Transactional Sex and the HIV Epidemic Among Men Who have Sex with Men (MSM): Results From a Systematic Review and Meta-analysis

Transactional Sex, HIV, and Bacterial STIs Among U.S. Men Who have Sex with Men

INTRODUCTION

Men who have sex with men (MSM) and are engaged in transactional sex (MSM-TS) experience complex social and structural vulnerabilities that increase their HIV risk. This study aimed to estimate the prevalence of TS and associations between TS and sexually transmitted infection (STI) outcomes among cisgender MSM in the U.S.

METHODS

Using 2017-2021 data from an online survey of U.S. MSM, characteristics of MSM-TS were summarized, and adjusted prevalence ratios (aPRs) calculated for the associations between past-year TS and bacterial STI diagnosis, HIV status, and either antiretroviral or pre-exposure prophylaxis use. Analyses were conducted in 2023.

RESULTS

TS prevalence was 3.7% (n=1,848/49,539). Compared to other MSM, MSM-TS more commonly reported homelessness, being uninsured, condomless anal sex with partners of any HIV status and condomless anal sex with serodifferent partners, and illicit drug use. TS was associated with increased HIV (aPR 1.44, 95% CI 1.25-1.66) and bacterial STI prevalence (aPR 2.40, 95% CI=2.09-2.52) and lower antiretroviral therapy use (among MSM living with HIV; PR 0.92, 95% CI=0.87-0.97).

CONCLUSIONS

Structural and behavioral risks converged among U.S. MSM engaging in TS leading to greater HIV and bacterial STI prevalence in this group. HIV interventions for U.S. MSM-TS should address individual as well as structural risks, including poverty and housing instability.

Transactional sex and its associated factors among gay, bisexual and other men who have sex with men in Nepal

Background Transactional sex, which involves the exchange of sex for money, goods or other items of value, has been associated with adverse health outcomes, such as HIV and other sexually transmitted infections, mental health challenges, and substance use. Although transactional sex has been extensively studied globally among cisgender and transgender women, there is a lack of comprehensive understanding regarding its prevalence and correlates among gay, bisexual and other men who have sex with men (GBMSM), particularly in Nepal. Thus, this study aimed to examine the prevalence of transactional sex and its associated factors among GBMSM in Nepal. Methods A cross-sectional survey was conducted among GBMSM in Kathmandu Valley, Nepal, between October and December 2022 (N =250). We collected information on participants' sociodemographic characteristics, sexual and other behavioural characteristics, and their engagement in transactional sex. Bivariate and multivariate logistic regression analyses were performed to determine the factors associated with transactional sex. Results The average age of participants was 27.5years (s.d. 8.9). Overall, 16.4% reported engaging in transactional sex within the past 6months. Participants with more financial dependants (aOR: 1.2, 95% CI: 1.0-1.5) and those who had experienced police detention (aOR: 4.8, 95% CI: 1.1-19.6) were more likely to engage in transactional sex. In contrast, GBMSM who reported engaging in condomless sex were less likely to engage in transactional sex (aOR: 0.02, 95% CI: 0.06-0.1). Conclusions The study findings underscore a noteworthy prevalence of transactional sex and associated socioeconomic and behavioural factors among GBMSM in Nepal. These results underscore the need for targeted interventions addressing both economic vulnerabilities and legal interactions to reduce transactional sex and its associated risks in this high-risk group.

HIV Incidence and Transactional Sex Among Men Who Have Sex With Men in Ningbo, China: Prospective Cohort Study Using a WeChat-Based Platform

Background

Sexual transmission among men who have sex with men (MSM) has become the major HIV transmission route. However, limited research has been conducted to investigate the association between transactional sex (TS) and HIV incidence in China.

Objective

This study aims to investigate HIV incidence and distinguish sociodemographic and sexual behavioral risk factors associated with HIV incidence among MSM who engage in TS (MSM-TS) in China.

Methods

We conducted a prospective cohort study using a WeChat-based platform to evaluate HIV incidence among Chinese MSM, including MSM-TS in Ningbo, recruited from July 2019 until June 2022. At each visit, participants completed a questionnaire and scheduled an appointment for HIV counseling and testing on the WeChat-based platform before undergoing offline HIV tests. HIV incidence density was calculated as the number of HIV seroconversions divided by person-years (PYs) of follow-up, and univariate and multivariate Cox proportional hazards regression was conducted to identify factors associated with HIV incidence.

Results

A total of 932 participants contributed 630.9 PYs of follow-up, and 25 HIV seroconversions were observed during the study period, resulting in an estimated HIV incidence of 4.0 (95% CI 2.7-5.8) per 100 PYs. The HIV incidence among MSM-TS was 18.4 (95% CI 8.7-34.7) per 100 PYs, which was significantly higher than the incidence of 3.2 (95% CI 2.1-5.0) per 100 PYs among MSM who do not engage in TS. After adjusting for sociodemographic characteristics, factors associated with HIV acquisition were MSM-TS (adjusted hazard ratio [aHR] 3.93, 95% CI 1.29-11.93), having unprotected sex with men (aHR 10.35, 95% CI 2.25-47.69), and having multiple male sex partners (aHR 3.43, 95% CI 1.22-9.64) in the past 6 months.

Conclusions

This study found a high incidence of HIV among MSM-TS in Ningbo, China. The risk factors associated with HIV incidence include TS, having unprotected sex with men, and having multiple male sex partners. These findings emphasize the need for developing targeted interventions and providing comprehensive medical care, HIV testing, and preexposure prophylaxis for MSM, particularly those who engage in TS.

