PMID: 9432386Aug 1, 1997Paper

Drug resistance among Mycobacterium tuberculosis isolates in Lebanon

The International Journal of Tuberculosis and Lung Disease : the Official Journal of the International Union Against Tuberculosis and Lung Disease
M M Hamze, George F Araj

Abstract

To determine the prevalence and patterns of drug resistance among Mycobacterium tuberculosis isolates recovered from tuberculosis (TB) cases in Lebanon. A total of 96 isolates were collected from the same number of TB cases between October 1994 and December 1995. These isolates were obtained from cases with newly diagnosed (81.3%) and previously treated (18.7%) cases of TB, and tested against isoniazid (INH), rifampicin (RIF), streptomycin (STM) and ethambutol (ETH), using the BACTEC-TB susceptibility procedure and system. The male to female ratio was 2:1 and the mean ages of males and females were almost similar, 34.1 and 32.7 years, respectively. Resistance to one or more drugs was found in 25 of 96 (26%) isolates. The overall percentages of single drug resistance against INH, RIF, STM and ETH were 23.9%, 12.5%, 7.3% and 3.1%, respectively. These percentages were higher, for all drugs, in isolates recovered from previously treated compared to new cases of TB: INH (50% vs 17.9%), RIF (33.3% vs 7.7%), STM (22.2% vs 3.8%) and ETH (11.1% vs 1.3%). Of the 25 resistant isolates, 11 were resistant to one drug only (10 to INH and 1 to STM), 10 were resistant to two drugs (7 to INH and RIF, 2 to INH and STM, 1 to STM and RIF), 2 were ...Continue Reading

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