Pulmonary tuberculosis (TB) is a contagious bacterial infection that involves the lungs. It may spread to other organs. Causes Pulmonary tuberculosis (TB) is caused by the bacterium Mycobacterium tuberculosis (M. tuberculosis). TB is contagious. This means the bacteria is easily spread from an infected person to someone else. You can get TB by breathing in air droplets from a cough or sneeze of an infected person. The resulting lung infection is called primary TB. Most people recover from p...

What is tuberculosis (TB)? Tuberculosis (TB) is a disease caused by bacteria that are spread from person to person through the air. TB usually affects the lungs, but it can also affect other parts of the body, such as the brain, the kidneys, or the spine. In most cases, TB is treatable and curable; however, persons with TB can die if they do not get proper treatment. What is multidrug-resistant tuberculosis (MDR TB)? Multidrug-resistant TB (MDR TB) is caused by an organism that is resistant t...