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Cause

The HIV infection is caused by the human immunodeficiency virus (HIV).

After HIV is in the body, it starts to destroy CD4+ cells, which are white blood cells that help the body fight infection and disease.

Recommended Related to HIV/AIDS

Understanding AIDS/HIV -- Prevention

The most common way people are infected with HIV is by having sex with an infected person. You can't tell by looking at a person whether they have HIV, so you have to protect yourself -- and your sex partner. Safe Sex and HIV Prevention Don't have unprotected sex outside marriage or a committed relationship. If you or your partner has ever had unprotected sex -- or if either of you uses injected drugs -- the only way to be sure you don't have HIV is to get tested. Have two...

Read the Understanding AIDS/HIV -- Prevention article > >

HIV is spread when blood, semen, or vaginal fluids from an infected person enter another person's body, usually through sexual contact, from sharing needles when injecting drugs, or from mother to baby during birth.

WebMD Medical Reference from Healthwise

Last Updated: February 13, 2014
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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