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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 understand the status and influencing factors of HIV infection in men who have sex with men (MSM). Methods From April to October 2014, the MSM of 9 counties (cities and districts) in Mianyang City was used as a target for recruiting and self-contained behavioral investigation and serology with the help of the snowball sampling method with fixed places and informed consent Detection. Results A total of 1 156 cases were confirmed and 46 cases were HIV positive. The positive rate was 4.0%. The positive rate in other areas was statistically significant (χ2 = 27.627, P <0.01). The highest was in Jiangyou City, followed by Mianyang City. Multivariate analysis showed that marital status divorced / widowed, unprotected anal intercourse in recent 6 months, syphilis infection was a risk factor for HIV infection, knowledge of AIDS knowledge, peer education in the past year was a protective factor (OR 10.957,3.169, P <0.05). Conclusions MSM HIV infection in Mianyang City is at a high level with obvious regional differences. Marital status, HIV / AIDS knowledge, unprotected sex and syphilis infection are associated with the risk of infection. Behavioral interventions should be targeted.