Trends in Sexual Health of Gay, Bisexual, and Other Men Who Have Sex with Men, and Transgender Individuals: Apps Driven Testing Program for HIV and Other STIs in Barcelona, Spain (2016-2023)

Gay, bisexual and other men who have sex with men (GBMSM) and transgender individuals face heightened risks of HIV and other sexually transmitted infections (STIs). Surveillance within these populations is critical, and community testing services play a pivotal role in preventing and controlling HIV and STIs. This study investigates the trends in HIV, syphilis and hepatitis C (HCV) infections among participants in an apps-driven rapid test program from 2016 to 2023 in Barcelona, Spain, examining associated factors. Trend analysis utilized Wilcoxon-type test and associated factors were determined through multivariate logistic analysis. The prevalence of new HIV diagnosis was 1.81% (CI 1.18-2.64), active syphilis was 3.37% (CI 2.46-4.50) and acute HCV was 0.40% (CI 0.11-1.02). While infection rates showed no significant changes, there was significant increasing in sex work and chemsex and decreasing in condom use. Additionally, a peak in dating apps use for sex and a specific reduction in number of sexual partners were observed in 2020. Factors associated with HIV diagnoses included migrant status (aOR = 11.19; CI 2.58-48.53) and inconsistent condom use during the previous 12 months (aOR = 3.12; CI 1.02-9.51). For syphilis, associated factors were migrant status (aOR = 2.46; CI 1.14-5.29), inconsistent condom use (aOR = 3.38; CI 1.37-8.36), and chemsex practice during the previous 12 months (aOR = 2.80; CI 1.24-6.30). Our findings emphasize the need for tailored interventions, including culturally sensitive outreach for migrants and comprehensive strategies addressing substance use in sexual contexts. Technological innovations and targeted educational initiatives could reduce the burden of HIV and STIs within the GBMSM and transgender communities, providing valuable insights for public health strategies.

Social norms that sustain transactional sex and associations with sexual health outcomes: A mixed-methods study in the Comarca Ngäbe-Buglé, a rural-Indigenous region of Panama

The Comarca Ngäbe-Buglé (CNB), home to >200,000 Indigenous people, is one of the poorest regions in Panama. We describe transactional sex (TS) behaviours, normative beliefs and factors associated with TS among Indigenous adolescents(14-19years) in the CNB. We conducted a mixed-methods study in the CNB between January and November 2018, which included a qualitative study with participant observation and semi-structured interviews that focused on descriptive norms related to TS; and a cross-sectional study among public-school-going adolescents using self-administered questionnaire to report sexual behaviour and injunctive norms related to TS. Participants in the epidemiological study were also asked to submit samples for HIV, syphilis, chlamydia, and gonorrhoea testing. Qualitative thematic analysis was used to organise and analyse field notes and semi-structured interviews. Quantitative analysis included four models: TS experience and acceptance of a TS offer and the associations of these outcome variables with demographic and behavioural variables and HIV/STI infections. In the qualitative study among 20 adolescents, we found that people offering TS were reported to be from within and outside of the community, and included older men and women, and disturbingly, teachers. Participants reported feeling individual and collective agency in the decision to engage in TS and described little social sanctions for participation. In the quantitative study among 700 adolescents(309 girls[45.1%],379 boys[54.9%]), we found that girls(18.8%;58/309) and boys(15.5%;58/379) reported similar levels of having been offered TS, and of acceptance among those offered(girls 81.4% [35/43]; boys 77.8% [35/45]). TS was found to be associated with the reported forced sex and HIV/syphilis seropositivity. Due to widespread acceptance and feelings of agency, interventions would not be effective if they focused on eliminating the transactional component of sexual encounters. Instead, interventions should focus on individual and household economic stability, increasing violence reporting, bringing perpetrators to justice, and adopting condom use during all sexual encounters.

Examination of multidimensional geographic mobility and sexual behaviour among Black cisgender sexually minoritized men in Chicago

Black sexually minoritized men (BSMM) are the most likely to acquire HIV in Chicago- a racially segregated city where their daily travel may confer different HIV-related risks. From survey and GPS data among participants of the Neighbourhoods and Networks Cohort Study, we examined spatial (proportion of total activity space away from home), temporal (proportion of total GPS points away from home), and motivation-specific (discordance between residential and frequented sex or socializing neighbourhoods) dimensions of mobility. To identify potential drivers of BSMM's risk, we then examined associations between mobility and sexual behaviours known to cause HIV transmission: condomless anal sex, condomless anal sex with a casual partner, transactional sex, group sex, and sex-drug use. Multivariable logistic regression models assessed associations. Of 269 cisgender BSMM, most were 20-29 years old, identified as gay, and lowincome. On average, 96.9% (Standard Deviation: 3.7%) of participants' activity space and 53.9% (Standard Deviation: 38.1%) of participants' GPS points occurred outside their 800m home network buffer. After covariate adjustment, those who reported sex away from home were twice as likely to report condomless sex (Odds Ratio: 2.02, [95% Confidence Interval (CI): 1.08, 3.78]). Those who reported socializing away from home were four times more likely to have condomless sex with a casual partner (Odds Ratio: 4.16 [CI: 0.99, 29.0]). BSMM are on the move in Chicago, but only motivation-specific mobility may increase HIV transmission risk. Multidimensional investigations of mobility can inform place-based strategies for HIV service delivery.

Examining HIV Knowledge and Sexually Risky Behaviors among Female Sex Workers in Kampala, Uganda

HIV incidence remains alarmingly high among female sex workers (FSWs) in Uganda, necessitating targeted interventions. This study aimed to identify individual and provider-level barriers and facilitators to primary HIV prevention among FSWs in an urban setting. Focus groups involving FSWs and healthcare providers (HCPs) were conducted to inform the development of tailored prevention interventions. Results revealed that all participants had mobile phones, recent sexual activity, and a history of HIV testing, with high rates of sexually transmitted infections and varying HIV test results. FSWs displayed a well-informed awareness of HIV transmission risks, emphasizing the threat for those not testing positive. They unanimously recognized the crucial role of HIV testing in informing, mitigating risks, promoting ART use, and endorsing consistent condom usage. Despite heightened awareness, HCPs noted potential underestimation of vulnerability. Various challenges, including inadequate condom usage, substance abuse, and client dynamics, underscored the complexity of safeguarding against HIV transmission among FSWs. Widespread alcohol and drug use, including marijuana, kuber, and khat, served as coping mechanisms and social facilitators. Some FSWs successfully reduced alcohol intake, highlighting challenges in addressing substance use. FSWs preferred group discussions in health education programs, emphasizing peer interactions and the effectiveness of visual aids in HIV prevention education. This study provides comprehensive insights to guide the development of targeted interventions addressing the multi-faceted challenges FSWs face in HIV prevention.

When Ethics and the Law Collide: A Multicenter Demonstration Cohort Study of Pre-Exposure Prophylaxis Provision to Adolescent Men Who Have Sex With Men and Transgender Women in Brazil

PURPOSE

To explore legal and ethical challenges related to adolescents' participation in human immunodeficiency virus (HIV) research that may affect their best interests.

