重庆市男男性行为者艾滋病病毒和梅毒的感染情况及其影响因素

目的 了解重庆市男男性行为者(MSM)艾滋病病毒(HIV)和梅毒感染率及其影响因素.方法 通过2006年和2007年两次横断面调查,收集包括人口学、行为学、艾滋病知识、继往性传播疾病相关症状及HIV有关干预接受相关情况信息,并采集血液标本进行HIV和梅毒抗体检测.结果 共调查1773名MSM,HIV和梅毒感染率分别为10.6%和8.4%.在近6个月,约1/3的MSM有多性伴和无保护肛交行为;1/5的MSM有异性性行为.感染HIV的独立危险因素为:大龄(26～35岁:AOR=1.7,95%C1:1.1～2.6;＞35岁:AOR=2.3,95%CI:1.4～3.8)、文化程度低(AOR=2.3,95%CI:1.5～3.5)、多性伴(AOR=1.8,95%CI:1.2～2.8)、浴池/桑拿招募(AOR=2.3,95%CI:1.1～4.7)、有既往性病相关症状(AOR=1.8,95%CI:1.2～2.7)及梅毒感染(AOR=1.7,95%CI:1.1～2.9).结论 重庆市MSM人群HIV及梅毒感染率已达较高水平,多性伴、无保护肛交和异性性行为多见,应采取及时有效的干预措施.

HIV and syphilis infections among men who have sex with men in Chongqing municipality,China

Objective To examine tIle prevalence and predictors of HIV and syphilis infections among men who have sex with men(MSM)in Chongqing municipality.China.Methods Cross-sectional studies were conduced in three districts of Chongqing municipality from July to September,2006 and 2007,respectively.Questionnaire-based interviews were conducted to provide information on demographic characteristics,behaviors on sex and drug use,and HIV and sexually transmitted diseases(STD)related health services.Blood samples were tested for HIV and syphilis infections.Results Of 1773 panicipants.10.6%were HIV-positive and 8.4%were sero-positive for syphilis infection.Factors independently associated with HIV infection included older age(26-35 year:AOR=1.7,95%CI:1.1-2.6;＞35 years of age:AOR=2.3,95%CI:1.4-3.8),low level of education(AOR=2.3,95%CI:1.5-3.5),having had multiple male sex partners(AOR=1.8,95%CI:1.2-2.8),venues of recruitment from bathhouses/sauna (AOR=2.3,95%CI:1.1-4.7),with self-reported STD symptoms in the past 12 months(AOR=1.8,95%CI.1.2-2.7)and syphilis infeetion(AOR=1.7,95%CI:1.1-2.9).Conclusion The prevalence rates on both HIV and syphilis infections were considered to be high among MSM in Chongqing city.Unprotected anal sex and multiple sex partners were conqmon in this group.Education,condom promotion.combination of HIV and STD screening,and treatment to the diseases are essential to this population in Chongqing.However,MSM had not hitherto been perceived to be in the epidemic mainstream in this area.