Email updates

Keep up to date with the latest news and content from BMC Research Notes and BioMed Central.

Open Access Short Report

Epidemiology of anti-tuberculosis drug resistance patterns and trends in tuberculosis referral hospital in Addis Ababa, Ethiopia

Dereje Abate12, Bineyam Taye13*, Mohammed Abseno2 and Sibhatu Biadgilign4

Author affiliations

1 Addis Ababa University, College of Health Science, School of Medical Laboratory Sciences, Addis Ababa, Ethiopia

2 St. Peter’s TB Specialized Hospital, Addis Ababa, Ethiopia

3 Addis Ababa University, College of Health Science, School of Public health, Addis Ababa, Ethiopia

4 Department of Epidemiology and Biostatistics, Jimma University, College of Public Health and Medical Science, Jimma, Ethiopia

For all author emails, please log on.

Citation and License

BMC Research Notes 2012, 5:462  doi:10.1186/1756-0500-5-462

Published: 28 August 2012



Drug-resistant TB has emerged as a major challenge facing TB prevention and control efforts. In Ethiopia, the extent/trend of drug resistance TB is not well known. The aim of this study was to determine the pattern and trend of resistance to first line anti-TB drugs among culture positive retreatment cases at St.Peter’s TB Specialized Hospital.


A hospital based retrospective study was used to assess the pattern of anti-TB drug resistance among previously treated TB patients referred to St.Peter’s TB Specialized Hospital from January 2004-December 2008 Gregorian calendar(GC) for better diagnosis and treatment.

Among 376 culture positive for M. tuberculosis one hundred and two (27.1%) were susceptible to all of the four first line anti-TB drugs -Isoniazid (INH), Rifampicin (RIF), Ethambutol (ETB) & Streptomycin (STM). While 274 (72.9%) were resistant to at least one drug. Any resistance to STM (67.3%) was found to be the most common and the prevalence of MDR-TB was 174 (46.3%). Trend in resistance rate among re-treatment cases from 2004 to 2008 showed a significant increase for any drug as well as for INH, RIF, and MDR resistance (P <0.05 for trend).


There has been an increasing trend in drug resistance in recent years, particularly in retreatment cases. Therefore, establishing advanced diagnostic facilities for early detection of MDR-TB and expanding second line treatment center to treat MDR-TB patients and to prevent its transmission is recommended.

Epidemiology; MDR-TB; Drug resistance; Drug susceptibility; Trend