METHODS

We analyzed the ethical principles and legal aspects of the participation of 15-17-year-old men who have sex with men and transgender women in the pre-exposure prophylaxis (PrEP) 1519 study, a PrEP demonstration cohort study in three Brazilian cities. The analyses of ethics review committees' (ERCs) evaluations and court decisions followed ethical and human rights principles. An HIV vulnerability score was created, and descriptive statistics and multivariate logistic regression were performed using data from 347 participants.

RESULTS

The ERCs evaluated the benefits and risks of research participation, all finding that the benefits outweighed the risks. ERCs deferred responsibility for decisions about waiving parental consent to the judiciary. State courts reached different decisions about waiving parental consent, reflecting variation in recognition of adolescents' evolving capacities and the adolescent as a subject of sexual rights and the primary agent capable of deciding on their health and best interests. The most vulnerable adolescent participants were found in sites where the blanket waiver was in place.

DISCUSSION

Judicializing the ethical review process is detrimental to fulfilling the ethical principle of justice and vulnerable adolescents' access to health research. ERCs must be sufficiently independent and autonomous and have the capacity to respect, protect, and help fulfill the rights of participants while ensuring the generation of adequate evidence to inform public health practice.

Sexual (Risk) Behavior and Risk-Reduction Strategies of Home-Based Male Sex Workers Who Have Sex with Men (MSW-MSM) in The Netherlands: A Qualitative Study

An understanding of sexual (risk) behavior is necessary to successfully develop prevention and care strategies for the sexually transmitted infections (STI) high-risk group of male sex workers who have sex with men (MSW-MSM). However, limited scientific knowledge is available on sexual (risk) behavior of (home-based) MSW-MSM. This study aimed to gain an understanding of sexual (risk) behavior, factors influencing sexual (risk) behavior, and applied risk-reduction strategies of home-based MSW-MSM. For this qualitative study, semi-structured individual interviews were conducted with 20 home-based MSW-MSM in the Netherlands. The interviews' recordings were transcribed verbatim and thematically analyzed with Atlas.ti 8. Condom use was reported to be high during anal sex, but low during oral sex and mostly determined by STI risk perception, trust in clients, and sexual pleasure. Many experienced condom failure, while few knew what to do after condom failure and were aware of post-exposure prophylaxis (PEP). Many MSW-MSM had chemsex in the past 6 months in order to loosen up and enhance sexual pleasure. Some were not vaccinated against hepatitis B virus (HBV), mainly due to the lack of information and awareness of HBV vaccination and low risk perception of HBV. The results of this study can be used to tailor future STI/HIV risk-reduction strategies for home-based MSW-MSM and to increase awareness and uptake of available STI/HIV prevention strategies such as P(r)EP and HBV vaccination.

Association Between Age of Anal Sex Debut and Adult Health Behaviors Among Sexual Minoritized Men Living with HIV

Earlier age of anal sex debut (ASD) has been linked with contemporary and long-term health outcomes, including vulnerability to HIV acquisition. The goal of this study was to utilize a life course approach to examine associations between earlier ASD and recent health behaviors among sexual minoritized men (SMM) living with HIV. A total of 1156 U.S. SMM living with HIV recruited from social and sexual networking apps and websites completed online surveys as part of a longitudinal eHealth intervention. Data from baseline surveys were analyzed to determine associations between age of ASD and adult health outcomes, including mental health, HIV viral load, and substance use. The median age of ASD among these participants was 17 years old, consistent with other work. Earlier ASD was significantly associated with a greater likelihood of past 2-week anxiety (AOR = 1.45, 95% CI 1.07-1.97) and past 3-month opioid use (AOR = 1.60, 95% CI 1.13-2.26); no significant associations were found for recent depression, HIV viral load, or stimulant use. Earlier ASD may function as an important proxy measure for deleterious health outcomes in adulthood, particularly recent anxiety and opioid use. Expansion of comprehensive and affirming sexual health education is critical to early engagement of individuals with a higher risk of HIV acquisition, with plausible downstream health benefits lasting into adulthood among SMM living with HIV.

Spiraling Risk: Visualizing the multilevel factors that socially pattern HIV risk among gay, bisexual & other men who have sex with men using Complex Systems Theory

PURPOSE OF REVIEW

Global disparities in HIV infection, particularly among gay, bisexual, and other men who have sex with men (GBMSM), indicate the importance of exploring the multi-level processes that shape HIV's spread. We used Complex Systems Theory and the PRISMA guidelines to conduct a systematic review of 63 global reviews to understand how HIV is socially patterned among GBMSM. The purpose was to conduct a thematic analysis of the reviews to (1) synthesize the multi-level risk factors of HIV risk, (2) categorize risk across the socioecological model, and (3) develop a conceptual model that visualizes the interrelated factors that shape GBMSMS's HIV "risk."

RECENT FINDINGS

We included 49 studies of high and moderate quality studies. Results indicated that GBMSM's HIV risk stems from the individual, interpersonal, and structural levels of the socioecological model. We identified a few themes that shape GBMSM's risk of HIV infection related to biomedical prevention methods; sexual and sex-seeking behaviors; behavioral prevention methods; individual-level characteristics and syndemic infections; lived experiences and interpersonal relationships; country-level income; country-level HIV prevalence; and structural stigma. The multi-level factors, in tandem, serve to perpetuate GBMSM's risk of HIV infection globally. The amalgamation of our thematic analyses from our systematic reviews of reviews suggests that the risk of HIV infection operates in an emergent, dynamic, and complex nature across multiple levels of the socioecological model. Applying complex systems theory indicates how multilevel factors create a dynamic and reinforcing system of HIV risk among GBMSM.

Prevalence and shared risk factors of HIV in three key populations in Vietnam: A systematic review and meta-analysis

This study aims to estimate the prevalence of HIV among each of the three key populations in Vietnam: people who inject drugs (PWID), female sex workers (FSW), and men who have sex with men (MSM) and quantify their shared risk factors for HIV infection through a systematic review and meta-analysis of recent literature (published in 2001-2017) in the relevant topics. A total of 17 studies consisting of 16,304 participants were selected in this review. The meta-analysis results revealed that the pooled prevalence estimates with 95% confidence intervals (CIs) among PWID, FSW, and MSM were: 0.293 (0.164, 0.421), 0.075 (0.060, 0.089), and 0.085 (0.044, 0.126), respectively. The findings also indicated that injecting drug use (OR: 9.88, 95%CI: 4.47-15.28), multiperson use of injecting equipment (OR: 2.91, 95%CI: 1.69, 4.17), and inconsistent condom use (OR: 2.11, 95%CI: 1.33, 2.90) were the shared risk factors for HIV infection among these population groups. The findings highlighted the importance of HIV prevention approaches to addressing the shared sexual and drug-related practices among the key populations in consideration of their overlapping social networks.

