Pneumocystis is a
fungus that can sometimes cause
pneumonia in people who have
Pneumonia is an infection of the lungs. Pneumonia can make it hard to
breathe and to get enough oxygen into the bloodstream. Symptoms often begin
suddenly and may be similar to those of an
upper respiratory infection, such as
influenza or a cold. Common symptoms of pneumonia
AIDS (acquired immune deficiency syndrome) isn't a disease in itself; rather, AIDS is a condition that develops when a person's body has been weakened by HIV (the human immunodeficiency virus). HIV is found in blood and sexual fluids and spreads mainly through unprotected sexual contact and the sharing of hypodermic needles and equipment.
When a person becomes infected with HIV, it damages his or her immune system, leading to immunodeficiency; the immune system can no longer fight off common...