Risk factors of syphilis co-infection among HIV-infected men who have sex with men in Tel-Aviv,Israel

Syphilis incidence in Israel and other industrialized countries has increased in the past decade, mainly among men who have sex with men (MSM) who were co-infected with HIV. This study aimed to assess the demographic characteristics and behavioral risk factors for syphilis infection among HIV-infected MSM in the Tel-Aviv region, Israel. This cross-sectional study compared HIV-infected MSM who were co-infected with syphilis since 2005 with HIV-infected MSM without syphilis, using an anonymous self-administered questionnaire distributed at the AIDS treatment clinic in central Israel in 2016. This study included 75 HIV-infected MSM who were diagnosed with syphilis after their HIV diagnosis and 99 HIV-infected MSM without syphilis. Variables associated with syphilis infection included inadequate adherence to antiretroviral therapy (ART) (OR?=?1.8 [1.2–2.4]), frequent unprotected receptive anal intercourse (UAI) with casual sex partners (OR?=?2.2 [1.5–8.2]), especially with HIV-infected partner (OR?=?3.2 [1.1–7.9]).

In conclusion, HIV and syphilis co-infection were associated with frequent UAI with casual sex partners, inadequate adherence to ART and limited partner notification. In order to minimize syphilis transmission among HIV-infected MSM, AIDS clinics should encourage HIV-infected MSM to use condoms, ensure that patients perform periodic syphilis serology testing and improve partner notifications.     

HIV,syphilis and heterosexual bridging among Peruvian men who have sex with men

OBJECTIVES: To determine prevalence of and risk factors associated with HIV and syphilis seropositivity and estimate incidence of HIV infection among Peruvian men who have sex with men (MSM) and characterize behaviors of men who report sex with both men and women ('bridgers'). DESIGN: Cross-sectional study of MSM in Lima, Peru. METHODS: Four-hundred and fifty-one MSM (of whom 442 responded to the question regarding sexual orientation) recruited through street outreach. Each was interviewed and underwent serologic testing for syphilis and HIV, including the less sensitive enzyme immunoassay test to estimate HIV incidence. RESULTS: Overall, HIV and syphilis prevalence were 18.5% and 16.0%, respectively, with highest prevalence among cross-dressers (33.3% and 51.1%, respectively). The estimated overall HIV seroincidence was 11.2% per year (95% confidence interval, 4.8-23.6). Overall, 47.1% of men reported ever having sex with a woman: 78.6% of men self-identifying as heterosexuals, 85.1% of bisexuals, 35.5% of homosexuals, and 12.5% of cross-dressers. Of these, 26.5% were 'bridgers', of whom 55% reported two or more female partners during the last year. 'Bridgers' were less likely to have always used condoms during the past year for vaginal sex (17%) than for insertive anal sex with men (25.5%). CONCLUSIONS: Among MSM in Peru, HIV and syphilis prevalence and HIV incidence were high, especially among cross-dressers. The high prevalence of bisexuality and low rates of consistent condom use, especially with female sexual partners indicates potential HIV transmission into the heterosexual population.     

Clinical manifestations of primary syphilis in homosexual men

At the beginning of a new millennium, syphilis incidence has been increasing worldwide, occurring primarily among men who have sex with men (MSM). The clinical features of primary syphilis among MSM is described, a case-note review of the primary syphilis (PS) patients who attended the Institute of Skin and Venereal Diseases. The diagnosis was assessed based upon the clinical features and positive syphilis serology tests. Among 25 patients with early syphilis referred during 2010, PS was diagnosed in a total of 13 cases. In all patients, unprotected oral sex was the only possible route of transmission, and two out of 13 patients had HIV co-infection. Overall, 77% of men presented with atypical penile manifestation. The VDRL test was positive with low titers. The numerous atypical clinical presentations of PS emphasize the importance of continuing education of non-experienced physicians, especially in countries with lower reported incidence of syphilis.     