Health inequalities in infectious diseases: a systematic overview of reviews

OBJECTIVES

The aim of this systematic overview of reviews was to synthesise available evidence on inequalities in infectious disease based on three dimensions of inequalities; inclusion health groups, protected characteristics and socioeconomic inequalities.

METHODS

We searched MEDLINE, Embase, Web of Science and OpenGrey databases in November 2021. We included reviews published from the year 2000 which examined inequalities in the incidence, prevalence or consequences of infectious diseases based on the dimensions of interest. Our search focused on tuberculosis, HIV, sexually transmitted infections, hepatitis C, vaccination and antimicrobial resistance. However, we also included eligible reviews of any other infectious diseases. We appraised the quality of reviews using the Assessment of Multiple Systematic Reviews V.2 (AMSTAR2) checklist. We conducted a narrative data synthesis.

RESULTS

We included 108 reviews in our synthesis covering all the dimensions of inequalities for most of the infectious disease topics of interest, however the quality and volume of review evidence and consistency of their findings varied. The existing literature reviews provide strong evidence that people in inclusion health groups and lower socioeconomic status are consistently at higher risk of infectious diseases, antimicrobial resistance and incomplete/delayed vaccination. In the protected characteristics dimension, ethnicity, and sexual orientation are important factors contributing to inequalities across the various infectious disease topics included in this overview of reviews.

CONCLUSION

We identified many reviews that provide evidence of various types of health inequalities in different infectious diseases, vaccination, and antimicrobial resistance. We also highlight areas where reviews may be lacking. The commonalities in the associations and their directions suggest it might be worth targeting interventions for some high risk-groups that may have benefits across multiple infectious disease outcomes rather than operating purely in infectious disease siloes.

Prevalence and risk factors for transactional sex among Swedish-born and foreign-born MSM in Sweden

BACKGROUND

Little is known about transactional sex (TS) (selling and buying sex) among men who have sex with men (MSM) in Sweden, especially among foreign-born MSM. This study aims to assess the prevalence and risk factors of TS (ever and in the previous five years) among MSM living in Sweden and to determine if there is a difference between Swedish-born MSM and foreign-born MSM.

METHODS

Swedish data from a multicountry online banner survey (EMIS-2017) was used (n = 4443). Multivariable regression analysis was applied to analyse the data.

RESULTS

The prevalence of ever-selling sex among all MSM participants was 13.2% and 5.9% in the previous five years. Selling sex ever and in the previous five years was higher among foreign-born MSM (16% and 8.4%, respectively) than Swedish-born MSM (12.7% and 5.4%, respectively). Among all participants, younger age (aOR:3.19, 95% CI:1.57-6.45) and really struggling to live on current income (aOR:3.37, 95% CI:2.29-4.96) increased the odds of selling sex. Being foreign-born MSM (aOR:1.33, 95% CI:1.02-1.73) and having had sex with a woman in the previous 12 months increased the odds of selling sex (aOR:1.44, 95% CI:1.00-2.07). The prevalence of ever buying sex among MSM participants in Sweden was 10.8% and 6.7% in the previous five years, with the same trend among foreign-born MSM (11.6% and 6.9%, respectively) and Swedish-born MSM (10.7% and 6.6%, respectively). Higher education and not having a current partner increased the odds of buying sex. Younger age was protective for buying sex (aOR:0.05, 95% CI:0.02-0.14). Among the foreign-born MSM, the length of stay in Sweden decreased the odds of buying sex (aOR: 0.98, 95% CI: 0.96-0.99).

CONCLUSIONS

The comparatively high prevalence of TS among MSM participants in Sweden, where buying sex is illegal, with a higher prevalence among foreign-born MSM participants, calls for sexual and reproductive health and rights interventions in this population. Increased attention, including HIV prevention programming and education, should be aimed at younger MSM, MSM struggling with their current income, and foreign-born MSM, as they are more likely to report selling sex.

Social identity support, descriptive norms, and economic instability in PrEP engagement for emerging adult MSM in the United States

Rates of pre-exposure prophylaxis (PrEP) uptake for HIV prevention continue to increase rapidly among men who have sex with men (MSM) in the United States (U.S.); however, these increases have been slower among young MSM. Emerging adulthood (ages 18-25) is a time of transitions and social development, resulting in increased vulnerability to HIV. Analyzing data from a cross-sectional survey of emerging adult MSM (ages 18-25 years; n = 281) in the Mid-Atlantic urban metropolitan region of the U.S., we examined how social identity support, descriptive PrEP norms, and economic instability were related to PrEP engagement. In structural equation models, PrEP norms were directly associated with PrEP engagement (β = 0.29, 95% CI = [0.12,0.46]) and social identity support was indirectly associated with PrEP engagement through its association with descriptive PrEP norms (β = 0.18, 95% CI = [0.09,0.28]). Economic instability was not significantly associated with PrEP engagement, although a negative trend was present (β = -0.19, 95% CI = [-0.39,0.02]). Our results suggest that an integrative socioecological model is appropriate for the study of PrEP engagement among emerging adult MSM. Efforts to increase PrEP engagement should support community capacity building, amplify positive descriptive PrEP norms, and address unmet economic needs.

Predicting the risk of HIV infection among internal migrant MSM in China: An optimal model based on three variable selection methods

Introduction

Internal migrant Men who have sex with men (IMMSM), which has the dual identity of MSM and floating population, should be more concerned among the vulnerable groups for HIV in society. Establishing appropriate prediction models to assess the risk of HIV infection among IMMSM is of great significance to against HIV infection and transmission.

Methods

HIV and syphilis infection were detected using rapid test kits, and other 30 variables were collected among IMMSM through questionnaire. Taking HIV infection status as the dependent variable, three methods were used to screen predictors and three prediction models were developed respectively. The Hosmer-Lemeshow test was performed to verify the fit of the models, and the net classification improvement and integrated discrimination improvement were used to compare these models to determine the optimal model. Based on the optimal model, a prediction nomogram was developed as an instrument to assess the risk of HIV infection among IMMSM. To quantify the predictive ability of the nomogram, the C-index measurement was performed, and internal validation was performed using bootstrap method. The receiver operating characteristic (ROC) curve, calibration plot and dynamic component analysis (DCA) were respectively performed to assess the efficacy, accuracy and clinical utility of the prediction nomogram.

