绵阳市2014年男男性行为人群HIV感染现状及影响因素分析

HIV infection among the population of men who have sex with men in 2012 in Mianyang of China

目的了解男男性行为人群（men who have sex with men,MSM）艾滋病病毒（HIV）感染现状及影响因素。方法 2014年4~10月,以绵阳市9个县（市、区）MSM为对象,在固定场所和知情同意下,用滚雪球抽样法,进行调查对象招募和自填式行为学调查及血清学检测。结果共检测1 156例,HIV确证阳性46例,确证阳性率4.0%;不同地区的确证阳性率差异有统计学意义（χ2=27.627,P〈0.01）,江油市最高、其次是绵阳城区。多因素分析结果,婚姻状况离异/丧偶、近6月无保护性肛交、梅毒感染是HIV感染的危险因素,知晓艾滋病知识、近1年接受过同伴教育是保护因素（OR分别为10.957、3.169、3.968、0.104、0.327,P均〈0.05）。结论绵阳市MSM艾滋病感染处于较高水平,地区差异明显,婚姻状况、艾滋病知识、无保护性行为和梅毒感染等与感染风险相关,应针对性开展行为干预。

Objective To study the current status of human immunodeficiency virus（HIV）infection among men who have sex with men（MSM）in Mianyang of China. Methods Investigation was perform from April to October of 2014 in Mianyang city including all nine surrounding counties.MSM subjects were recruited at a fixed place with informed consent.Snowball sampling was used to conduct the survey. Results A total of1156 MSMs were included and 46 were confirmed as HIV-positive.The positive rate was 4%.There were significant differences in different Regions（χ2=27.627,P〈0.01）with Jiangyou city as the highest,followed by the main city of Mianyang.Multivariate analysis showed that the divorced/widowed marital status,having anal sex without protecting in the last 6 months and syphilis infection were the risk factors of HIV infection.Awareness of AIDS knowledge and received peer education were the protective factors（OR=3.769,10.957,3.968,0.104 and 0.327,respectively;P〈0.05）. Conclusions The HIV infection rate of MSM in Minayang of China is at a relatively high level.Regional differences are obvious.The risk of infection was related with marital status,AIDS knowledge,sex without protecting and syphilis infection.