Condoms can prevent AIDS. Condoms can significantly reduce the chance of HIV infection, but of course, you need to pay attention to the process of wearing condoms: first, to prevent condoms from breaking; second, to prevent condoms from falling off during sexual intercourse, otherwise there is also a risk of HIV infection. For AIDS patients, timely antiviral treatment is needed. After antiviral treatment, the number of HIV viruses in most patients will drop significantly. The size of the infectiousness is also related to the number of HIV, some patients have good treatment effect and the number of HIV is zero, this kind of patients basically have no infectiousness, which is often said to have reached the standard of clinical cure.