[Comparative study and sensitivity tests of Mycobacterium tuberculosis strains using nitrate reductase and absolute concentrations methods].

Introduction: The alarming increase of cases of tuberculosis with resistant germs renders compulsory the orientation towards rapid and cheap methods that would allow large-scale testing of mycobacterial strains.

Aim: Evaluation of the performances of two phenotypic methods for mycobacteria sensitivity testing. nitrate reductase and absolute concentrations.