Many people with tuberculosis stay in the latent infection stage, but some develop the active disease. Both stages are treatable. Tuberculosis (TB) is a bacterial infection that usually affects ...

Each year, tuberculosis kills some 1.25 million people ... that causes the infection progresses across three different stages. These stages are known as primary, latent and active.

Latent tuberculosis isn’t contagious. The immune system fights the bacteria just enough to keep the disease dormant. But without treatment at this stage, it can develop into active tuberculosis ...

There are three stages of tuberculosis: (1,2 ... immune systems that can’t contain the infection to one area. (4) The TB bacteria damage the lungs, making them unable to bring enough oxygen ...

Tuberculosis (TB), caused by the bacterium Mycobacterium tuberculosis, was responsible for 1.25 million deaths in 2023, 13% of which were among people living with HIV.