云南省某县HIV感染者Ⅱ型单纯疱疹病毒感染及高危性行为研究

摘要

目的 了解云南省某县HIV感染者中Ⅱ型单纯疱疹病毒(HSV-2)感染率、HSV-2感染相关因素及高危性行为情况.方法 从常规随访的HIV感染者中招募研究对象,问卷调查收集人口学、行为学信息,采集血标本检测HSV-2抗体和CD_4~+T淋巴细胞计数.结果 共招募研究对象300人,其中105人检测为HSV-2抗体阳性,感染率为35.0%.多因素logistic回归模型显示,傣族(OR=0.300,95%CI:0.152～0.593)和景颇族(OR=0.376,95%CI:0.167～0.850)HIV感染者HSV-2感染风险低于汉族;经性途径感染HIV者HSV-2感染风险高于经注射吸毒感染HIV者(OR=4.244,95%CI:1.924～9.364).105人合并感染HIV和HSV-2,其中60人最近3月内有性行为,未坚持使用或不使用安全套者占有性行为者的41.7%,主要见于婚内性行为.结论 HIV感染者中HSV-2感染率较高,HIV/HSV-2合并感染者中有不安全性行为者比例高.%Objective To explore the sero-prevalence and risk factors for herpes simplex virus 2 (HSV-2) infection and unprotected sexual behavior in an ethnically diverse population of HIVinfected subjects in a county of Yunnan province. Methods HIV-infected individuals attending for routine follow-up by local Center for Disease Control and Prevention (CDC) were recruited to participate in the study under 'informed consent'. A face-to-face questionnaire interview was administered to each participant. Blood was drawn for HSV-2 testing by HerpeSelect HSV-2 ELISA (Focus Diagnostics) and CD_4~+ T counting. Results A total of 300 HIV-infected individuals participated in the study. The mean age of the subjects was 37.6 years with 76.7% as males. Ethnically, Han, Dai and Jingpo accounted for 44.3%, 37.3% and 16.0% of the sample, respectively. Half of the subjects reported HIV acquisition through injection drug use. The sero-prevalence of HSV-2 was 35.0%. Results from multiple logistic regression analysis indicated that individuals who acquired HIV through heterosexual contact were more likely to be HSV-2 positive than those who acquired HIV through injection drug use (OR=4.244,95%CI: 1.924-9.364),whereas Dai (OR=0.300,95% CI: 0.152-0.593) and Jingpo (OR=0.376, 95% CI: 0.167-0.850) were less likely to be HSV-2 positive than the Hans. Among 105 people who were co-infected with HIV/HSV-2, 60 had sexual intercourses in the past 3 months and 41.7% of them reported no or inconsistent use of condoms. Most unprotected sexual contacts occurred within married couples. Conclusion HSV-2 infection was highly prevalent among HIV-infected individuals in this county, and a significant proportion of HIV/HSV-2 co-infected subjects engaged in unprotected sex. HSV-2 testing, behavioral and biomedical interventions among HIV-infected individuals and their sexual partners should be involved in the local HIV prevention and control programs.