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《Preventive Medicine》 2018-10
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Incidence and influencing factors for HIV infection among men who have sex with men in Hangzhou

LI Xi-ting;LUO Yan;ZHANG Xing-liang;JIN Jie;XU Ke;LUO Wen-jie;LI Qing-chun;Department of HIV/AIDS and STDs Control and Prevention,Hangzhou Center for Disease Control and Prevention;  
Objective To study HIV incidence and related factors among men who have sex with men(MSM) in Hangzhou.Methods We conducted a prospective cohort study consisted of 523 HIV-negative MSM in Hangzhou.We collected their sociodemographic and behavior information by questionnaire and blood samples for HIV and syphilis detection at baseline and during follow-up period. HIV seroconversion was defined as the end point to calculate the HIV incidence. We analyzed the influencing factors for HIV infection among MSM by cox regression. Results We observed a total of 374 participants for 12 months, accounting for 71.51%. There were 16 HIV positive cases and the HIV incidence rate was 6.57/100 person-years.Multivariate cox regression analysis showed that less than 30 years old(HR=10.050, 95% CI: 2.576-39.212), living in Hangzhou for more than 2 years(HR=0.082,95%CI:0.020-0.341) and having unprotected anal intercourse with casual male partners in the past 3 months(HR=0.060, 95% CI: 0.019-0.188) were associated with HIV incidence. Conclusion HIV incidence among MSM in Hangzhou was relatively high. The MSM who were less than 30 years old,living in Hangzhou for less than 2 years and having unprotected anal intercourse with casual male partners have higher risk of HIV infection.
【Fund】: 浙江省医药卫生科技计划项目(2015KYA189);; 杭州市科技局社会发展项目(20160533B51)
【CateGory Index】: R512.91
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