Results

In this study, 12.52% IMMSMs were tested HIV-positive and 8.0% IMMSMs were tested syphilis-positive. Model A, model B, and model C fitted well, and model B was the optimal model. A nomogram was developed based on the model B. The C-index of the nomogram was 0.757 (95% CI: 0.701-0.812), and the C-index of internal verification was 0.705.

Conclusions

The model established by stepwise selection methods incorporating 11 risk factors (age, education, marriage, monthly income, verbal violence, syphilis, score of CUSS, score of RSES, score of ULS, score of ES and score of DS) was the optimal model that achieved the best predictive power. The risk nomogram based on the optimal model had relatively good efficacy, accuracy and clinical utility in identifying internal migrant MSM at high-risk for HIV infection, which is helpful for developing targeted intervention for them.

Selling sex in the context of substance use: social and structural drivers of transactional sex among men who use opioids in Maryland

BACKGROUND

Transactional sex is an important driver of HIV risk among people who use drugs in the USA, but there is a dearth of research characterizing men's selling and trading of sex in the context of opioid use. To identify contextually specific factors associated with selling or trading sex in a US population of men who use drugs, we cross-sectionally examined social and structural correlates of transactional sex among men who use opioids (MWUO) in Anne Arundel County and Baltimore City, Maryland.

METHODS

Between July 2018 and March 2020, we used targeted sampling to recruit men reporting past-month opioid use from 22 street-level urban and suburban recruitment zones. MWUO completed a 30-min self-administered interview eliciting substance use histories, experiences with hunger and homelessness, criminal justice interactions, and transactional sex involvement. We identified correlates of recent (past 3 months) transactional sex using multivariable log-binomial regression with cluster-robust standard errors.

RESULTS

Among 422 MWUO (mean age 47.3 years, 73.4% non-Hispanic Black, 94.5% heterosexual), the prevalence of recent transactional sex was 10.7%. In multivariable analysis, younger age (adjusted prevalence ratio [aPR] 0.98, 95% confidence interval [95% CI] 0.97-0.99, p < 0.001), identifying as gay/bisexual (aPR = 5.30, 95% CI 3.81-7.37, p < 0.001), past-month food insecurity (aPR = 1.77, 95% CI 1.05-3.00, p = 0.032), and injection drug use in the past 3 months (aPR = 1.75, 95% CI 1.02-3.01, p = 0.043) emerged as statistically significant independent correlates of transactional sex.

CONCLUSIONS

Synergistic sources of social and structural marginalization-from sexuality to hunger, homelessness, and injection drug use-are associated with transactional sex in this predominantly Black, heterosexual-identifying sample of MWUO. Efforts to mitigate physical and psychological harms associated with transactional sex encounters should consider the racialized dimensions and socio-structural drivers of transactional sex among MWUO.

Barriers and facilitators to utilisation of public sexual healthcare services for male sex workers who have sex with men (MSW-MSM) in The Netherlands: a qualitative study

BACKGROUND

Male sex workers who have sex with men (MSW-MSM) are a high-risk group for sexually transmitted infections (STI) including human immunodeficiency virus (HIV). Provision of sexual services by MSW-MSM has shifted to the internet. Consequently, MSW-MSM have become hidden to care for providers of sexual healthcare services (SHS). The aim of this study was to 1) assess characteristics of the MSW-MSM population and 2) assess MSW-MSM's perceived barriers and facilitators to utilise SHS provided free and anonymously by the public health STI clinic in The Netherlands.

METHODS

For this qualitative study, semi-structured individual in-depth interviews were conducted with 20 MSW-MSM who worked home-based in the Dutch province of Limburg. Participants were recruited from November 2018 to June 2019 by purposive sampling until saturation was reached via 1) five websites and smartphone applications commonly used by MSW-MSM, 2) STI clinic, 3) two gay saunas. A theory-informed interview guide was developed including themes such as sexuality, sex work, SHS and barriers and facilitators to SHS utilisation. The interviews' recordings were transcribed verbatim and thematically analysed by inductive and deductive coding with Atlas.ti 8.

RESULTS

The interviewed MSW-MSM were diverse in age (range: 18 - 66; median: 39.5) and mostly western European (85%). Identified barriers to SHS utilisation were lack of self-identification as homosexual and sex worker, perceived stigma on sex work and MSM, the lack of awareness of SHS and a low STI risk perception. Identified facilitators were trust in and positive attitude towards SHS, awareness of SHS's anonymous, confidential and free-of-charge nature, high STI risk perception and knowledgeable about STI/HIV. MSW-MSM-identified implications for SHS-providers were promotion of SHS on online MSW-MSM and general platforms (e.g. Facebook), offering one-on-one online and informal communication with an SHS-provider (e.g. STI clinic nurse) and providing STI (testing) information.

CONCLUSION

The MSW-MSM population's diversity and identified barriers, facilitators and implications should be taken into account to optimize accessibility and utilisation of SHS for MSW-MSM in Western Europe. SHS-providers could facilitate sex work disclosure by personally asking patients about sex in exchange for money or goods in a non-judgmental manner and explaining the medical relevance of disclosure.

Traumatic Associations amongst Men and Women Selling Sex in the Philippines

Background: The present study explores trauma-related factors (human trafficking or physical or sexual violence during transactional sex) associated with interest in future community mobilization around health and human rights. Community mobilization among persons selling sex aims to help participants overcome trauma and increase self-reliance through peer advocacy and collective action for improved human conditions. However, how violence and human trafficking impact community mobilization participation among men and women selling sex is less known. Methods: The current study uses data (n = 96) from the baseline survey of participants in the pilot Kapihan community mobilization intervention, which recruited 37 men and 59 women from Metro Manila, Philippines. Multiple logistic regression was used to analyze factors (violence, human trafficking) independently associated with the desire to participate in community mobilization, adjusting for socio-demographic variables. Results: An increased interest in participating in community mobilization around health and human rights was significantly associated with having experienced physical or sexual abuse in the sex trade (AOR = 10.86; CI 1.48–79.69) and less history of trafficking (AOR = 0.14; 95% CI 0.02–0.97), adjusting for age, gender, income, number of children, and whether they considered group goals or had previously participated in community mobilization. Conclusion: Understanding the impact of experiences with physical and sexual violence and human trafficking on health and human rights mobilization participation can inform the design and recruitment for future community-based interventions. Further investigation needs to explore why experiences with human trafficking, having more children, or being a woman lessened the desire to mobilize in this Philippines context. Findings imply that trauma may be more complex. More work is needed to better identify interventions for those with a history of being trafficked or victimized by physical or sexual violence during transactional sex exchanges.