204例MSM人群HIV／梅毒感染状况及行为学特征分析

目的了解天津市部分男男同性性行为人群（MSM）艾滋病相关危险行为,以及艾滋病病毒（HIV）、梅毒（SP）感染状况,为预防性病、艾滋病传播提供依据。方法采用横断面调查,对进入酒吧的男同性恋者进行问卷调查,同时抽取血样进行梅毒和HIV的实验室检测。结果调查的204人中,HIV感染率为5．9％,梅毒感染率为18．7％。艾滋病知识知晓率为81．4％,近6个月每次性行为均使用安全套的比例为47．9％,HIv感染者安全套使用率低,仅为11．1％,71．4％的HIV感染者最近6个月存在多性伴现象。结论天津市MSM人群危险性行为普遍存在,安全套使用率低,HIV、梅毒感染率较高,应加强对该人群艾滋病性病相关的宣传教育及干预工作,控制HIv的传播。     

深圳市罗湖区MSM的HIV感染情况及相关危险因素

目的了解深圳市罗湖区男男性行为人群（MSM）艾滋病病毒（HIV）感染情况及相关危险因素。方法采用以时间场所抽样调查方法,在最佳时段,在MSM活动场所招募MSM进行问卷调查,并采集血样检测HIV、梅毒和丙型肝炎病毒（HCV）抗体。HIV感染的相关危险因素采用Logistic回归模型进行分析。结果 2008年4月至2009年11月共招募MSM 870名,HIV检测阳性率为4.5%（39例）,梅毒阳性率为11.7%（102例）,HCV阳性率为0.9%（8例）。74.5%的MSM向男性提供过商业性性服务。多因素Logistic回归分析显示,招募场所为家庭会所或桑拿、性取向为同性恋以及梅毒阳性,分别是MSM感染HIV的危险因素。结论罗湖区从事商业性性服务的MSM比例较高,桑拿及家庭会所感染率较高,应考虑在现有干预方案基础上增加针对性的有效干预措施。     

长沙市男男性行为者HIV和梅毒感染现状及影响因素分析

目的 了解长沙地区男男性行为者(MSM)艾滋病病毒(HIV)和梅毒感染状况及其影响因素.方法 2018年10月至2019年6月期间,委托非政府组织(NGOs)应用滚雪球的方法招募MSM,开展问卷调查和HIV及梅毒检测.采用多因素Logistic回归模型分析HIV和梅毒感染的影响因素.结果 共招募1 220名MSM,其中...     

Sexually transmitted diseases in men who have sex with men: An epidemiologic review

The introduction of highly active antiretroviral therapy (HAART) has led to dramatic reductions in morbidity and mortality due to HIV infection. However, the resulting optimism and improved health status produced by HAART appears to have contributed to unanticipated consequences in men who have sex with men (MSM): loss of fear of acquiring and transmitting HIV, an increase in high-risk sex, decreased use of condoms, and a resurgence of gonorrhea and syphilis. Other factors, such as lack of knowledge of sexually transmitted diseases (STDs), use of the Internet as a venue to find sex partners, the increasing use of Viagra (Pfizer, New York, NY) as a recreational drug, and the apparent expanding role of oral sex in STD transmission are fueling these trends. Since ulcerative and inflammatory STDs facilitate HIV transmission, a new wave of HIV infection in MSM may be on the horizon. The rising STD rates and relapses in high-risk sexual behaviors in MSM, both HIV-infected and -uninfected MSM, have profound implications for public health and the clinical management of these patients. Clinicians should be aware of this turn of events, and implement new screening and counseling guidelines that have been issued in response to these alarming reports.     

深圳市MSM异性性行为及其对HIV/梅毒感染的影响

目的了解深圳市男男性行为人群（MSM）的异性性行为特征,分析其对该人群艾滋病病毒（HIV）/梅毒感染的影响。方法在知情同意原则下,收集2009-2012年深圳市MSM的社会人口学、高危行为等信息,并采集血液进行HIV/梅毒检测。结果共3445名MSM接受自愿咨询检测,969人（28.13%）最近半年内发生过异性性行为,其中28.07%的人（272/969）女性性伴数≥2个,32.71%的人（317/969）与女性性伴性交时每次使用安全套。梅毒感染率为17.54%（170/969）,HIV感染率为7.53%（73/969）,HIV合并梅毒感染率为4.13%（40/969）。与近半年无异性性行为的MSM相比,发生异性性行为的MSM半年内肛交性伴数和口交性伴数较少,肛交时每次使用安全套的比例较高,梅毒感染率相对较低。结论相当比例的MSM最近半年内有异性性行为,应有针对性地采取干预措施,阻断HIV经异性性传播。     

