tuberculosis is contagious
About TB. TB is a contagious and often severe airborne disease caused by infection with Mycobacterium tuberculosis (Mtb). TB typically affects the lungs, but it also can affect any other organ of the body.It is usually treated with a regimen of drugs taken for 6 months to 2 years depending on the type of infection.bout TB. TB is a contagious and often severe airborne disease caused by infection with Mycobacterium tuberculosis (Mtb). TB typically affects the lungs, but it also can affect any other organ of the body.