HIV testing and sexual risks among migrant men who have sex with men: findings from a large cross-sectional study in Beijing,China

Despite the exacerbating HIV transmission among migrant men who have sex with men (MSM) in China, few epidemiological studies explore their HIV testing/risk profiles. We sought to explore sociodemographic/behavioral correlates of HIV/syphilis and HIV testing among migrant MSM. A study was conducted among 3,588 HIV-uninfected MSM. Participants were recruited via short message services, peer referral, web-advertisement and community outreach. HIV/syphilis infections were lab-confirmed. Migrant MSM were more likely to be HIV-infected compared to local MSM. Among 2,699 migrant MSM, HIV testing was associated with older age, living longer in Beijing, having ≥10 lifetime male sexual partners (LMSPs), having insertive anal sex; while being unemployed/retired and having condomless receptive anal sex (CRAS) were associated with a lower odds of HIV testing. Being married, living longer in Beijing, ever testing for HIV and having sex with women were associated with lower HIV odds; while being unemployed/retired, having higher HIV perception, having ≥ 10 LMSPs and having CRAS were associated a higher HIV odds. Increased likelihood of syphilis was associated with older age, being employed, higher HIV perception, having ≥10 LMSPs and having CRAS. Our study provides implications for targeted interventions to tackle HIV/STI risks and improve HIV testing among migrant Chinese MSM.     

HIV vulnerabilities and coercive sex at same-sex sexual debut among men who have sex with men in Beijing,China

Few studies have examined coercive sex and HIV vulnerabilities among men who have sex with men (MSM) in China. The present study seeks to compare individual characteristics between MSM who did and did not experience coercive sex at their MSM sexual debut and to identify HIV risk factors correlated with coercive sex at MSM sexual debut. In 2007, we recruited 167 MSM in Beijing, China by peer-referred social network sampling. Each participant then completed self-administered questionnaires regarding their sexual experiences and practices. Results show that 14% of participants reported coercive sex at MSM sexual debut, of whom 48% reported recent unprotected anal intercourse (UAI). Coercive sex at MSM sexual debut was significantly associated with UAI [adjusted odds ratio (AOR): 5.38, 95% confidence interval: 1.95–14.87] and lifetime number of male sex partners (AOR: 7.25, 95% CI: 2.39–22.01). Coercive sex is harming MSM in China and should be immediately addressed by researchers, public health officials, and MSM community stakeholders.     

男男性行为人群HIV感染者感染状态配对研究

该文综述了国外近年来在男男性行为人群(MSM)艾滋病病毒(HIV)感染者中,开展"感染状态配对"研究的相关文献,阐述了"感染状态配对"在降低HIV新发感染、促进咨询检测和性伴告知方面的积极意义,分析了在MSM HIV感染者中实施"感染状态配对"干预可能存在的问题,为在我国开展类似工作提供了参考信息。     

Community engagement among men who have sex with men living with HIV/AIDS in Taiwan

Community engagement was developed as a global principle in the provision of HIV/AIDS services, yet evidence-based research of implementation of the principle is lacking in Taiwan. This short report aims to understand factors associated with engagement in two types of activities with varying levels of visibility: HIV-related community events and HIV-related community action, in Taiwanese men who have sex with men (MSM) living with HIV. A cross-sectional survey was distributed to a purposive sample of participants recruited from AIDS service organizations (ASOs). Among participants (n?=?178), 63.6% were involved in HIV-related community events, while less than half (47.7%) were involved in HIV-related community action. In multivariable analysis, age, involvement in ASOs, and AIDS knowledge were positively associated with engagement in community events, and living in the north of Taiwan, years of infection, and self-stigma were negatively associated with this type of engagement. Few factors, with the exception of involvement in ASOs, were positively associated with engagement in HIV-related community action. To this end, ASOs appear to play a strong role in improving and organizing both types of community engagement in Taiwan. Future studies should evaluate tailored programs delivered through ASOs for strengthening community connectedness among younger, stigmatized, and longer diagnosed MSM living with HIV.     

HIV testing and HIV knowledge among men who have sex with men in Natal,Northeast Brazil

Background

Men who have sex with men (MSM) account for the highest prevalence of HIV in Brazil. HIV testing allows to implement preventive measures, reduces transmission, morbidity, and mortality.

