绵阳市男男性行为人群队列基线HIV/梅毒感染及影响因素分析

目的了解绵阳市男男性行为者(MSM)艾滋病感染现状和影响因素。方法采用应答推动抽样法(RDS),招募符合条件的MSM进行相关行为的寻问式匿名调查和检测前咨询、采集血液进行HIV/梅毒等血清学检测,建立随访队列。结果共调查采血400例,艾滋病病毒(HIV)感染率7.8%,梅毒累计感染率23.8%、现症感染率12.7%,HIV合并梅毒现症感染、梅毒累计感染的比例分别为16.7%和40.0%。单因素分析,不同经济收入、寻找性伴场所、近6个月性伴数、近6个月性伴主要来自偶然性伴、首次性交年龄、近6个月性伴最大年龄,是否近1年接受过同伴教育、梅毒感染(累计感染)者HIV感染率,不同年龄、职业、婚姻状况、性取向、经济收入、寻找性伴场所、首次性交年龄、距首次性交时间、近6个月性伴最大年龄,是否近6个月性伴主要是妻子、在家认识性伴者等梅毒感染率(累计感染率)有关。多因素分析,感染HIV的独立影响因素包括浴室/公园/网络为主要性伴场所场所、近6月性伴数≥6、首次性交年龄≥19岁、近6月性伴主要来自偶然性伴。梅毒感染(累计感染)的独立影响因素包括离异/丧偶/同居、性伴最大年龄≥26岁、近6月主要在家里认识性伴、浴室/公园寻找性伴。结论绵阳市MSM人群HIV/梅毒感染率较高,受多性伴、性伴来源、性伴年龄特征等因素影响,应针对性加大干预力度。

Analysis on HIV/Syphilis Infection with Queue Baseline of MSM and the Influencing Factors in Mianyang City

Objective To find out the current situation and the factors influencing HIV/Syphilis infection among MSM( men who have sex with men) in Mianyang. Methods To adopt the Respondent-driven Sampling (RDS) through which eligible MSM are recruited anonymously to take the HIV/syphilis test by blood, and found the follow-up cohort of them. Results Four hundred people are surveyed; infection rate of HIV is 7.8 percent, accumulative infection rate of syphilis is 23.8 percent, current infection rate is 12.7 percent, HIV/syphilis current and accumulative infection rate is 16.7 percent and 40.0 percent. Single factor analysis: the difference of the infection rate of HIV/syphilis (accumulative infection) in people of different incomes, ages, occupations, marriage situation, having different places to find sex partners, having a number of sex partners in the last 6 months, having one night stand with most of the sex partners in the last 6 months, age of having the first sex act, having maximum age of the sex partners in the last 6 months has a statistic significance. Multi factors analysis: the independent factors influencing HIV infection rate are finding sex partners in public bathrooms, parks, on the Internet, having a number of sex partners more than 6.The independent influencing factors of syphilis infection (accumulative infection) are having divorces, losing one’s husband/wife, maximum age of sex partners is more than 26, knowing sex partners mainly at home /bathhouse/parks. Conclusion The infection rate of HIV/syphilis of MSM in Mianyang is relatively high; the pointed references should therefore be reinforced.