,"journal":{"name":"IJTLD open","volume":"2 3","pages":"173-175"},"PeriodicalIF":0.0,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11906027/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143652510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
IJTLD openPub Date : 2025-03-12eCollection Date: 2025-03-01DOI: 10.5588/ijtldopen.24.0467
G Lemvik, L Larsson, F Rudolf, J E Vejrum, M Sodemann, V F Gomes, C Wejse
{"title":"An open-label cluster-randomised trial on TB preventive therapy for children.","authors":"G Lemvik, L Larsson, F Rudolf, J E Vejrum, M Sodemann, V F Gomes, C Wejse","doi":"10.5588/ijtldopen.24.0467","DOIUrl":"https://doi.org/10.5588/ijtldopen.24.0467","url":null,"abstract":"<p><strong>Background: </strong>In a study on 9 months of isoniazid preventive therapy (IPT) in children in Guinea-Bissau, 76% of children exposed to TB at home completed 6 months of IPT. We aimed to test whether 4 months of rifampicin and isoniazid (RH) would improve adherence compared to 9 months of isoniazid (INH).</p><p><strong>Methods: </strong>We conducted an open-label cluster-randomised superiority study in children aged <15 years living with a TB case. Children were randomised by house to receive 4 months of RH or 9 months of INH. RH was given as a fixed-combination pill. The primary outcome was adherence, defined as taking >80% of prescribed dosages per month, assessed by pill count. Our aim was 3 months of RH or 6 months of INH.</p><p><strong>Results: </strong>A total of 752 children from 223 houses were included, 354 in the INH group and 398 in the RH group. Overall, 57% of the children took >80% of the prescribed pills. In the INH group, 68% completed 6 months of therapy, while 61% of the RH group completed 3 months (OR 1.32, 95% CI 0.90-1.95). The main reason for non-adherence in both groups was travel or relocation, accounting for 50% of missed doses.</p><p><strong>Conclusion: </strong>The shorter preventive therapy of 4 months of RH did not improve adherence in children in Guinea-Bissau. Travelling was the primary reason for non-adherence.</p>","PeriodicalId":519984,"journal":{"name":"IJTLD open","volume":"2 3","pages":"120-128"},"PeriodicalIF":0.0,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11906030/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143653253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
IJTLD openPub Date : 2025-03-12eCollection Date: 2025-03-01DOI: 10.5588/ijtldopen.24.0484
A Drane, A Molkenthin, M Gassama, S Pouzol, P Vanhems, J Hoffmann
{"title":"Non-sputum-based triage and confirmatory diagnostic tests for pediatric TB.","authors":"A Drane, A Molkenthin, M Gassama, S Pouzol, P Vanhems, J Hoffmann","doi":"10.5588/ijtldopen.24.0484","DOIUrl":"https://doi.org/10.5588/ijtldopen.24.0484","url":null,"abstract":"<p><strong>Background: </strong>Non-sputum-based triage and confirmatory tests are essential for early TB detection and timely treatment in children.</p><p><strong>Methods: </strong>A mini-review was conducted from January 2022 to May 2024, evaluating five studies on non-sputum-based assays for childhood TB diagnosis. Both Microbiological and Clinical Reference Standards were used to assess diagnostic accuracy and triage potential.</p><p><strong>Results: </strong>Among the confirmatory tests, only the gastric aspiration test with cartridge-based nucleic acid amplification tests (CBNAAT) met the WHO Target Product Profile criteria. However, this method remains invasive and is not suitable for point-of-care testing. Urine testing by gas chromatography-mass spectrometry (GC/MS) or C-ELISA (BJ76/A194) demonstrated high performance but lacked point-of-care applicability in resource-limited settings. Stool testing with CBNAAT is a viable alternative with high specificity but low sensitivity. For triage, urine lipoarabinomannan tests and blood MTB-HR tests show promise based on specificity, practicality, cost, and turnaround time.</p><p><strong>Conclusion: </strong>This review highlights the performance of non-sputum-based assays for childhood TB and their potential as triage tools. While some other innovations show promise for the triage and/or diagnosis of TB in adults, further studies are needed to evaluate the performance of these tests in pediatric populations.</p>","PeriodicalId":519984,"journal":{"name":"IJTLD open","volume":"2 3","pages":"153-159"},"PeriodicalIF":0.0,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11906028/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143652496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
IJTLD openPub Date : 2025-03-12eCollection Date: 2025-03-01DOI: 10.5588/ijtldopen.25.0152
L Kuksa, C Andrejak, B Haecker, G Bothamley, A Calcagno, D M Cirillo, R Duarte, R Fatima, G Ferlazzo, L Guglielmetti, G Günther, C Hewison, C R Horsburgh, T Jäger, Y Kalancha, R Otto-Knapp, K Kranzer, T Lillebaek, G Marks, K Middelkoop, I Motta, V Rabinova, P Sommerfeld, P Tattevin, C Lange
