A variety of HIV risk factors can increase your chances of becoming infected with a virus called HIV (human immunodeficiency virus). This infection can lead to AIDS (acquired immunodeficiency syndrome), which makes it more difficult for your body to fight off infection and disease. Some risk factors increase your HIV risk more than others. You can't entirely eliminate risk, but you can do many things to lower your risk and protect yourself.
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.
rarely spread by blood transfusions or organ transplants in the United States
because of improved screening procedures.
WebMD Medical Reference from Healthwise
May 18, 2011
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