青岛地区MSM中HIV/梅毒及尖锐湿疣的感染情况

目的了解青岛地区男男性行为人群（MSM）艾滋病病毒（HIV）/梅毒及尖锐湿疣的感染情况。方法利用中盖项目支持平台,对前来接受干预检测的MSM进行相关查体及实验室检查。结果 687名MSM共检出尖锐湿疣41例,检出率为5.97%;梅毒89例,检出率为12.95%;HIV 8例,检出率1.16%。8例HIV阳性患者中,3例合并CA,4例合并梅毒;2例CA患者同时伴有HIV、梅毒阳性;89例梅毒阳性患者中,19例合并CA。结论 MSM中HIV、梅毒及尖锐湿疣感染情况严重,提示临床医生在对MSM的梅毒、尖锐湿疣患者诊治的同时,应注重HIV的检测。     

沈阳市男男性行为人群HIV感染率及其影响因素分析

目的了解沈阳市男男性行为人群（MSM）艾滋病病毒（HIV）感染率及其影响因素,进一步做好MSM的艾滋病防治工作。方法采用同伴推动法（RDS）招募900名MSM,由经过专业培训的调查员进行面对面的问卷调查,主要内容包括社会人口学特征、艾滋病知识知晓水平、性行为状况、接受干预服务情况和HIV/梅毒感染状况,并抽取静脉血检测HIV及梅毒,对影响HIV感染的相关因素进行χ2检验。结果调查了900名MSM,艾滋病知识知晓率达到91.3%。86.9%的调查对象最近6个月有同性肛交性行为,最近6个月与男性发生肛交性行为时每次都使用安全套的比例为57.5%。HIV感染率为9.3%,梅毒感染率为11.0%。分析显示,年龄较大、文化程度在初中及以下、最近6个月与男性发生肛交性行为时未坚持使用安全套、梅毒感染是感染HIV的危险因素。结论 MSM人群高危性行为发生率、HIV和梅毒感染率均高,可能成为当前HIV流行的重要人群和重要因素,应采取积极有效的宣传教育和行为干预活动。     

Bisexual behavior and infection with HIV and syphilis among men who have sex with men along the east coast of China

This study examined the correlates of bisexual behavior and infection with HIV/syphilis among men who have sex with men only (MSM-only) and those who have sex with both men and women (MSMW) in Shandong, China. Cross-sectional surveys probed sociodemographic information, sexual and drug use behaviors, knowledge, and use of prevention services; blood samples were tested for HIV/syphilis status. Of 2996 participants, 39.5% acknowledged being MSMW; 60.5% being MSM-only; 2.5% were HIV-infected with similar rates for MSMW (2.5%) and MSM-only (2.6%); 5.5% syphilis-infected with comparable rates for MSMW (5.6%) and MSM-only (5.5%). In multivariable models, MSMW were more likely than MSM-only to be older, local residents, recruited from outdoor cruising area, drug users, and less likely to have used a condom during last anal sex with a male partner. HIV-infected MSMW were more likely to have syphilis and other sexually transmitted diseases (STDs) and less likely to have received peer education. HIV-infected MSM-only were more likely to be older, nonlocal residents, and have syphilis and other STDs. MSMW with syphilis were more likely to be recruited from Jinan, Qingdao, and Zibo (versus Yantai), infected with HIV, and less likely to have received lubricant promotion. MSM-only with syphilis were more likely to be recruited from Jinan and Qingdao (versus Yantai), drug users, infected with HIV, and have had sex with male partners in the past 6 months. High prevalence of bisexual behavior and HIV/other STDs with common unprotected sex and multiple sexual partners among Shandong's gay community revealed in this study highlighted the importance of bisexuals as a potential epidemiologic bridge. Further research is needed to investigate the impact of bisexual behaviors on population transmission.     

