Department of Epidemiology, University of California, Los Angeles, 90095-1772, USA.
J Acquir Immune Defic Syndr. 2010 Feb;53 Suppl 1(Suppl 1):S74-80. doi: 10.1097/QAI.0b013e3181c7dd16.
To assess the prevalence of HIV and selected sexually transmitted diseases (STDs) among men who have sex with men (MSM) in Chengdu, China, and the risk factors associated with HIV infection.
A cross-sectional study using a snowball sampling method was conducted from March to July 2007. Participants were asked to complete a questionnaire about sexual history, high-risk behaviors, STD infection history, HIV knowledge and testing, and an assessment of depression. Blood samples were taken for antibody testing for HIV, herpes simplex virus 2 (HSV-2), and syphilis.
A total of 538 MSM were recruited, and 513 (95.4%) consented to complete the questionnaire. HIV, HSV-2, and syphilis prevalence were 9.1%, 24.7%, and 28.1%, respectively. The rate of consistent condom use was low and varied by types of sexual partners. The highest was with casual male partners (38.6%), and the lowest was with wife or girl friend (17.8%). Money boys were 6 times more likely to be infected with HIV compared with clerks/students. Infection with either HSV or syphilis increased the risk of HIV infection more than 4-fold.
The prevalences of HIV and STDs were high among MSM in Chengdu. To prevent HIV/STDs, campaigns promoting condom use are needed not only to boost the frequency of condom use but also to educate MSM about proper condom use.
评估中国成都男男性行为者（MSM）中 HIV 和某些性传播疾病（STD）的流行率，以及与 HIV 感染相关的危险因素。
采用滚雪球抽样方法，于 2007 年 3 月至 7 月进行了一项横断面研究。要求参与者填写一份关于性史、高危行为、STD 感染史、HIV 知识和检测以及抑郁评估的问卷。采集血样，用于检测 HIV、单纯疱疹病毒 2（HSV-2）和梅毒抗体。
共招募了 538 名 MSM，其中 513 名（95.4%）同意完成问卷。HIV、HSV-2 和梅毒的流行率分别为 9.1%、24.7%和 28.1%。 condom 的使用一致性较低，且因性伴类型而异。与随意性伴发生性行为时 condom 的使用率最高（38.6%），与妻子或女友发生性行为时 condom 的使用率最低（17.8%）。与店员/学生相比，“钱男”感染 HIV 的风险高 6 倍。感染 HSV 或梅毒会使 HIV 感染的风险增加 4 倍以上。
成都 MSM 中 HIV 和 STD 的流行率较高。为预防 HIV/STD，不仅需要开展 condom 使用宣传活动来提高 condom 的使用频率，还需要对 MSM 进行正确使用 condom 的教育。
