Cell-mediated hypersensitivity to the Mycobacterium tuberculous bacillus causes chronic granulomatous infection, predominantly in the lungs. While an estimated half the world’s population is infected, most cases of tuberculosis remain asymptomatic. Yet, three million people annually succumb to active tuberculosis infection. Increased public health funding following the WHO declaration of a tuberculosis “global health emergency”, in 1993, led to … Continue reading Tuberculosis