目的：分析银川市2008～2012年男男性接触者（M SM ）艾滋病流行趋势及性行为特征变化情况，为实施有效的干预措施和防治对策提供依据。方法收集2008～2012年该市MSM人群调查资料，对人类免疫缺陷病毒（HIV）感染状况及性行为进行分析。结果2008～2012年共计调查了1644名M S M人员。最近1次同性发生性行为安全套使用率为73．5％～80．2％，最近6个月同性性行为安全套每次均使用有上升趋势，2012年与2008年比较有统计学差异（ P＜0．05）。 H IV感染率及90％ C I分别为2．6％（1．1～4．0）、4．5％（2．5～7．5）、5．7％（6．6～7．8）、3．8％（2．2～5．3）和7．0％（4．9～9．1），2012年较2008年增加明显（P＜0．01）；梅毒感染率2009年较2008年有所上升（P＜0．01），2012年较2010年下降（P＜0．01）。结论银川市MSM 人群HIV感染率有上升趋势，应采取有效干预措施，促进安全性行为，遏制HIV在MSM人群中进一步蔓延。%Objective To analyzes the epidemic trend and sexual behavior changes among men who have sex with men (MSM ) in Yinchuan city so as to provide scientific evidence for the future development of prevention and control strategies .Methods A cross-sectional survey was conducted and data about the sexual behavior as well as trend of HIV epidemic among MSM from 2008 to 2012 were collected and analyzed .Results A total of 1 644 MSM were recruited from 2008 to 2012 .The MSM condom use rate in last time homosexual sex fluctuated between 73 .5% -80 .2% ,and their condom use rate in every time was increasing significant-ly(P<0 .05) from 54 .3% in 2012 to 44 .0% in 2008 .The HIV prevalence and 90% CI was 2 .6% (1 .1-4 .0) ,4 .5% (2 .5-7 .5) , 5 .7% (6 .6-7 .8) ,3 .8% (2 .2-5 .3) and 7 .0% (4 .9 -9 .1) respectively .The HIV prevalence was increasing significantly (P<0 . 01) from 7 .0% in 2012 to 2 .6% in 2008 .Syphilis prevalence was increasing significantly (P<0 .01) from 9 .0% in 2009 to 2 .9%in 2008 ,then decreasing significantly (P<0 .01) from 6 .3% in 2012 to 13 .6% in 2010 .Conclusion The HIV infection rate have a rising trend among MSM in Yinchuan city .More effective intervention measures should be taken to promote safe sex and curb the AIDS epidemic spread among MSM .
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