<prompt> Most common agent causing tuberculosis in AIDS patient in tropical countries is:Mycobacterium tuberculosisMycobacterium intracellulare1997Mycobacterium parvumMycobacterium atypical  <response>: Ans. is a i.e., Mycobacterium tuberculosis Ref: Ananthanarayan, 9the, p. 576 and 8the, p. 575Common pathogens causing T.B. in AIDS patients are M. tuberculosis and M. avium intraceliulare. In developing countries, the most important pathogen is M. tuberculosis, with many strain being multidrug resistant. 