目的 了解辽宁省大连市男男性行为人群(MSM)行为学特征及艾滋病病毒(HIV)、丙型肝炎(HCV)和梅毒感染率,探索HIV感染的影响因素。方法采用定向抽样方法招募MSM,进行面对面的问卷调查,并采血样进行HIV、梅毒和HCV检测。结果 共招募932名MSM,HIV抗体阳性率3.43%(32/932),梅毒血清学阳性率12.12%(113/932),HCV抗体阳性率1.07%(10/932);最近6个月,88.73%(827/932)的调查对象曾经与男性发生过肛交;其中每次使用安全套的占52.18%;多因素Logistic回归模型提示,受教育程度低、外地户籍、最近6个月为男性提供商业性服务的男性、梅毒抗体阳性的MSM其HIV感染的风险高;最近1年接受过HIV抗体检测是HIV感染的保护因素。结论 大连市MSM HIV感染率高,高危行为普遍存在。
Objective To examine the human immunodeficiency virus(HIV)risk behaviors,HIV,hepatitis C virus (HCV),and syphilis infection rates among men who have sex with men(MSM)in Dalian city and to explore the influencing factors of HIV infection among them. Methods A face-to-face questionnaire interview was conducted among MSM recruited with snowball sampling method and the blood samples were collected from the participants for the test fo HIV, syphilis,and HCV. Results A total of 932 MSM were recruited.The prevalence rates of HIV,syphilis,and HCV were 3.42% (32/932),12.12% (113/932),and 1.07% (10/932).In the past 6 months,88.73% (827/932)of the MSM investigated had anal sex with males.Among them,only 52.18% reported consistent condom use during anal intercourse. Multiple logistic regression analyses indicated that lower education background,floating population,commercial sex with men in the past 6 months,and syphilis infection were risk factors of HIV infection.Whereas having HIV test in the last year was a protective factor. Conclusion A high HIV infection rate and high risk behaviors are observed among MSM in Dalian.