Clinical and radiological characteristics of aspergillosis are very similar to tuberculosis. This prompted us to investigate the prevalence of respiratory tract Aspergillus sp. in the sputum of patients suspected of pulmonary tuberculosis. Two hundred sputa samples were studied for Aspergillus sp. and Mycobacterium tuberculosis. Analysis for Aspergillus sp. was done by direct microscopy and fungal culture on two sets of Sabouraud Dextrose Agar. Mycobacterium tuberculosis was analysed by the Auramine-phenol fluorochrome technique. Aspergillus sp were isolated from 30(15%) patients, M....