HIV and Tuberculosis (TB)
- Tuberculosis (TB) is a disease caused by bacteria called Mycobacterium tuberculosis. The TB bacteria can spread from person to person through the air.
- Once in the body, TB can be inactive or active. Inactive TB is called latent TB infection. Active TB is called TB disease.
- TB usually affects the lungs, but it can affect any part of the body, including the kidneys, spine, or brain. If not treated, TB disease can cause death.
- HIV weakens the immune system, increasing the risk of TB in people with HIV.
- People who have both HIV and TB should be treated for both diseases; however, when to start treatment and what medicines to take depends on a person’s individual circumstances.
When a person with TB disease of the lungs coughs or speaks, droplets of TB bacteria spread through the air. People nearby who breathe in the TB bacteria can get TB.
Once in the body, TB can be inactive or active. When the TB bacteria is inactive, this is called latent TB infection. When the TB bacteria is active, this is called TB disease. The image below shows the difference between latent TB infection and TB disease.
TB is an opportunistic infection (OI). OIs are infections that occur more often or are more severe in people with weakened immune systems than in people with healthy immune systems. HIV weakens the immune system, increasing the risk of TB in people with HIV.
Infection with both HIV and TB is called HIV/TB coinfection. Untreated latent TB infection is more likely to advance to TB disease in people with HIV than in people without HIV. In people with HIV, TB disease is considered an AIDS-defining condition. AIDS-defining conditions are infections and cancers that are life-threatening in people with HIV.
Treatment with HIV medicines is called antiretroviral therapy (ART). HIV medicines protect the immune system and prevent HIV from advancing to AIDS. In people with HIV and latent TB infection, treatment with HIV and TB medicines reduces the chances that latent TB infection will advance to TB disease.
- A persistent cough that may bring up blood or sputum
- Chest pain
- Weakness or fatigue
- Loss of appetite
- Weight loss
- Night sweats
When TB disease affects other parts of the body, a person may have other symptoms.
People with HIV/TB coinfection should be treated for both HIV and TB; however, when to start treatment and what medicines to take depends on a person’s individual circumstances. Taking certain HIV and TB medicines at the same time can increase the risk of drug-drug interactions and side effects. People being treated for HIV/TB coinfection are carefully monitored by their health care providers.
If you have HIV/TB coinfection, talk to your health care provider about a treatment plan that works for you.