The source of HIV infection is people with HIV and people living with HIV. People with STDs may have other diseases, such as gonorrhea, syphilis, and condyloma acuminata are STDs. Such people may not have HIV, so they do not have the ability to transmit AIDS. Of course, in the process of sexual contact, some people may have a combination of multiple STDs, such as AIDS combined with syphilis, combined with gonorrhea, combined with condyloma acuminata, etc.. If this is the case, then it is also contagious. If there is no HIV, only other STDs, it is not infectious.