The only sure way to prevent HIV infection is not to have sex. If you do have sex, use a latex condom every time. Sharing needles is very dangerous. If you do share needles, call the National Rug and Alcohol Hotline (1-800-662-4357) to learn how to clean needles and works.
You can help protect yourself form HIV by following the safer sex guidelines for other STDs. Use condoms every time you have sex, no matter what kind of sex it is. If you use spermicides, use them with condoms, not in place of them.