MSM中HIV抗体阳性率及其影响因素分析

目的了解男男性行为人群（MSM）艾滋病病毒（HIV）的阳性检出率,探讨该人群感染HIV的影响因素。方法2012年1—12月,在武汉市动员MSM参加HIV抗体快速检测,并调查收集人口学和行为学信息,HIV抗体筛查阳性者接受确证检测。结果共有7123名符合条件的MSM参加了检测。分析表明,教育水平、现住址、过去3个月及最近1次肛交性行为安全套使用、找寻性伴地点、检测原因以及是否第1次参加HIV抗体检测,为影响MSM动员检测阳性发现的因素,差异均有统计学意义（P〈0．05）。其中,外地、过去3个月有时使用和最近1次没有使用安全套、在浴池找寻性伴、第1次参加检测和感觉不舒服而参加检测的MSM,HIV阳性检出的风险分别是参照组的1．830、3．082、3．530、2．762、1．943和6．141倍。结论需要综合考虑,调整动员检测模式,设计活动及分配资源,注重实际效果,从而最大限度发现地HIV阳性者。     

MSM中HIV阳性者性行为特征及其影响因素的研究进展

男男性行为人群(Men who have sex with men,MSM)艾滋病病毒(Human immunodeficiency virus,HIV)阳性者的性行为和心理特征,与一般的MSM有显著差异,他们的不安全性行为仍然广泛存在,但更倾向于寻找阳性性伴,并选择被动肛交方式来"自我降低传播风险"。针对这一群体的特点,艾滋病防控重点,应该重在阻止二代传播,提高感染者生活质量。     

86名男性性工作者AIDS相关情况调查

目的了解男性性工作者（MSW）的基本情况和艾滋病（AIDS）相关情况,探索适合在该人群中开展AIDS宣传教育和行为干预的模式,为今后的工作提供科学依据.方法在知情同意、保密和无伤害的原则下,采用个别访谈、填写调查问卷、发放健康就诊卡、敦促其到指定医院进行健康体检和免费咨询等方法,了解其基本情况和AIDS相关情况,用SPSS11.0对调查结果进行统计学分析.结果（1）在同意调查的86名MSW中,69名参加了调查问卷,其中年龄最小的17岁,最大的28岁,平均21.35岁;具有高中文化水平的＞50%;84.1%未婚.（2）愿接受艾滋病知识教育者占75.4%,获得艾滋病知识的途径来自报纸、杂志（55.1%）,电视、广播（37.7%）,医院、诊所（31.9%）;性生活的频率普遍偏高,1周内≥3～7次的占34.8%;安全套的使用率很低,最近一次性生活安全套使用率为23.2%;存在不同形式的吸毒现象.（3）86名MSW性病/艾滋病检测,查出梅毒5人,HIV抗体均为阴性.结论MSW人群具有更多的艾滋病传播危险因素,有关部门应提高重视程度,对他们应加强性病艾滋病教育和干预,提高其艾滋病知晓率和安全套使用率.     

性网络与男男性行为人群的HIV传播

性网络是男男性行为人群(MSM)经性途径传播艾滋病病毒(HIV)的直接通道。网络分析方法可揭示性网络构成与个体感染HIV风险及与群体中HIV传播的动力学关系。为深入探讨MSM HIV传播风险,为预防干预定位提供信息,该文对性网络与MSMHIV传播关系的研究现况做一简要概述。     

HIV抗体快速检测试剂在北京MSM中应用的真实性评价

目的评价艾滋病病毒（HIV）抗体快速检测试剂,应用于男男性行为人群（MSM）中检测的真实性。方法用两种HIV抗体口腔黏膜渗出液快速检测试剂和指尖血HIV抗体快速检测试剂,对MSM进行快速检测。同时每位调查对象抽取静脉血,用酶联免疫吸附试验（ELISA）检测HIV抗体,阳性者用蛋白免疫印迹法（WB）进行确认检测。以ELISA和WB结果作为金标准,将快速检测结果与之相比较。结果 HIV抗体口腔黏膜渗出液快速检测试剂1的阴性样本检测错误百分比为6.4%（6/94）,阳性样本检测错误百分比为0.1%（1/800）。HIV抗体口腔黏膜渗出液快速检测试剂2的阴性样本检测错误百分比为25.2%（26/103）,阳性样本检测错误百分比为0（0/795）。指尖血检测的阴性样本检测错误百分比为0（0/197）,阳性样本检测错误百分比为0.1%（1/1595）。结论两种口腔黏膜渗出液快速检测试剂都可能导致一部分HIV感染者漏检。在选择口腔黏膜渗出液快速检测试剂时需要进行多方比较和评价,同时加强对开展HIV抗体快速检测的MSM志愿者的培训。对HIV抗体口腔黏膜渗出液快速检测结果的咨询显得尤为重要。     

Accessing HIV testing and treatment among men who have sex with men in China: A qualitative study

