The incubation period of AIDS is 7-8 years on average, and can be as short as a few months to as long as about 15 years. The length of the incubation period is related to the number and type of viruses infecting the patient, the route of infection, the immune status of the body, individual differences, nutritional conditions and many other factors. It is generally believed that the incubation period is shorter for those infected by the blood route, averaging about 2 years, and slightly longer for those infected by the sexually transmitted route, averaging about 8 years, but the incubation period is shorter for gay men infected, generally about a year and a half. If you have a high-risk behavior, you must go to the hospital in time to check whether you have been infected with AIDS, generally about six months after the high-risk sexual behavior to review the AIDS can be confirmed.