Tuberculosis is an infectious disease primarily affecting the lungs that is most often caused by Mycobacterium tuberculosis. It can spread to any part of the body. There are several types of tuberculosis including pulmonary, avian, and bovine tuberculosis. Risk factors include close contact with an infected person, weakened immune systems, travel to countries where tuberculosis is common, and working in healthcare. Signs and symptoms vary but may include a cough, chest pain, and fatigue. Prevention methods include covering coughs, wearing masks, vaccination, isolation of infected individuals, and completing the full course of medication. Treatment typically involves a 6-12 month course of multiple antibiotics.