Testing rates for sexually transmitted infections among HIV-infected men who have sex with men attending two different HIV services

This study compares the testing rates of bacterial sexually transmitted infections (STIs) among HIV-positive men who have sex with men (MSM) attending two HIV clinics in Melbourne. Data on STI testing over a 12-month period were obtained for all HIV-positive MSM who attended the clinics between January and March 2006. Screening rates for bacterial STIs were significantly higher at a sexual health clinic (n = 254) compared with an infectious diseases clinic (n = 351), whether this was measured according to: at least one STI test being performed for chlamydia, gonorrhoea or syphilis (69% vs. 38%, P < 0.01); serological testing for syphilis alone (67% vs. 34%, P < 0.01); or 'complete' STI screening for pharyngeal gonorrhoea, urethral chlamydia, anal gonorrhoea, anal chlamydia and syphilis (41% vs. 6%, P < 0.01). Substantial differences in STI testing rates among HIV-positive MSM may exist between HIV clinical services depending on the measures in place that promote STI screening.     

HIV, syphilis infection, and risky sexual behaviors among male university students who have sex with men in Beijing, China: a cross-sectional study

Young male university students who have sex with men are at high risk of HIV and sexually transmitted infections (STIs). We conducted a cross-sectional survey to assess the prevalence of risky sexual behaviors, HIV, and syphilis among male university students who have sex with men in Beijing, China; and to identify risk factors for unprotected anal intercourse (UAI). Among 157 study participants, HIV and syphilis prevalence were 2.5% and 7.0%, respectively. We found a high prevalence of UAI in our study population. Multiple logistic regression analysis revealed two significant predictors of UAI: believing it is not necessary to use a condom with a regular sex partner and not feeling anxious about being gay. Not using a condom during first sexual experience with a man was a marginally significant predictor of UAI. Male university students who have sex with men are especially vulnerable to HIV and STIs. Intensified education and HIV testing programs are needed to reduce risk in this population.     

HIV/STI co-infections, syphilis incidence, and hepatitis B vaccination: the Buenos Aires cohort of men who have sex with men

In a previous cohort study among 327 men who have sex with men (MSM) in Buenos Aires, an HIV incidence rate of 3.9 per 100 persons-year was reported. Using data from this study, we determined: (a) HIV/STI co-infections; (b) clinical manifestations of incident HIV infections; (c) syphilis incidence and its associated risk factors; and (d) adherence and immune response to hepatitis B virus (HBV) vaccine. During the cohort study, 12 incident HIV infections were found. Within this group, HIV infection alone was most frequent (42%), followed by co-infection of HIV/HBV (33%), and triple co-infection of HIV/HBV/syphilis (25%). The most frequent clinical manifestations among incident HIV cases were: pharyngitis, fever, lymphadenopathy, asthenia, and myalgia. Seven new syphilis infections were detected yielding an incidence rate of 2.4 (95% CI=1.07 - 4.73) per 100 persons-year. Sex work was the only significant risk factor associated with syphilis seroconversion (hazard rate=10.93, p-value=0.033). Only 7% of cohort participants reported having received HBV vaccine. Ninety-percent of the 204 cohort members who agreed to be vaccinated completed the HBV vaccination schedule with an immune response rate of 85%. Our findings suggest the need to increase the access to serologic testing for STI and HBV immunization, as well as the developing of effective HIV/STI behavioral and educational prevention programs among MSM in Buenos Aires.     

深圳市2943例MSM梅毒感染影响因素分析

目的了解深圳市男男性行为人群（MSM）的梅毒感染状况及影响因素。方法整理深圳市MSM的梅毒监测资料,并进行单因素和多因素Logistic回归分析。结果共2943名MSM接受自愿咨询检测,梅毒感染率为20．76％,梅毒合并HIV感染率为4．3;％。多因素Logistic回归分析结果显示,MSM感染梅毒与职业、性角色、半年内女性性伴数、半年内肛交性伴数、合并感染HIV有关。职业为无业／待业与工人者,感染梅毒的风险分别是职员的1．675倍和1．766倍。性角色以主动被动两者兼有者,感染梅毒的风险是主动者的1．450倍。半年内女性性伴数为1个和≥2个者,感染梅毒的风险分别是无女性性伴者的0．873倍和0．589倍;半年内肛交性伴数为2～4个和≥5个者,感染梅毒的风险分别是≤1个者的1．353倍和1．839倍;HIV感染者合并梅毒感染的风险是HIV阴性者的4．991倍。结论深圳市MSM梅毒影响因素复杂,应有针对性地开展预防控制工作。     

