Tuberculosis (TB) is an airborne disease, caused by a bacteria M. tuberculosis. It is an infectious disease that most commonly affects the lungs but can affect any part of the body (except the hair and the nails). TB spreads through air. When someone with TB coughs, spits or sneezes, droplets of mucous carrying TB bacteria may be expelled into the air. Since TB is airborne, anyone who inhales the bacteria can get infected with TB. About 5-10% of people exposed to the bacteria, may develop an active disease state, owing largely to an inefficient immune system, & other associated factors. An infectious case of pulmonary TB if untreated, can infect 10-15 people in one year. TB is a curable disease. Treatment is available to all citizens free of cost under the National TB Elimination Programme.