Tuberculosis (TB) is a serious bacterial infection that mainly affects the lungs. The bacteria spread from person to person via sneezing and cough. It is highly contagious. Most TB infections are latent (no symptoms), with about 1 in 10 having an active infection and symptoms including cough, exhaustion, and more. Both latent and active TB is treatable with antibiotics, but can be fatal if left untreated.