{"title":"Urgent request for pretomanid label expansion to align with WHO guidelines and improve treatment accessibility and efficacy.","authors":"L Kuksa, C Andrejak, B Haecker, G Bothamley, A Calcagno, D M Cirillo, R Duarte, R Fatima, G Ferlazzo, L Guglielmetti, G Günther, C Hewison, C R Horsburgh, T Jäger, Y Kalancha, R Otto-Knapp, K Kranzer, T Lillebaek, G Marks, K Middelkoop, I Motta, V Rabinova, P Sommerfeld, P Tattevin, C Lange","doi":"10.5588/ijtldopen.25.0152","DOIUrl":"https://doi.org/10.5588/ijtldopen.25.0152","url":null,"abstract":"<p><p>Pretomanid is a key anti-TB drug included in the WHO list of essential medications. The current EMA-approved label for pretomanid restricts its use to the regimen comprising bedaquiline, pretomanid and linezolid (BPaL) and only for extensively drug-resistant-TB or multidrug-resistant TB, \"when antibiotics used for the latter form of TB do not work or cause unacceptable side effects.\" This restricted use implies that the older, prolonged and poorly tolerated regimens remain the recommended treatment for most cases of drug-resistant TB. The authors, representing many respiratory groups and societies, call for the label expansion of pretomanid to align with global guidelines, allowing for broader use.</p>","PeriodicalId":519984,"journal":{"name":"IJTLD open","volume":"2 3","pages":"117-119"},"PeriodicalIF":0.0,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11906023/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143652951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
IJTLD openPub Date : 2025-03-12eCollection Date: 2025-03-01DOI: 10.5588/ijtldopen.24.0569
S E Purchase, J Brigden, J A Seddon, N A Martinson, L Fairlie, S Staples, A Poswa, T Duong, H S Schaaf, A C Hesseling
{"title":"Acceptability of a 250 mg levofloxacin formulation in children receiving TB preventive treatment.","authors":"S E Purchase, J Brigden, J A Seddon, N A Martinson, L Fairlie, S Staples, A Poswa, T Duong, H S Schaaf, A C Hesseling","doi":"10.5588/ijtldopen.24.0569","DOIUrl":"https://doi.org/10.5588/ijtldopen.24.0569","url":null,"abstract":"<p><strong>Background: </strong>Recent evidence indicates that levofloxacin (LFX) is effective in preventing TB in individuals exposed to multidrug-resistant TB (MDR-TB). Despite the need for pediatric formulations, the 250 mg adult LFX formulation is affordable and widely used for TB treatment and prevention in children.</p><p><strong>Methods: </strong>TB-CHAMP (Tuberculosis Child Multidrug-resistant Preventive Therapy ISRCTN92634082) was a trial of MDR-TB preventive treatment, comparing levofloxacin to placebo in children with MDR-TB exposure. Acceptability questionnaires were administered to caregivers at six timepoints during the 24-week treatment phase. Likert scales were used to grade 6 domains of acceptability, and a composite acceptability (CA) outcome was generated. Factors associated with acceptability were assessed using modified Poisson regression models to estimate risk ratios (RRs).</p><p><strong>Results: </strong>Overall, 922 children were randomised, 453 to LFX and 469 to placebo. By Week 8, 25.1% of children on LFX had poor CA versus 6.2% receiving placebo (Weeks 0-24: RR 3.43, 95% CI 2.69-4.37). Acceptability in the LFX arm improved from 36.8% poor CA at baseline to 12.9% at Week 24. Only 11.7% of children swallowing tablets whole/halved had poor CA outcomes at Week 8, compared to 34.4% swallowing crushed/softened tablets.</p><p><strong>Conclusion: </strong>LFX 250 mg tablets have reasonable acceptability and could be used as an alternative to dispersible formulations, especially in children able to swallow tablets.</p>","PeriodicalId":519984,"journal":{"name":"IJTLD open","volume":"2 3","pages":"129-136"},"PeriodicalIF":0.0,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11906031/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143653252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
IJTLD openPub Date : 2025-03-12eCollection Date: 2025-03-01DOI: 10.5588/ijtldopen.24.0667
T S Johnson, A Nalutaaya, P Biché, K Ndyabayunga, R Okura, I Mugabi, D Nantale, V Nakiiza, P J Kitonsa, E A Kendall, A Katamba, D W Dowdy
{"title":"Investigating low uptake of tuberculin skin testing when integrated with active case-finding for TB.","authors":"T S Johnson, A Nalutaaya, P Biché, K Ndyabayunga, R Okura, I Mugabi, D Nantale, V Nakiiza, P J Kitonsa, E A Kendall, A Katamba, D W Dowdy","doi":"10.5588/ijtldopen.24.0667","DOIUrl":"10.5588/ijtldopen.24.0667","url":null,"abstract":"","PeriodicalId":519984,"journal":{"name":"IJTLD open","volume":"2 3","pages":"179-181"},"PeriodicalIF":0.0,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11906024/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143652446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}