Correlates of Substance Misuse, Transactional Sex, and Depressive Symptomatology Among Partnered Gay, Bisexual and Other Men Who Have Sex with Men in South Africa and Namibia

Despite having some of the world's highest rates of HIV, there is a lack of knowledge on correlates of transmission risk among gay, bisexual and other men who have sex with men in Southern Africa. There is even less known about the factors that shape HIV risk in male-male couples. Using data from Together Tomorrow, a study of partnered GBMSM in South Africa and Namibia, this study assessed the individual and dyadic correlates of three major HIV risk factors in this population: substance misuse, transactional sex, and depressive symptomatology. Data were collected during November 2016-March 2017 via a quantitative survey conducted with 140 partnered MSM (70 couples) in Windohoek, Keetmanshoop, Walvis Bay, and Swakopmund, Namibia and 300 partnered MSM (150 couples) in Pietermaritzburg and Durban, KwaZulu-Natal, South Africa for a total sample size of 440 partnered MSM (220 couples). Results of multilevel modeling analyses show several significant factors present in partnered GBMSM that differ from studies of single GBMSM, with intimate partner violence being a significant correlate across all three risk factors. Future interventions should consider dyadic approaches and integrate IPV prevention and mitigation efforts to reduce HIV in this population as part of a multisectoral approach. To reduce rates of HIV in partnered GBMSM in Namibia and South Africa multilevel, multisectoral work is needed in policy, social norms change, and relationship-focused dyadic interventions to reduce the social and structural stigma facing male couples.

Diagnosis and case finding according to key partner risk populations of people living with HIV in Nigeria: A retrospective analysis of community-led index partner testing services

BACKGROUND

The HIV epidemic in Nigeria is concentrated in Key Populations (KP), people who inject drugs (PWID), men who have sex with men (MSM), female sex workers (FSW), and partners of people living with HIV. Due to stigma and discrimination, these groups have low access to HIV testing services (HTS) and linkage to treatment is challenging. To address this gap, index partner testing, targeting sexual contacts and injecting partners of KP index clients, was introduced in 2017.

METHODS

The study was a retrospective analysis of community-led HIV index partner testing-involving review of secondary data from partner notification services registers. Between October 1, 2018, and September 30, 2019, HIV testing as part of index partner testing services was offered at nightclubs, hotels, and community-based ART clinics in the states of Akwa Ibom, Cross River, and Lagos. Index testing was assisted by peer navigators. We used provider and passive Partner Notification (PN) methods. In-person and social network methods were used to recruit partners of KP. We described the implementation of index partner testing services as part of the national KP program, analyzed PN delivery models, and calculated HIV seropositivity among persons who underwent Index Partner Testing. One-Way ANOVA and Tukey-HSD test were performed to determine whether the differences in mean HIV seropositivity between partners are statistically significant.

FINDINGS

PN was predominantly done through provider referral 5,159 (68.3%) and passive/client referral 2,278 (30.1%). A total of 3,119 index partners; 1,322 FSW (42.4%), 1,255 MSM (40.2%) and 542 PWID (17.4%) identified 8,989 sexual and injecting partners (index partner ratio 1:2.9). Among the partners, 7,556 (84.1%) were first-time testers, and 79.4% (5,999) of male partners tested. Of the 3,753 (49.7%) partners who tested HIV-positive, 3,492 (93.0%) were enrolled in HIV care. HIV seropositivity rate was 65.5% (1,021/1,557) among females and 45.5% (2,732/5,999) among males and was disproportionately higher among PWID injecting partners 99.1% (581/586), PWID sexual partners 98.9% (433/438) and MSM sexual partners 95.6% (605/633) in Cross river compared with 71.4% (575/805) in FSW sexual partners.

INTERPRETATIONS

Including index partner testing as part of a community-led HTS can help improve HIV case-finding approach for KP, particularly for reaching first-time testers, male KP, and persons not yet diagnosed with HIV. Scale-up of index partner testing within community-led HTS is essential for achieving the United Nations 95-95-95 goals.

FUNDING

This research received no specific grant from any funding agency in the public, commercial or not-for-profit sectors.

Factors associated with transactional sex among a cohort of gay, bisexual, and other men who have sex with men in Vancouver, Canada

Background Gay, bisexual, and other men who have sex with men (GBM) who engage in transactional sex (sex in exchange for drugs, money, or goods) experience increased risk of sexually transmitted infections (STI), including HIV. This study explored additional psychosocial and health-related factors associated with transactional sex among GBM. Methods Respondent-driven sampling was used to recruit GBM in Vancouver, Canada, from 2012 to 2015, with follow up every 6months until July2019. We examined factors associated with transactional sex using multivariable three-level mixed-effects modelling. Results Among 698 GBM, 22.1% reported ever receiving drugs, money, or goods for sex. Transactional sex was more likely to be reported by GBM who were younger (<30years) and who had lower incomes, less education, and insecure housing. GBM reporting transactional sex were more likely to report substance use (i.e. crystal methamphetamine, poppers, GHB, and non-steroid injection drugs) and higher risk sexual behaviours (i.e. more sex partners, sex party attendance, and condomless anal sex with serodifferent or unknown HIV status partners); however, they were no more likely to be living with HIV or to report a recent bacterial STI diagnosis. GBM who reported higher loneliness, anxiety, and cognitive escape were also more likely to report transactional sex. Conclusions More than one-fifth of GBM in Vancouver reported transactional sex and those who did were more likely to also experience psychosocial stressors, increased substance use, and higher risk sexual behaviours. Programs which consider the interconnections of personal, social, and structural challenges faced by GBM engaging in transactional sex are necessary to support improved mental, physical, and sexual health for these men.

Linking racism and homonegativity to healthcare system distrust among young men of color who have sex with men: Evidence from the Healthy Young Men's (HYM) study

BACKGROUND

Experiences with racism predict healthcare system distrust among people of color, but Black and Latino young men who have sex with men (YMSM) also experience overlapping forms of stigma associated with their sexual identities and behaviors (i.e., homonegativity and internalized homonegativity). These forms of minority stress may drive healthcare system distrust among Black and Latino YMSM but have received far less attention.

