This document provides information about tuberculosis (TB) in 5 paragraphs: 1) It describes TB as still a major global killer, infecting 2 billion people worldwide. TB usually infects the lungs and is spread through the air. 2) It notes the increased risk of active TB for HIV+ people and reasons for recent TB increases. 3) Methods of diagnosis and the importance of completing TB treatment to prevent multi-drug resistant strains are covered. 4) Prevention methods such as isolation and BCG vaccination are discussed. 5) The increased risk of active TB and different infection patterns in HIV+ people are summarized.