Barriers to HIV testing and HIV care and treatment pose significant challenges to HIV prevention among men who have sex with men (MSM) in China. We carried out a qualitative study to identify barriers and facilitators to HIV testing and treatment among Chinese MSM. In 2012, seven focus group (FG) discussions were conducted with 49 MSM participants in Nanjing, China. Purposive sampling was used to recruit a diverse group of MSM participants. Semi-structured interviews were conducted to collect FG data. Major barriers to testing included gay- and HIV-related stigma and discrimination, relationship type and partner characteristics, low perception of risk or threat, HIV is incurable or equals death, concerns of confidentiality, unaware that testing is offered for free, and name-based testing. Key facilitators of testing included engaging in high-risk sex, sense of responsibility for partner, collectivism, testing as a part of standard/routine medical care, MSM-friendly medical personnel, increased acceptance of gay/bisexual men by the general public, legal recognition and protection of homosexuals, and home self-testing. Barriers to treatment included negative coping, nondisclosure to families, misconceptions of domestically produced antiretroviral drugs (ARVs) and the benefits of treatment, and costs associated with long-term treatment. Facilitators of treatment included sense of hopefulness that a cure would be found, the cultural value of longevity, peer social support and professional psychological counseling, affordable and specialized treatment and care, and reduced HIV-related stigma and discrimination. Finally, for both testing and treatment, more educational and promotional activities within MSM communities and among the general public are needed.     

Past year and prior incarceration and HIV transmission risk among HIV-positive men who have sex with men in the US*

Three quarters of new HIV infections in the US are among men who have sex with men (MSM). In other populations, incarceration is a social determinant of elevations in viral load and HIV-related substance use and sex risk behavior. There has been limited research on incarceration and these HIV transmission risk determinants in HIV-positive MSM. We used the Veterans Aging Cohort Study (VACS) 2011-2012 follow-up survey to measure associations between past year and prior (more than one year ago) incarceration and HIV viral load and substance use and sex risk behavior among HIV-positive MSM (N?=?532). Approximately 40% had ever been incarcerated, including 9% in the past year. In analyses adjusting for sociodemographic factors, past year and prior incarceration were strongly associated with detectable viral load (HIV-1 RNA >500 copies/mL) (past year adjusted odds ratio (AOR): 3.50 95% confidence interval (CI): 1.59, 7.71; prior AOR: 2.48 95% CI: 1.44, 4.29) and past 12 month injection drug use (AORs?>?6), multiple sex partnerships (AORs?>?1.8), and condomless sex in the context of substance use (AORs?>?3). Past year incarceration also was strongly associated with alcohol and non-injection drug use (AOR > 2.5). Less than one in five HIV-positive MSM recently released from incarceration took advantage of a jail/prison re-entry health care program available to veterans. We need to reach HIV-positive MSM leaving jails and prisons to improve linkage to care and clinical outcomes and reduce transmission risk upon release.     

Sexual risk taking and the HIV care continuum in an online sample of men who have sex with men

Antiretroviral Therapy (ART) suppresses HIV replication, reducing the risk of transmission. However, many people living with HIV in the US are not virally suppressed even after diagnosis and initiating ART, and may become disengaged from care at each stage of the HIV care continuum (HCC). In the current study we assessed the sexual risk behaviors of MSM by HCC stage. US MSM who completed an online survey (N?=?12,995) in 2015 were categorized into 6 HCC groups. Mean age was 39.2 and a majority identified as White (49.6%). At every stage of the HCC, we found higher proportions of individuals engaged in care compared to CDC estimates. A majority of the sample was HIV-positive and engaged in care, with 67.2% of HIV-positive participants reporting viral suppression with ART. Across HCC groups, participants reported high rates of past 6-month condomless anal sex (CAS) (79.2%–84.8%) and CAS with serodiscordant or unknown status partners (38.0%–84.1%). Notably, MSM with unknown HIV serostatus reported the highest proportion of CAS and serodiscordant CAS. HIV-positive MSM not on ART were more likely to report an STI diagnosis (p?p?p?相似文献   

Feasibility of an internet-based HIV testing service: anonymous urine collection from men who have sex with men

A large proportion of people who are HIV positive do not know their serostatus because facility-based provider-initiated HIV testing and counseling, and voluntary counseling and testing, have not been efficiently implemented in China. Therefore, a new HIV testing strategy must be developed to improve testing services so that more HIV infections can be detected earlier. In this study, we established an anonymous internet-aided urine-based HIV testing service for men who have sex with men (MSM) from 1 April 2016 to 20 January 2017. In total, 3092 urine sample collection packs were distributed by grassroots organizations to MSM; 1977 (69.3%) packs were mailed back to the laboratory; and 1911 (96.7%) eligible samples were tested for HIV antibody. The rate of HIV antibody positivity was 7.1% (135/1901), excluding 10 previously-identified HIV infections. Of those tested, 65.4% (1243/1901) participants obtained their results from our website, 94 (69.6%) of 135 newly-identified urine HIV antibody-positive participants were contacted by CDC staff, and 61.7% (58/94) reported undergoing blood HIV antibody confirmation testing after learning of their urine HIV antibody test results. Of those who were tested for venous HIV antibody, 84.5% (49/58) reported being confirmed HIV antibody positive. Thirty-six of the newly diagnosed participants were successfully referred to a hospital to receive antiretroviral therapy. The rate of confirmed HIV antibody positivity was estimated to be 72.8–89.2 times of that of routine HIV antibody testing. In conclusion, this approach offers an alternative efficient HIV testing strategy to identify HIV positive persons in vulnerable populations.     

