摘要
Men who have sex with men （MSM） are at high risk for infection with human immunodeficiency virus type 1 （HIV-1） because of risk behaviors such as multiple partners and unprotected anal intercourse （UAI）. Approximately 5% to 10% of all new HIV-1 infections are transmitted by male homosexual behaviors globally.1 The HIV epidemic in China is currently spreading from high risk groups to the general population.
Men who have sex with men （MSM） are at high risk for infection with human immunodeficiency virus type 1 （HIV-1） because of risk behaviors such as multiple partners and unprotected anal intercourse （UAI）. Approximately 5% to 10% of all new HIV-1 infections are transmitted by male homosexual behaviors globally.1 The HIV epidemic in China is currently spreading from high risk groups to the general population.
