天津市2008-2009年男男性行为者HIV新近感染状况调查

Survey on recent infection of human immunodeficiency virus among men who have sex with men in Tianjin during 2008-2009

目的了解天津市男男性行为者（MSM）中HIV新近感染及变化情况。方法收集2008--2009年天津市MSM人群连续三轮的横断面调查样本，应用BED—CEIA方法对HIV抗体确证阳性样本进行HIV新近感染检测，结合问卷信息，估算HIV新近感染率（现存率与发生率）。结果共检测样本1799份，三轮调查中HIV感染率依次为6．7％、8．6％和6．2％；新近感染现存率为2．7％、2．5％和2．8％。利用2008和2009年同期调查数据估算HIV年新近感染发生率分别为5．36％和5．52％。结论天津市MSM人群中HIV新近感染率处于稳定较高水平，应采取有效的干预措施以控制HIV的流行。

Objective To study the situation of HIV infections among men who have sex with men （MSM） in Tianjin during 2008-2009 and to provide reasonable evidence for intervention strategy. Methods Transect investigations in MSM were conducted three times during 2008-2009. Blood samples were collected and detected to identify the recent HIV infection with IgG-capture BEDenzyme immunoassay （BED-CEIA） before HIV incidence was estimated. Results 1799 specimens were tested and the HIV prevalence rates of each study were 6.7% , 8.6% and 6.2% , while the incidence rates were 2.7%, 2.5% and 2.8%, respectively. The estimated incidence rates among these testees were 5.36% and 5.52% per year in 2008 and 2009. Conclusion Results of this study showed that the HIV incidence stabilized at high level among MSM in Tianjin, calling for the effective interventions be taken for HIV/AIDS control and prevention.