how to prevent hiv
1 Oral sex is much less risky than anal or vaginal sex. 2  Anal sex is the most risky type of sex for HIV transmission. 3  Use condoms. 4  Use a condom correctly every time you have vaginal, anal, or oral sex. 5  Read this fact sheet from the Centers for Disease Control and Prevention (CDC) on how to use condoms correctly.
The surest way is to abstain from sexual intercourse and from sharing needles and works if you use steroids, hormones, or other drugs. Many people have been infected with HIV by sharing needles. If you are using needles for steroids, hormones, or other drugs. 1  Never share needles. 2  Get into a needle-exchange program. 3  Be sure to disinfect the needles you use.