OBJECTIVES

To examine the associations of racism, homonegativity, and internalized homonegativity with healthcare system distrust among a community sample of Black and Latino YMSM.

METHODS

Data came from waves 2-4 (years 2017-2018) of the Healthy Young Men's study, a longitudinal cohort study of Black and Latino YMSM living in Los Angeles County. Data across waves (n = 424, nobs = 1272) were combined and analyzed using a fixed effects approach and adjusting for repeated measures across participants. A series of regression models that added sets of covariates (demographics, syndemic indicators, and health-related factors) were tested to examine associations of racism, homonegativity, and internalized homonegativity with healthcare system distrust.

RESULTS

Adjusting for demographics and syndemic indicators, racism, but not homonegativity or internalized homonegativity, was associated with healthcare system distrust. Adjustment for health-related factors had little impact on results.

CONCLUSIONS

Among Black and Latino YMSM, greater exposure to racism is associated with greater healthcare system distrust. Efforts to strengthen healthcare system trust should explicitly target the institutional policies that disproportionately harm people of color.

Ecological and Syndemic Predictors of Drug Use During Sex and Transactional Sex among U.S. Black Men Who Have Sex with Men: A Secondary Data Analysis from the HPTN 061 Study

Threats to sexual health among U.S. Black men who have sex with men (MSM) may manifest in a context of social adverse experiences. Situational sex is one such context, which we characterize as sexual behaviors driven either by a desire to cultivate a specific sexual experience or attributable to social vulnerability. Two characterizations of situational sex explored in this study were drug use during sex and transactional sex. Guided by ecological and syndemic frameworks, we conducted a secondary data analysis of social conditions and sexual behaviors among a prospective cohort of Black MSM from the HIV Prevention Trial Network (HPTN) 061 study. Using structural equation modeling, this analysis examined the indirect effect of syndemic factors (substance use, depression, violence exposure) in the relationship between ecological constructs (anti-Black/homophobic stigma, childhood violence, and economic vulnerability) and situational sex (drug use during sex, transactional sex). Model fit indices, CFI (.870) and SRMR (.091), demonstrated reasonable fit. Significant indirect effects emerged via substance use for economic vulnerability (indirect effect = .181, 95% CI [.078, .294]) and anti-Black/homophobic violence and stigma (indirect effect = .061, 95% CI [.008, .121]) on drug use during sex; as well as on transactional sex (economic vulnerability indirect effect = .059, 95% CI [.018, .121] and anti-Black/homophobic stigma and violence indirect effect = .020, 95% CI [.003, .051]). Findings implicate the need for social and fiscal intervention to address upstream, ecological, and syndemic factors that influence inherent vulnerability of situational sex and overall threats to sexual health among Black MSM.

Transactional Sex Is Associated with Income Level and Psychosocial Health Problems among Gay and Bisexual Men (GBM) in Nigeria, Africa

Gay and bisexual men (GBM) who report engagement in transactional sex are at increased risk for HIV acquisition. The current study aimed to assess the prevalence of transactional sex and its association with demographic characteristics, social marginalization, HIV sexual risk behaviors, psychosocial health problems, and access to healthcare services among a multi-site sample of GBM in Nigeria. Bivariate and multivariable logistic regression were used to examine factors associated with engagement in transactional sex in the previous 3 months. More than a third (39.6%) of the participants reported engagement in transactional sex in the previous 3 months. In the multivariable model, factors associated with engagement in transactional sex included: reporting a monthly income of 30,000 Naira [adjusted odds ratio (aOR) 1.98; 95% CI: 1.12 to 3.35], compared to 30,000 or more Naira monthly income, reporting 4 or more receptive anal sex acts in the previous 30 days (aOR 2.45; 95% CI: 1.31 to 4.57) compared to reporting none, and having depressive symptoms (aOR 1.82; 95% CI: 1.06 to 3.14). There is an urgent need for interventions that address the economic disenfranchisement and psychosocial problems experienced by GBM in Nigeria, which has implications for sexual health.

Geographical Disparities in HIV Seroprevalence Among Men Who Have Sex with Men and People Who Inject Drugs in Nigeria: Exploratory Spatial Data Analysis

BACKGROUND

The assessment of geographical heterogeneity of HIV among men who have sex with men (MSM) and people who inject drugs (PWID) can usefully inform targeted HIV prevention and care strategies.

OBJECTIVE

We aimed to measure HIV seroprevalence and identify hotspots of HIV infection among MSM and PWID in Nigeria.

METHODS

We included all MSM and PWID accessing HIV testing services across 7 prioritized states (Lagos, Nasarawa, Akwa Ibom, Cross Rivers, Rivers, Benue, and the Federal Capital Territory) in 3 geographic regions (North Central, South South, and South West) between October 1, 2016, and September 30, 2017. We extracted data from national testing registers, georeferenced all HIV test results aggregated at the local government area level, and calculated HIV seroprevalence. We calculated and compared HIV seroprevalence from our study to the 2014 integrated biological and behavioural surveillance survey and used global spatial autocorrelation and hotspot analysis to highlight patterns of HIV infection and identify areas of significant clustering of HIV cases.

RESULTS

MSM and PWID had HIV seroprevalence rates of 12.14% (3209/26,423) and 11.88% (1126/9474), respectively. Global spatial autocorrelation Moran I statistics revealed a clustered distribution of HIV infection among MSM and PWID with a <5% and <1% likelihood that this clustered pattern could be due to chance, respectively. Significant clusters of HIV infection (Getis-Ord-Gi* statistics) confined to the North Central and South South regions were identified among MSM and PWID. Compared to the 2014 integrated biological and behavioural surveillance survey, our results suggest an increased HIV seroprevalence among PWID and a substantial decrease among MSM.

CONCLUSIONS

This study identified geographical areas to prioritize for control of HIV infection among MSM and PWID, thus demonstrating that geographical information system technology is a useful tool to inform public health planning for interventions targeting epidemic control of HIV infection.

