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Background  Rapid detection of rifampicin resistance is essential for early management and prevention of transmission of multidrug-resistant tuberculosis (MDR-TB). We studied the prevalence of rifampicin resistance of  Mycobacterium tuberculosis  (MTB) among presumptive TB patients in Addis Ababa, Ethiopia.    Methods  A retrospective cross sectional study was conducted in three referral hospitals and the regional laboratory in Addis Ababa city from March 2015 to October 2017. Data was collected by data-extraction sheet from registration books. It was analyzed using SPSS version 20. Statistically significant association was taken with  P  < 0.05.    Results  A total of 12,414 (11,672 adults and 742 paediatrics) TB presumptive patients were included in the study. The overall prevalence of TB was 15.11% (1876/12414) in all age groups and 13.6%(101/742) among paediatric population. Rifampicin resistant TB was 9.9% (186/1876) in all TB confirmed cases and 7.9% (8/101) in paediatric TB patients. The prevalence of rifampicin resistant TB among new and previously treated was 7.6 and 27.4%, respectively. Sex (being female) and previous TB treatment were significantly associated with rifampicin resistant TB.    Conclusions  Rifampicin-resistant TB is prevalent both among adult and paediatric TB patients. The strong association of rifampicin resistance with previous treatment in this study suggests the need to improve and monitor the treatment to limit the emergence of drug resistant TB.

bmc infectious diseases

Prevalence of rifampicin resistant Mycobacterium tuberculosis among presumptive tuberculosis patients in selected governmental hospitals in Addis Ababa, Ethiopia