There is no vaccine against HIV infection and AIDS treatment. To prevent the spread of HIV:  Consider the drug Truvada. Drugs may reduce the risk of sexually transmitted HIV infection in people at very high risk. You must take it every day. It does not prevent other sexually transmitted diseases (STIs), so you should always have safe sex.   Tell your sexual partners if you have HIV. It is important to tell all your current and past sexual partners that you are HIV-positive. They must be tested. Use a clean needle. If you use a hypodermic needle, make sure it is sterile and do not let go. Use needle exchange programs in your community and consider using drug-related assistance. If you are pregnant, contact your doctor immediately. If you are HIV-positive, you can pass the infection on to your child. However, if you are treated during pregnancy, you can significantly reduce the risk to your child. Consider male circumcision. There is evidence that circumcision can help reduce the risk of HIV infection in men.