[Prevalence of Mycobacterium tuberculosis resistance to quinolones and injectables in Colombia, 2012-2013].
BIOMEDICA 2017;
37:96-103. [PMID:
28527253 DOI:
10.7705/biomedica.v37i2.3204]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 05/18/2016] [Indexed: 11/21/2022]
Abstract
INTRODUCTION
Tuberculosis is a health problem worldwide. The World Health Organization estimated 9.6 million new cases and 480,000 multirresistant cases for 2014. The assessment of resistance to quinolones and injectables was implemented only a few years ago, so its prevalence is not known.
OBJECTIVE
To determine the prevalence of resistance to amikacin, capreomycin and ofloxacin in cases of tuberculosis resistant to isoniazid and/or rifampin during 2012-2013.
MATERIALS AND METHODS
This was a cross-sectional study of 489 isolates resistant to isoniazid and/or rifampin. We used the Bactec MGITTM technique for susceptibility tests. For analyzing the rate of resistance, we grouped cases according to the history of treatment with second line drugs.
RESULTS
In the 438 new cases, the drug that showed greater overall resistance was kanamycin with 7.1 % (95% CI: 4.6 to 9.6). In 51 previously treated cases, this highest resistance was 27.5 % (95% CI:14.2 to 40.7). The overall resistance was higher in cases with a history of treatment with quinolones and injectables. We found seven cases of extremely resistant tuberculosis.
CONCLUSION
This study demonstrates the presence of resistance to second line drugs in people with drug-resistant tuberculosis with and without previous treatment with quinolones and/or injectables, these latter having a higher percentage of resistance. For that reason, it is essential to perform susceptibility testing and analyze this information routinely.
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