Articles

Acute HIV infection is caused by the human immunodeficiency virus (HIV), a virus that gradually destroys the immune system.

AIDS (acquired immune deficiency syndrome) is the final stage of , which causes severe damage to the immune system.

Anthrax is an infectious disease caused by bacteria called Bacillus anthracis. Infection in humans most often involves the skin, the gastrointestinal tract, or the lungs. See also:

Aspergillosis is an infection, growth, or due to the Aspergillus fungus.

Aspergillosis precipitin is a laboratory test to detect in the blood resulting from exposure to the fungus .

Asymptomatic HIV infection is a phase of infection with human immunodeficiency virus (HIV) during which there are no symptoms of HIV infection.