北京市男男性行为者HIV感染及影响因素的调查研究

目的 了解北京市男男性行为者(men who have sex with men,MSM)艾滋病病毒(HIV)感染情况及其影响因素.方法 于2006年9月-2007年2月,在北京市招募MSM进行问卷调查,调查内容包括社会人口学和高危行为学特征,采集血样检测HIV抗体.结果 在所调查的541名MSM中,HIV和梅毒感染率分别为4.8%(26/541)和19.8%(107/541).在多因素Logistic回归模型中,梅毒感染(OR=4.23;95%CI 1.88-9.54)、过去男性性伴总人数≥10个(OR=3.80,95%CI 1.49-9.72)与MSM HIV感染的关系有统计学意义.结论 MSM已成为HIV感染的高危人群之一,有必要加强艾滋病/性病防治知识宣传和预防干预,来降低HIV在MSM中的传播.     

HIV risk and prevention among men who have sex with men in rural South Africa

Rural South African men who have sex with men (MSM) are likely to be underserved in terms of access to relevant healthcare and HIV prevention services. While research in urban and peri-urban MSM populations has identified a range of factors affecting HIV risk in South African MSM, very little research is available that examines HIV risk and prevention in rural MSM populations. This exploratory study begins to address this lack by assessing perceptions of HIV risk among MSM in rural Limpopo province. Using thematic analysis of interview and discussion data, two overarching global themes that encapsulated participants’ understandings of HIV risk and the HIV risk environment in their communities were developed. In the first theme, “community experience and the rural social environment”, factors affecting HIV risk within the broad risk environment were discussed. These included perceptions of traditional value systems and communities as homophobic; jealousy and competition between MSM; and the role of social media as a means of meeting other MSM. The second global theme, “HIV/AIDS knowledge, risk and experience”, focused on factors more immediately affecting HIV transmission risk. These included: high levels of knowledge of heterosexual HIV risk, but limited knowledge of MSM-specific risk; inconsistent condom and lubricant use; difficulties in negotiating condom and lubricant use due to uneven power dynamics in relationships; competition for sexual partners; multiple concurrent sexual partnerships; and transactional sex. These exploratory results suggest that rural South African MSM, like their urban and peri-urban counterparts, are at high risk of contracting HIV, and that there is a need for more in-depth research into the interactions between the rural context and the specific HIV risk knowledge and behaviours that affect HIV risk in this population.     

重庆市男男性行为人群近1年HIV检测情况及影响因素

目的了解重庆市男男性行为人群(MSM)近1年艾滋病病毒(HIV)检测情况及其影响因素。方法于2009年9-10月,在重庆市通过同伴推动抽样法(Respondent-driven sampling,RDS)招募510名MSM进行问卷调查及HIV和梅毒血清学检测,用RDSAT和SAS进行统计学分析。结果 57.1%的MSM曾经做过HIV检测,近1年HIV检测率为39.7%,HIV和梅毒感染率分别为14.9%和6.3%。在多因素Logistic回归分析结果中,MSM近1年HIV检测的影响因素为:近6个月与最近1个男性性伴主动肛交时使用安全套(AOR=1.7,95%CI:1.1～2.6)、知道最近1个男性性伴的HIV感染状况(AOR=2.0,95%CI:1.2～3.4)和近12个月接受过免费的性病检查或治疗(AOR=7.2,95%CI:3.9～13.0);年龄(>25岁:AOR=0.5,95%CI:0.3～0.8)和担心检测结果阳性受到歧视(AOR=0.5,95%CI:0.3～0.8)。结论急需开展有针对性的宣传教育和干预工作,来促进MSM定期HIV检测以降低HIV的传播。     

贵州省MSM中HIV原发耐药分析

目的分析贵州省男男性行为人群（MSM）中,未经抗病毒治疗的艾滋病病毒（HIV）感染者耐药突变的情况。方法采集贵州省MSM中未经治疗的HIV感染者血样,进行核酸提取、反转录-聚合酶链反应检测及基因测序分析,所得结果登录美国斯坦福大学HIV耐药数据库进行在线分析,确定耐药突变情况。结果 49例样本中成功获得41例基因序列,3例发生潜在低度耐药,耐药相关突变率为22.4%,其中8例存在蛋白酶抑制剂次要耐药相关突变,3例存在非核苷类反转录酶抑制剂相关突变。结论贵州省MSM中未经治疗的HIV感染者少数存在原发耐药相关基因变异,原发耐药株处于较低流行状态,须加强对该人群的监测。