男男性接触者性伴网络特征与HIV传播

Characteristic of sexual partner network and HIV transmission among men who have sex with men

目的了解男男性接触者(MSM)性伴网络特征,探讨人类免疫缺陷病毒/性传播疾病(HIV/STDs)从该人群向普通人群传播的途径,为开展HIV/STDs的预防与控制提供依据。方法以同性恋酒吧为研究现场,以其中男男性接触者为对象进行匿名问卷调查。调查内容包括社会人口学特征、HIV/STDs感染状况、性伴类型及数量等。结果某市酒吧中MSM的HIV和STDs感染报告率分别为3.4%和10.3%;多性伴现象在MSM中普遍存在,且性伴类型广泛。在最近2个月中,50.0%的MSM有同性偶然性伴,17.8%有同性商业性伴,63.8%目前有同性固定性伴。曾有过异性性伴者为55.7%。拥有3种类型性伴者为19.5%,4种类型性伴者为12.6%。拥有不同类型性伴的MSM亚群之间相互关联,核心亚群为拥有异性性伴和拥有同性商业性伴亚群。结论MSM以多维的性伴网络相互连接,不仅在MSM人群内部具有HIV/STDs的多向传播通道,而且已经形成了向普通人群传播的桥梁。

Objective To determine the characteristic of sexual partner network among men who have sex with men （MSM）in gay bars and document HIV/STDs prevention and control. Methods A cross-sectional survey was conducted in gay bars including the demographic characteristics, HIV and STDs infection as well as the number and types of sexual partner. Results The self-reported prevalence of HIV and STDs was 3.4 % and 10.3 %, respectively, among MSM. Multiple sexual partners were common and there were various types of sexual partners. Of 174 participants, 50.0% and 17.8% had the same-sex casual sexual partner and the same-sex commercial sexual partner in the past 2 months, respectively, 63.8 % currently had the same-sex primary sexual partner, 55.7 % had female sexual partner during their lifetime. 19.5 % and 12.6 % had 3 and 4 types of sexual partner, respectively. The various sub-groups, which had different types of sexual partner, were correlative. The core subgroups were subgroup who had the female and sub-group who had the same-sex commercial partner. Conclusion MSM are connected with each other by multiple sexual partner network. There are not only multiple transmission of HIV/STDs among MSM, but also the transmission bridge of HIV/STDs has been developed from MSM to general population.