绵阳市安县男男性行为者HIV知识与行为及感染现状调查分析

Knowledge of HIV,behavior and infection status of MSM at an county in Mianyang,China

目的了解绵阳市安县男男性行为人群(MSM)艾滋病病毒(HIV)感染相关防治知识、性行为特征及感染现状,以指导防治措施的制定。方法 2011年4～9月,采用滚雪球抽样方法,在知情同意下,在一固定茶园,结合社区干预活动,每月1次进行MSM的招募和现场自填式匿名行为学调查,并对调查对象采血进行HIV检测。结果共调查89人,平均年龄(23.4±5.5)岁,高中或中专文化63人(70.8%),未婚81人(91.0%)。HIV知识得分671分,总知晓率94.2%;近1周平均肛交(1.3±1.1)次,年龄较小者肛交次数较多(χ2=10.119,P=0.006)。近6月有男性肛交行为者76人(85.4%),每次使用安全套30人(39.0%),近1次男性肛交使用安全套54人(70.1%);近6月、近1次肛交安全套使用率均随年龄增加而下降(χ2值分别为4.263、8.259,P值分别为0.039、0.004)。近6月5人有异性性行为(5.6%),每次使用安全套1人(20.0%)。HIV确证阳性5人,感染率为5.6%。结论绵阳市安县MSM人群HIV知晓率较高,安全套使用率较低,知识与行为分离明显,HIV感染率较高,应加大干预力度。

Objective To investigate the MSM（men who have sex with men）population for their knowledge about human immunodeficiency virus（HIV）,their sexual behavior and HIV infection status at an county of Mianyang,China.Methods Snowball sampling was used to collect samples.MSM subjects were informed with consent and recruited anonymously.Results A total of 89 people were recruited with majority as young adults.All subjects were unmarried of high school graduates or with associate degrees.94.2% has some know-ledge about HIV transmission;the frequency of anal sex is（1.3±1.1） times during the previous week;the younger the age,the more frequent of anal sex（χ2=10.119,P=0.006）.85.4% of them had the behavior of male anal sex with the rate of using condom each time at 39.0%.The rate of using a condom last time is 70.1%.Moreover,the anal sex condom use rates dropped with age either in the last 6 months or in the last time（χ2=4.263,8.259;P=0.039,0.004,respectively）.In the last 6 months,5.6% of the them had the behavior of heterosexual sex with the rate of using a condom each time at 20.0%.HIV infection was confirmed positive in 5 persons（5.6%）.Conclusions MSM population are highly aware of HIV infection but still with low condom use,indicating a significant separation between knowledge and behavior.The prevalence of HIV infection in the MSM population of Mianyang is high and effective intervention measures should be taken.