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目的了解四川省绵阳市不同地区男男性行为者(MSM)艾滋病病毒(HIV)/梅毒感染现状,分析影响因素。方法 2013年4-10月,以绵阳市辖区所有9个县(市、区)MSM为对象,在固定场所知情同意下,应用滚雪球抽样法,进行调查对象招募和自填式匿名行为学调查及生物学检测。结果共调查861例,HIV确证阳性29例,阳性率3.8%;梅毒阳性15例,感染率2.2%;不同地区差异有统计学意义(分别有χ2=15.035、20.361,分别有P=0.035、0.002)。多因素分析结果,年龄≥30岁(OR=2.766)、户籍外省(OR=4.348)、地区涪城区/江油市(OR=2.527)、近6月肛交无保护性(OR=3.104)、寻找性伴场所浴室/家庭型(OR=2.825)、近1年诊断过性病(OR=4.630)是HIV感染,年龄≥30岁(OR=3.744)、近6月肛交无保护性(OR=5.464)、近1年诊断过性病(OR=27.778)是梅毒感染有统计学意义的危险因素(均有P<0.01或P<0.05)。结论绵阳市MSM人群HIV/梅感染仍处于较高水平,地区差异明显。感染风险与人口学特征、性行为和性病感染相关,应针对性开展行为干预。
Objective To understand the status of HIV / syphilis infection in MSM in different areas of Mianyang City, Sichuan Province, and to analyze the influential factors. Methods From April to October 2013, the MSM of all 9 counties (cities and districts) in Mianyang City was used as target. With the informed consent of fixed places, snowball sampling method was used to investigate the recruitment and self-contained anonymous behavior of respondents Biological testing. Results A total of 861 cases were confirmed, of which 29 were HIV-positive. The positive rate was 3.8%. Syphilis was positive in 15 cases and the infection rate was 2.2%. There were significant differences in different regions (χ2 = 15.035 and 20.361, respectively, P = 0.035 and 0.002 ). Multivariate analysis showed that the average age of the patients was ≥30 years old (OR = 2.766), other provinces (OR = 4.348), Fucheng District / Jiangyou City (OR = 2.527) (OR = 4.630) were HIV-infected, with a mean age of more than 30 years (OR = 3.744) and no protective anal sex in the last 6 months (OR = 5.464) The diagnosis of STD in the past year (OR = 27.778) was a statistically significant risk factor for syphilis infection (both P <0.01 or P <0.05). Conclusion The prevalence of HIV / PMV in MSM population in Mianyang City is still at a high level, with significant regional differences. Risk of infection is associated with demographic characteristics, sexual behavior, and STD infection and behavioral interventions should be targeted.