OverviewTuberculosis is a contagious bacterial disease that primarily involves the lungs. Tuberculosis may develop after inhaling infected droplets sprayed into the air from a cough or sneeze of someone infected with Mycobacterium tuberculosis.
Update Date 11/20/2013
Updated by: Jatin M. Vyas, MD, PhD, Assistant Professor in Medicine, Harvard Medical School; Assistant in Medicine, Division of Infectious Disease, Department of Medicine, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Bethanne Black, and the A.D.A.M. Editorial team.