内蒙古自治区部分城市男男性接触者艾滋病综合干预效果评价

Evaluation on the comprehensive acquired immunodeficiency syndrome intervention program conducting inmen who have sex with men population in Inner Mongolia

目的评价对男男性行为者（MSM）人群的艾滋病综合干预工作开展1年的效果。方法在内蒙古呼和浩特市、包头市开展MSM人群的综合干预，通过滚雪球法分别于2008年5月、2009年56月对706名和767名MSM对象进行问卷调查，同时抽取5mL静脉血，检测HIV感染状况，进而评价干预效果。采用χ^2检验进行统汁学分析。结果经过干预，调查对象艾滋病知晓率从70．7％（499／706）升至81．7％（627／767）（χ^2=25．004，P〈0．01）；与男性发生肛交行为时，最近6个月安全套使用率从38．0%（254／668）升至45．3％（346／764）（x^2=8．269，P〈0．05）；最近6个月曾与多于5个不同的男性发生过性行为的人员比例，从2008年5月的42．8％降至2009年5～6月的24．6％（x^2=55．348，P〈0．01）。2008年5月MSM人群男性性伴数的中位数为3，至2009年5-6月下降为2，但2次调查MSM人群HIV感染率均为1．7％。结论通过对MSM人群的综合干预，促井了MSM人群掌握艾滋病知识并采用安全性行为。

Objective To evaluation the comprehensive acquired immunodeficiency syndrome （AIDS） intervention program conducting in men who have sex with men （MSM） population living in Inner Mongolia Autonomous region. Methods A comprehensive intervention program was carried out among MSM groups in Hohhot and Baotou City. Seven hundred and six and 767 MSM were enrolled for investigation through the snowball method during May 2008 and May to June 2009, respectively. At the same time, 5 mL intravenous blood sample was collected from each subject for human immunodeficiency virus （HIV） detection and intervention effect evaluation. Data were analyzed by X^2 test. Results After intervention, the awareness rate of HIV/AIDS knowledge increased from 70.7% （499/706） to 81.7%（627/767） （X^2= 25.004, P〈0.01）. The rate of consistent condom use in the last six months increased from 38. 0% （254/668） to 45.3%（346/764） （X^2=-8. 269, P〈.0.05）. The percentage of subjects who had more than 5 different male sexual partner during the last 6 months significantly decreased from 42.8% to 24.6% （X^2=55. 348, P〈0.01）. The median number of sexual partners in MSM decreased from 3 in 2008 to 2 in 2009. The HIV infection rate was 1. 7%in both2008 and 2009. Conclusion The comprehensive intervention program among MSM population shows positive influence after one year implementation, which is helpful for increasing HIV/AIDS awareness and safe sex behavior in this population.