Symptoms & Causes

Find out more about the signs and symptoms of HIV infection, the causes of HIV, and how HIV causes AIDS.

Understanding the Symptoms of HIV/AIDS Learn about early and late symptoms of HIV and AIDS.
How Do You Get HIV? HIV is a virus, like a cold or the flu -- but it doesn't spread the same way. You can only get it when certain fluids from someone who's infected get into your body.
How HIV Becomes AIDS HIV is a virus. It causes AIDS, the disease you can get after the virus has infected your body and weakened your immune system. Not everyone who has HIV will get AIDS, though.