1. Pulmonary tuberculosis  (Trust Mark: Doctor-Reviewed)
Pulmonary tuberculosis (TB) is a contagious bacterial infection that mainly involves the lungs, but may spread to other organs.• Reviewer: 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.

2. Tuberculosis  (Trust Mark: Doctor-Reviewed)
Tuberculosis (TB) is a potentially fatal contagious disease that can affect almost any part of the body but is mainly an infection of the lungs . It is caused by a bacterial microorganism: the tubercle bacillus or Mycobacterium tuberculosis . Alth...• Author: L. Fleming Fallon Jr., MD, PhD, DrPH