Associations of current marital status and living arrangements with HIV and syphilis risk: findings from a community-based sample of men who have sex with men in China

Chinese men who have sex with men (MSM) are disproportionally affected by HIV and sexually transmitted infections (STIs), but little is known about the role of current marital status and living arrangements in shaping their HIV/syphilis risk. A cross-sectional study was conducted among MSM in Beijing, China to assess their sociodemographic/behavioral characteristics between married and single MSM, and test the hypothesis that currently married MSM have a lower odds of being HIV- and/or syphilis-infected. Participants were recruited via short message services, peer referral, internet, and community outreach. Data collection was based on a questionnaire survey and self-report. Infection status was lab-confirmed. Multivariable logistic regression modeling was used to assess the association of marital status and living arrangement with HIV/syphilis risk. Of the 3588 MSM, infection prevalence was high (HIV?=?12.7%; syphilis?=?7.5%). Compared to single MSM living with their boyfriends or male sex partners, single/alone MSM and married MSM living with wives were less likely to practice condomless insertive (CIAI) or receptive (CRAI) anal intercourse with men; while married MSM living with boyfriends or male sex partner were more likely to practice CIAI and CRAI, and married MSM were more likely to practice condomless vaginal sex. Compared to men living with boyfriends/sexual partners, significantly reduced odds of being HIV-positive were seen among married MSM who were living alone (aOR: 0.52; 95%CI: 0.28, 0.94) or living with their wives (aOR: 0.53; 95%CI: 0.31, 0.89). Similarly, single MSM living alone (aOR: 0.67; 95%CI: 0.48, 0.95) and married MSM living with their wives were comparatively less likely to be syphilis-infected (aOR: 0.43; 95%CI: 0.23, 0.79). Future efforts should consider characteristics of marital status and living arrangements for designing subgroup-specific risk reduction strategies among Chinese MSM.     

廊坊市部分MSM人群HIV检测咨询前后高危行为变化的分析

目的评价艾滋病病毒（HIV）检测咨询,对男男性行为人群（Men who have sex with men,MSM）艾滋病相关危险行为变化的影响。方法通过问卷调查,收集廊坊市200名MSM参加HIV检测咨询前后高危行为的变化,并进行艾滋病和主要性病的检查,比较艾滋病相关危险行为的变化。结果 200名MSM基线调查HIV抗体阳性率为7.3%,梅毒感染率为19.8%,淋球菌检出率为15.8%;三个月后的随访调查中,梅毒感染率为24.7%,淋球菌感染率为12.2%。随访调查中MSM中多性伴的比例、发生一夜情的比例、肛交以及性交中自己出血的比例,均有所下降（P〈0.05）。按照性病感染状态分层后发现,感染了性病的MSM,被告知检测结果后,发生肛交的比例由73%下降到38%（P〈0.01）,群交和性交过程中的出血情况分别由19.2%和23.1%下降到5.8%和5.8%（P〈0.05）。未感染性病的MSM,一夜情的比例从32.5%下降到17.2%（P=0.008）,口交比例由57.0%上升到78.5%（P=0.001）。感染了性病的MSM发生肛交的比例要低于健康MSM（χ2=5.189,P=0.023）。结论 HIV检测咨询对MSM艾滋病相关危险行为的改变有积极意义,建议在该人群中推广HIV检测咨询服务,促进高危行为的改变。     

深圳市男男性行为人群HIV梅毒及HCV新发感染的队列研究

目的了解深圳市男男性行为人群(MSM)艾滋病病毒(HIV)、梅毒及丙型肝炎病毒(HCV)抗体阳转情况。方法依托深圳市每年开展的时间场所抽样结合同伴推动抽样方法,于2009年5月招募325名MSM为前瞻性研究队列,在基线和一年随访时调查其高危行为情况,并采集血样检测HIV、梅毒和HCV抗体。结果队列随访一年,MSM队列保持率仅为56.2%,HIV血清抗体阳转率为4.44/100人年,梅毒阳转率为7.00/100人年,HCV血清抗体阳转率为1.61/100人年。结论深圳市MSM人群HIV、梅毒以及HCV的新发感染率均比较高,应考虑在现有干预方案基础上增加针对性的有效干预措施。     

