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目的了解绵阳市、县两级男男性行为人群(MSM)的人口学特征、艾滋病知识、相关行为及疫情现状。方法以绵阳市辖区内MSM为对象,应用滚雪球抽样法,在固定场所,知情同意下招募调查对象,进行自填式匿名行为学调查和生物学检测。结果调查MSM 833人,其中市级267人,县级566人。县级MSM年龄较小,文化程度低,未婚比例较高,与市级MSM比较存在统计学差异(均P<0.05)。艾滋病知识知晓率市级为99.6%(266/267),高于县级的97.0%(549/566)(P<0.05)。市、县级MSM寻找性伴场所分别为:酒吧型8.2%(13/159)、28.5%(121/424),浴室型1.9%(3/159)、20.5%(87/424),公园型19.5%(31/159)、3.1%(13/424),网络型64.2%(102/159)、36.3%(154/424),家庭型6.3%(10/159)、11.6%(49/424)(P<0.05)。市、县级MSM分别有66.9%(99/148)、52.2%(224/429)在当地寻找性伴,24.3%(36/148)、33.8%(145/429)在郊县及绵阳城区,8.8%(13/148)、14.0%(60/429)在成都及其他地区(P<0.05)。市级MSM中,有91.0%(243/267)的人近6个月有男性肛交,高于县级的83.0%(470/566);近1周肛交次数≥2的,县级为35.1%(162/462),高于市级的26.5%(61/230)(P<0.05),不同性伴性行为保护性差异无统计学意义(P>0.05)。市、县级MSM艾滋病病毒(HIV)感染率分别为4.5%(12/267)、2.2%(12/534),梅毒感染率分别为7.1%(19/267)、2.6%(7/267)。结论市、县级MSM具有不同的人口学特征和HIV/梅毒流行现状及流行因素,应有针对性地开展防治工作。
Objective To understand the demographic characteristics, AIDS knowledge, related behaviors and epidemic situation of men who have sex with men (MSM) in Mianyang city and county level. Methods Taking MSM in Mianyang city as an example, the snowball sampling method was used to survey subjects in fixed places and informed consent for self-contained anonymous behavior investigation and biological testing. Results A total of 833 MSMs were investigated, including 267 municipal-level and 566 county-level. County-level MSMs are younger, have a lower level of education, and have a higher percentage of unmarried people, with statistical differences (P <0.05). The awareness rate of HIV / AIDS knowledge was 99.6% (266/267), higher than the 97.0% (549/566) at county level (P <0.05). The city and county-level MSM looking for partner places were: bar type 8.2% (13/159), 28.5% (121/424), bathroom type 1.9% (3/159), 20.5% (87/424), park type 19.5% (31/159), 3.1% (13/424), 64.2% (102/159), 36.3% (154/424), family type 6.3% (10/159), 11.6% (49/424 ) (P <0.05). 66.9% (99/148) municipalities and county-level MSMs, 52.2% (224/429) were seeking sexual partners locally, 24.3% (36/148) and 33.8% (145/429) in suburban and Mianyang urban areas, 8.8% (13/148), 14.0% (60/429) in Chengdu and other regions (P <0.05). Among municipal MSMs, 91.0% (243/267) had anal males in the past 6 months, up from 83.0% (470/566) at the county level; 35.1% were county-level with more than 2 anal smokers in the past week (162/462) and 26.5% (61/230) higher than the municipal level (P <0.05). There was no significant difference in the protective effect between different sex partners (P> 0.05). The MSM HIV prevalence rates in cities and counties were 4.5% (12/267), 2.2% (12/534) and syphilis infection rates were 7.1% (19/267), 2.6% (7/267) . Conclusions MSM in cities and counties have different demographic characteristics and HIV / syphilis epidemic status and epidemic factors, and should be targeted to carry out prevention and treatment work.