2010-2012年芜湖市男男性行为者人群艾滋病血清学及行为学调查分析

Survey and analysis on the prevalence of HIV and AIDS-related behaviors among men who have sex with men in Wuhu from 2010 to 2012

目的了解男男性行为者艾滋病病毒(human immunodeficiency virus,HIV)感染率和行为学特征,为在该人群中开展更有效的艾滋病预防控制工作提供依据。方法用分类滚雪球的抽样方法对男男性行为者(men who have sex with men,MSM)进行匿名问卷调查,同时采集外周血样进行HIV和梅毒血清学检测。结果 2010-2012年分别调查了422人,422人和434人,3次调查中调查对象的艾滋病知识知晓率无差异,调查对象HIV和梅毒确认检出率呈增高趋势,最近一次与同性发生性行为时安全套使用率差异有统计学意义(χ2=128.39,P<0.001),最近半年与同性性行为均用安全套的率差异无统计学意义(χ2=0.83,P=0.660),最近半年与异性发生性行为比例呈下降趋势。接受艾滋病相关服务者所占比例呈增加趋势(χ2=44.50,P<0.001)。结论芜湖市MSM人群HIV感染率高,存在高危行为,应进一步加强干预工作。

Objective To study the prevalence of HIV infection and sexual behaviors among MSM （ men who have sex with men） and to provide evidence for prevention and control of AIDS among them. Methods Data from MSM was collected by using classification snowball sampling and questionnaires, and their blood specimens were tested for HIV and syphilis antibodies. Results 422,422 and 434 MSM were investigated, respectively. The rate of the AIDS-related knowl- edge was not significantly different among 3 investigations. There was increasing trend in the prevalence of HIV and syphilis antibodies. There was a significant difference （x^2 = 128.39,P 〈0. 001 ） in the rate of condom use at the last time. The rate of MSM who had sex with female showed descending trend. The rate was increasing about the reception of HIV/AIDS related services in MSM （ x^2 = 44. 50, P 〈 0. 001 ）. Conclusions The high rate of HIV infection and the high risk behaviors are observed among MSM in Wuhu, thus we should take measures to strengthen the high risk behavior intervention.