Introduction in Cameroon patients with multidrug/rifampicin resistant pulmonary tuberculosis (MDR/RR-PTB) are treated with a 9-11 month standardised shorter treatment regimen. Despite its effectiveness, factors associated with the occurrence of an unfavourable treatment outcome in this group of patients are not known. Determine the incidence and identify factors associated with an unfavourable treatment outcome among patients with rifampicin resistant pulmonary tuberculosis (RR-PTB) in Yaoundé. Methods we conducted a retrospective record review of all consecutive patients with bacteriologically confirmed RR-PTB followed up at the specialised MDR/RR-TB treatment centre of the Jamot Hospital in Yaoundé (JHY) from January 2013 to November 2019. A patient was classified as having an unfavourable outcome if he/she had treatment failure, died or was lost to follow-up during the course of treatment. Results a total of 242 RR-PTB patients with a mean age of 35.59 ± 12.02 years including 144 (59.5%) males were registered. Forty-nine (49) of the 242 patients had an unfavourable treatment outcome giving a cumulative incidence of 20.20% (95% confidence interval (95% CI): 15.40-25.90%). Multivariable analysis revealed that patients with an unfavourable outcome were more likely to be males (odds ratio (OR): 2.94; 95% CI: 1.24-7.00, p= 0.015), HIV infected (OR: 2.67; 95% CI: 1.17-6.06, p = 0.019), and have a baseline haemoglobin level ≤ 10g/dl (OR: 2.87; 95% CI: 1.25-6.58, p = 0.013). Conclusion the rate of an unfavourable treatment outcome among patients with RR-PTB at the specialised MDR/RR-TB treatment centre of the JHY is relatively high. The male sex, HIV infection and moderate to severe anaemia are independent factors associated with an unfavourable treatment outcome.

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Objectives: Mortality during tuberculosis (TB) remains high in Africa. The purpose of our study was to determine the incidence and predictors of death during TB treatment in Cameroon. Materials and Methods: Data of subjects aged ≥15 years were retrospectively extracted from registers in all TB diagnostic and treatment centers in the Western and Northern regions of Cameroon from 2010 to 2015. Cox regression models were used to determine predictors of death during TB treatment. Results: Of the 19,681 patients included, 12,541 (63.7%) were male and their median age (25th-75th percentile) was 34 (26–45) years. The cumulative incidence (95% confidence interval [CI]) of death during TB treatment was 8.0% (7.5–8.5%). The predictors (hazard ratios [95% CI]) of death were: Age >34 years (1.479 [1.295–1.688], P < 0.001), female sex (1.471 [1.286–1.683], P < 0.001), extra-pulmonary TB (1.723 [1.466–2.026], P < 0.001), human immunodeficiency virus infection (3.739 [3.269–4.276], P < 001]), TB treatment in the Western region (2.241 [1.815–2.768], P < 0.001), treatment before 2012 (1.215 [1.073–1.376], P = 0.002)and low body weight (1st quartile and 2nd quartile) (2.568 [2.133–3.092], [P < 0.001]) and (1.569 [1.298–1.896], P < 0.001) respectively. Conclusion: The incidence of death during TB was relatively high in the Western and Northern regions of Cameroon. Recognition of these persons at greatest risk may improve care and reduce death durinng TB treatment.