Association of herpes simplex virus type 2 infection and syphilis with human immunodeficiency virus infection among men who have sex with men in Peru

BACKGROUND: We evaluated associations between human immunodeficiency virus (HIV) infection, herpes simplex virus type 2 (HSV-2) infection, and syphilis among men who have sex with men (MSM) in Peru. METHODS: A surveillance survey of 3280 MSM was conducted; sexual behavior was assessed with a structured computer-assisted self-interview, and serum antibody testing was performed for HIV, HSV-2, and Treponema pallidum. RESULTS: HIV, HSV-2, and syphilis seroprevalences of 13.9%, 46.3%, and 13.4% were detected, respectively. HSV-2 seroprevalence was twice as high in HIV-infected subjects (80.5%) than it was in HIV-uninfected subjects (40.8%) (P < .01), and HSV-2 seropositivity (adjusted odds ratio [AOR], 5.66) was found to be strongly associated with HIV infection. In addition, homosexual self-definition (AOR, 3.12), exchange of sex for money (AOR, 1.61), unprotected sex (no condom) (AOR, 2.81), history of sex work (AOR, 1.89), oral receptive sex (AOR, 1.43), and cocaine use before/during sex (AOR, 2.53) within the preceding 6 months, as well as such sexually transmitted infections (STIs) and STI syndromes as proctitis (AOR, 2.80), genital ulcer disease (GUD) (AOR, 2.06), prior syphilis (AOR, 2.64), genital warts (AOR, 1.70), and self-reported STIs within the preceding 6 months (AOR, 1.61), were also found to be significant predictors of HIV infection. CONCLUSIONS: We found a strong association between HSV-2 seropositivity and HIV infection. Intervention measures against GUD due to HSV-2 infection and syphilis, such as routine testing, early detection, HSV-2 suppressive treatment, and condom distribution, need to be enhanced as part of STI prevention strategies at a national level to effectively reduce HIV infection among MSM in Peru.     

秦皇岛市MSM的HIV、TP、HCV感染状况及影响因素

目的了解秦皇岛市男男性行为人群（MSM）的艾滋病病毒（HIV）、梅毒螺旋体（TP）、丙型肝炎病毒（HCV）感染状况和相关影响因素,提出有针对性的防控性病艾滋病的干预建议。方法 2009-2012年连续4年采用自愿招募和滚雪球的方法,通过自愿咨询检测（VCT）门诊和开展外展干预活动,对第一次接受艾滋病咨询检测的MSM进行问卷调查和血清学检测。结果 4年共招募MSM 1043人。70.76%（738/1043）的人通过网络寻找性伴,4年间,艾滋病知识知晓率、接受艾滋病干预服务和接受HIV检测人数均逐年上升（P〈0.01）。近6个月,898人（86.10%）有过同性肛交行为,其中坚持使用安全套率为42.76%;34.63%（311/898）有过异性性行为,安全套坚持使用率为36.98%;9.02%（81/898）有过商业性性行为,安全套坚持使用率为53.09%。HIV、TP、HCV平均感染率分别为5.75%（60/1043）、7.19%（75/1043）、0.19%（2/1043）,HIV、TP感染率呈逐年上升趋势（P〈0.05）。多因素分析结果显示：文化程度相对低、在当地居住时间短、曾感染过性病是HIV、TP感染率的危险因素;年龄较大的MSM,TP感染的风险更大。结论秦皇岛市MSM HIV、TP感染率较高,应重点加强对年轻MSM的宣传干预力度,切实提高安全意识和安全行为,同时推广网络宣传干预;而在年龄大、已婚的MSM,则应加强TP筛查并提供方便、可及的诊疗服务。在开展性病艾滋病防治宣传的同时不应忽视丙型肝炎防治知识的宣传。