Io vitro susceptibility of Mycobacterium tuberculosis to fusidic acid

The aim of this study was to determine the in vitro susceptibility of 170 clinical isolates of Mycobacterium tuberculosis to fusidic acid using a proportion dilution method. Nineteen isolates were resistant to at least one first line anti-tuberculosis drug. A total of 1.8% of the isolates were resistant to fusidic acid. Fusidic acid should be evaluated clinically as a potential supplementary drug for the treatment of infections due to multidrug-resistant strains of M. tuberculosis.