Tuberculosis is a contagious bacterial disease that starts in the lungs, but may spread to other organs. Tuberculosis may develop after inhaling infected droplets sprayed into the air from a cough or sneeze of someone infected with Mycobacterium tuberculosis.
Reviewed last on: 9/17/2008
David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; and Jatin M. Vyas, PhD, MD, Instructor in Medicine, Harvard Medical School, Assistant in Medicine, Division of Infectious Disease, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.