摘要：

Objective To understand infectious situation of syphilis and AIDS virus among noncommercial men who have sex with man(MSM)and the level of safe sexual behavior in some metropolis in south China.Methods Answering the questionnaires through the network and accepting voluntarily the free Treponema Passive Particle Agglutinin(TPPA)and HIV tests.Results Among 88 cases of noncommercial MSM,the infection rate of SP and HIV reach 9.04% and 3.41% respectively,average number of male sex partners is 3,out of whom 76.1% have oral-intercourse,and 95.5% have anus-intercourse,and 76.1% have sex with strange men,and 55.7% have sex with women.The rate of using a condom each time and frequency are 6.8% and 21.6% respectively,the rate of those who never use a condom is 48.9%.Conclusion With the great active sex of the commercial and noncommercial MSM,the lack of safe action is the important factor that causes high syphilis infection,HIV infection begins to be transmitted between the noncommercial MSM and heterosexual perosn.

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