Wearing a condom reduces the incidence of HIV, but does not provide a 100% guarantee of non-infection. This is because condoms may break and fall off during sexual intercourse, a situation that carries a risk of HIV infection. In addition to reducing the risk of AIDS, condoms also reduce the risk of other sexually transmitted diseases, such as hepatitis B, hepatitis C, syphilis, AIDS, condyloma acuminatum and other diseases have a certain preventive and protective effect. So for high-risk groups, you need to wear a condom when having sex. The most important thing is to be clean and have a regular sexual partner, so that basically there will be no associated sexually transmitted diseases.