摘要
According to Joint United Nations Program on HIV/AIDS （UNAIDS） report in 2009, the estimated number of people living with HIV-1 is 33.4 million, and half of the infected adults （aged 15-49 years） are women, who acqluired HIV-1 mainly through heterosexual exposure. In China, HIV-1 transmission through sexual contact has also increased rapidly, and has reached over 70% in overall cases; heterosexual transmission accounted for 40% and men who had sex with man （MSM） for 32.0%.
According to Joint United Nations Program on HIV/AIDS （UNAIDS） report in 2009, the estimated number of people living with HIV-1 is 33.4 million, and half of the infected adults （aged 15-49 years） are women, who acqluired HIV-1 mainly through heterosexual exposure. In China, HIV-1 transmission through sexual contact has also increased rapidly, and has reached over 70% in overall cases; heterosexual transmission accounted for 40% and men who had sex with man （MSM） for 32.0%.
