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目的获得中山市男男性行为人群(MSM)行为学特征及HIV、HCV和梅毒感染率,探索其HIV感染的影响因素。方法 2009年通过自愿咨询检测门诊和当地同性恋组织招募MSM进行面对面的问卷调查和血清学检测。结果共招募207名MSM,HIV抗体阳性率5.3%(11/207),梅毒血清学阳性率2.4%(5/207),无HCV抗体阳性检出。最近6个月,78.7%(163/207)的调查对象曾经与男性发生过肛交;其中与2人及以上的男性发生肛交行为的占49.7%(81/163);发生肛交时,自我报告每次使用安全套的仅占34.4%(56/163)。多因素Logistic回归模型提示,最近6个月,发生肛交的男性性伴数越多,其HIV感染的风险性越高(AOR=1.22,95%CI:1.04～1.42);已婚或同居的MSM HIV感染的风险高于未婚、离异或丧偶的个体(AOR=4.32,95%CI:1.09～17.04)。结论中山市MSM HIV感染率高,高危行为普遍存在,亟需采取针对性的干预措施。
Objective To obtain the behavioral characteristics and the prevalence of HIV, HCV and syphilis among MSM in Zhongshan and to explore the influencing factors of HIV infection. Methods In 2009, face-to-face questionnaires and serological tests were conducted through recruitment of MSM through voluntary counseling and testing clinics and local homosexual organizations. Results A total of 207 MSM were recruited. The positive rate of HIV antibody was 5.3% (11/207) and the positive rate of syphilis serology was 2.4% (5/207). No HCV antibody was detected. In the recent 6 months, 78.7% (163/207) of the respondents had had anal sex with men; among them, 49.7% (81/163) had anal intercourse with men of 2 people or more; self-reported Only 34.4% (56/163) of condoms were used. Multivariate Logistic regression models suggested that the greater the number of male partners who had anal intercourse in the last 6 months, the higher the risk of HIV infection (AOR = 1.22, 95% CI: 1.04 to 1.42); MSM married or living together The risk of HIV infection was higher for unmarried, divorced or widowed individuals (AOR = 4.32, 95% CI: 1.09 to 17.04). Conclusion The prevalence of MSM HIV infection in Zhongshan City is high, and high-risk behavior is prevalent. It is urgent to take targeted interventions.