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Rifampicin-resistant Mycobacterium tuberculosis among tuberculosis-presumptive cases at University of Gondar Hospital, northwest Ethiopia

Authors Jaleta KN, Gizachew M, Gelaw B, Tesfa H, Getaneh A, Biadgo B

Received 1 March 2017

Accepted for publication 17 May 2017

Published 14 June 2017 Volume 2017:10 Pages 185—192

DOI https://doi.org/10.2147/IDR.S135935

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Akshita Wason

Peer reviewer comments 2

Editor who approved publication: Professor Suresh Antony

Kefyalew N Jaleta,1,* Mucheye Gizachew,1 Baye Gelaw,1 Habtie Tesfa,2 Alem Getaneh,1 Belete Biadgo3,*

1Department of Medical Microbiology, 2Department of Medical Parasitology, 3Department of Clinical Chemistry, School of Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia

*These authors contributed equally to this work

Background: Various studies have reported that the emergence of drug-resistant tuberculosis poses a significant threat to tuberculosis-control programs worldwide. Rifampicin resistance is a surrogate marker of multidrug-resistant tuberculosis, since it reveals the presence of greater than 90% isoniazid resistance. Evidence on rifampicin-resistant Mycobacterium tuberculosis is scarce in the literature.
Objective: To determine the prevalence of rifampicin-resistant M. tuberculosis among tuberculosis-presumptive cases at the University of Gondar Hospital.
Materials and methods: A retrospective study was conducted at the University of Gondar Hospital from January 2013 to August 2015. Data were collected from registration books using a data-extraction format after securing ethical approval and checking the completeness of necessary information. Data were double-entered and rechecked to ensure accuracy and analyzed using SPSS version 20. Results were summarized using descriptive statistics. Associations were assessed using Fisher’s exact test, and P<0.05 was considered statistically significant.
Results: A total of 1,820 M. tuberculosis-presumptive patients were included in the study. The majority of the study participants were males (59.2%). The mean age of the participants was 36.6±15.8 years. The preponderant age-group was 24–30 years, with 477 (23.5%) patients. The overall prevalence of M. tuberculosis-confirmed cases was 448 (24.6%, 95% CI 0.23–0.27). Of the 448 M. tuberculosis-confirmed cases, 71 (15.8%, 95% CI 1.12–1.19) were resistant to rifampicin. Rifampicin-resistant M. tuberculosis was observed among HIV seropositives (14 [18.7%]), males (45[17.3%]), and previously treated tuberculosis patients (61 [16.5%]), although no significant association was found in this study.
Conclusion: The overall prevalence of M. tuberculosis and rifampicin resistance was found to be high in tuberculosis patients in this study. Therefore, early detection of drug-resistant M. tuberculosis should be strengthened for management of tuberculosis patients.

Keywords: University of Gondar Hospital, rifampicin-resistant, tuberculosis

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