Safer sex is an effective method of preventing the transmission of HIV.
The most important rule: condoms protect you during sex. In addition, you should not allow sperm to enter your mouth when having oral sex.
There are also other ways to reduce the risk of HIV infection, particularly in established relationships. That includes, for example, taking an HIV test together and agreeing not to take any risks outside the relationship.
Important to know: even safer sex is not 100% safe. Condoms can tear or come off, for example. This risk can be greatly reduced by knowing how to use condoms and practicing this. Safer sex is then really very safe.