Johns Hopkins Bloomberg School of Public Health, Department of Epidemiology, Baltimore, Maryland, United States of America.
PLoS One. 2012;7(8):e43071. doi: 10.1371/journal.pone.0043071. Epub 2012 Aug 24.
Men who have sex with men (MSM) are at high risk for HIV infection. MSM in Central Asia, however, are not adequately studied to assess their risk of HIV transmission.
This study used respondent driven sampling methods to recruit 400 MSM in Almaty, the largest city in Kazakhstan, into a cross-sectional study. Participation involved a one-time interviewer-administered questionnaire and rapid HIV screening test. Prevalence data were adjusted for respondent network size and recruitment patterns. Multivariate logistic regression was used to investigate the association between HIV and selected risk factors, and unprotected anal intercourse (UAI) and selected risk factors.
After respondent driven sampling (RDS) weighted analysis, 20.2% of MSM were HIV-positive, and 69.0% had unprotected sex with at least one male partner in the last 12 months. Regression analysis showed that HIV infection was associated with unprotected receptive anal sex (AOR: 2.00; 95% CI: 1.04-3.84). Having unprotected anal intercourse with male partners, a measure of HIV risk behaviors, was associated with being single (AOR: 0.38; 95% CI: 0.23-0.64); very difficult access to lubricants (AOR: 11.08; 95% CI: 4.93-24.91); STI symptoms (AOR: 3.45; 95% CI: 1.42-8.40); transactional sex (AOR: 3.21; 95% CI: 1.66-6.22); and non-injection drug use (AOR: 3.10; 95% CI: 1.51-6.36).
This study found a high HIV prevalence among MSM in Almaty, and a population of MSM engaging in multiple high-risk behavior in Almaty. Greater access to HIV education and prevention interventions is needed to limit the HIV epidemic among MSM in Almaty.
男男性行为者(MSM)感染 HIV 的风险较高。然而,中亚的 MSM 并未得到充分研究,无法评估他们 HIV 传播的风险。
本研究采用受访者驱动抽样方法,在哈萨克斯坦最大城市阿拉木图招募了 400 名 MSM,进行了一项横断面研究。参与研究需要进行一次性的访谈式问卷调查和快速 HIV 筛查测试。采用受访者网络规模和招募模式对患病率数据进行调整。采用多变量逻辑回归分析 HIV 与选定风险因素之间的关系,以及无保护肛交(UAI)与选定风险因素之间的关系。
经过受访者驱动抽样(RDS)加权分析,20.2%的 MSM 为 HIV 阳性,69.0%的 MSM 在过去 12 个月内与至少一名男性伴侣发生过无保护的肛交行为。回归分析显示,HIV 感染与无保护的接受性肛交行为有关(AOR:2.00;95%CI:1.04-3.84)。与男性伴侣发生无保护的肛交行为是 HIV 风险行为的一个指标,与单身状态(AOR:0.38;95%CI:0.23-0.64);难以获得润滑剂(AOR:11.08;95%CI:4.93-24.91);性传播感染症状(AOR:3.45;95%CI:1.42-8.40);性交易(AOR:3.21;95%CI:1.66-6.22);以及非注射吸毒行为(AOR:3.10;95%CI:1.51-6.36)有关。
本研究发现,阿拉木图的 MSM 中 HIV 感染率较高,且存在一群 MSM 从事多种高危行为。需要增加对 MSM 的 HIV 教育和预防干预措施,以限制阿拉木图 MSM 中的 HIV 流行。