Decrease in incidence of sexually transmitted infections symptoms in men who have sex with men enrolled in a quarterly HIV prevention and care programme in West Africa (CohMSM ANRS 12324-Expertise France)

OBJECTIVE

Although men who have sex with men (MSM) are at high risk of STI, their access to tailored healthcare services remains limited in West Africa. We assessed the change in STI symptoms incidence over time among MSM enrolled in a quarterly HIV prevention and care programme in four cities in Burkina Faso, Côte d'Ivoire, Mali and Togo.

METHODS

We performed a prospective cohort study in MSM followed up between 2015 and 2019. Men aged over 18 who reported anal sex with another man within the previous 3 months were offered quarterly syndromic diagnosis and treatment for STI, as well as HIV testing, peer-led counselling and support. Condoms and lubricants were also provided. The change in STI symptoms incidence during follow-up was investigated using a non-parametric trend test and mixed-effect Poisson regression models.

RESULTS

816 participants were followed for a total duration of 1479 person-years. 198 participants (24.3%) had at least one STI symptom during follow-up. Overall, STI symptoms incidence was 20.4 per 100 person-years (95% CI 18.4 to 22.6), ranging from 15.3 in Abidjan to 33.1 in Ouagadougou (adjusted incidence rate ratio (aIRR) 2.39, 95% CI 1.55 to 3.69, p<0.001). STI symptoms incidence was 16.8 and 23.0 per 100 person-years in HIV-positive and HIV-negative participants, respectively (aIRR 0.77, 95% CI 0.57 to 1.04, p=0.087). STI symptoms incidence decreased significantly from 29.9 per 100 person-years in the first 6 months to 8.6 at 30-35 months of follow-up (aIRR per 6-month increase 0.84, 95% CI 0.77 to 0.92, p<0.001).

CONCLUSION

STI symptoms incidence decreased over time but the overall burden of STI appeared to be very high in MSM followed up in West Africa. STI services including counselling, diagnosis and treatment should be reinforced. Laboratory tests that allow accurate diagnosis of STI are required. Strengthening STI services will be critical for controlling the HIV and STI epidemics in this vulnerable population and in the general population.

TRIAL REGISTRATION NUMBER

NCT02626286.

Use of Smartphone to Seek Sexual Health Information Online Among Malaysian Men Who Have Sex with Men (MSM): Implications for mHealth Intervention to Increase HIV Testing and Reduce HIV Risks

In settings where stigma and discrimination toward men who have sex with men (MSM) are high or illegal, like in Malaysia, innovative methods to anonymously reach them are urgently needed. The near ubiquitous availability of mobile technology, including smartphones, has the potential to open new frontiers (such as mHealth) to prevent HIV and other sexually transmitted infections (STIs). The extent to which MSM use mHealth tools for HIV and STI prevention in the Malaysia context, however, is unknown. A cross-sectional online survey in 622 Malaysian MSM was conducted between July and November 2017. Participants were recruited via advertisements on mobile apps frequently used by MSM. In addition to demographic, smartphone access and utilization, and other information were assessed using logistic regression to determine factors associated with the use of a smartphone to search for online sexual health information. Nearly all (99.2%) participants owned a smartphone, with 63% reported having used one to seek sexual health information, including HIV/STIs. Overall, 96% used smartphones to find sexual partners, with high levels of HIV risk behavior reported. Independent correlates of smartphone use to seek online sexual health information included older age (aOR 0.943, p = 0.005), higher education (aOR 2.14, p = 027), recent (past year) HIV testing (aOR 3.91, p = 0.026), and seeking sexual partners using geosocial networking apps (aOR 5.58, p = 0.006). These findings suggest high smartphone use by high-risk MSM to seek sexual health information and suggests that mHealth strategies may be an effective strategy to engage MSM in HIV prevention activities.

Retention of a cohort of men who have sex with men and transgender women at risk for and living with HIV in Abuja and Lagos, Nigeria: a longitudinal analysis

INTRODUCTION

Men who have sex with men (MSM), and transgender women (TGW), face specific obstacles to retention in care, particularly in settings with stigmatization such as sub-Saharan Africa. We evaluated the impacts of HIV status and other factors on loss-to-follow-up (LTFU) and visit adherence among MSM and TGW in Abuja and Lagos, Nigeria.

METHODS

TRUST/RV368 is an open cohort that provides comprehensive and integrated prevention and treatment services for HIV and sexually transmitted infections (STIs) at community venues supportive of sexual and gender minorities. Recruitment began in March 2013 and participants were followed every three months for up to 18 months. LTFU was defined as not presenting for an expected visit in the past 180 days. Visit adherence was calculated as a rate of completed visits adjusted by the number of three-month intervals elapsed since enrolment. HIV and other factors predictive of LTFU and visit adherence were evaluated using Cox proportional hazards and Poisson regression models, respectively.

RESULTS

A total of 1447 participants who completed enrolment evaluations over two visits as of November 2018 were included in these analyses. Their median age was 24 years (interquartile range [IQR]: 21 to 28) and 53% (n = 766) were living with HIV. LTFU occurred in 56% (n = 808) and visit adherence was 0.62 (95% confidence interval: 0.61 to 0.64) visits per three-month interval. Participants at risk and living with HIV had median follow-up times of 12 months (IQR: 6 to 22), and 21 months (IQR: 12 to 30), respectively (p < 0.01). After controlling for other factors, LTFU was less common among participants living with HIV or other STIs and more common among those who did not own a cell phone, sold sex and had never undergone HIV testing prior to enrolment. These factors had parallel associations with visit adherence.

CONCLUSIONS

Retention was suboptimal in Nigerian clinics designed to serve MSM and TGW. Particularly high LTFU and low visit adherence among participants at risk for HIV could complicate deployment of HIV prevention interventions. Marketing the benefits of testing, improving access to cell phones and nurturing more trust with clients may improve retention among marginalized communities in Nigeria.

Prevalence of HIV infection and related risk factors among young Thai men between 2010 and 2011

Introduction

Understanding the current epidemiology of human immunodeficiency virus (HIV) infection in Thailand will facilitate more effective national HIV prevention programs. This study aimed to determine the prevalence and risk factors for HIV infection among young Thai men.

Methods

A total survey was conducted of Royal Thai Army new conscripts, participating in the national HIV surveillance in November 2010 and May 2011. Behavioral risk factors for HIV infection were determined using a standardized survey questionnaire in the total study population and men who have sex with men (MSM) subgroup.

Results

A total of 301 (0.5%) HIV infected young Thai men were identified from the total study population (63,667). Independent risk factors associated with HIV infection among the total study population included being single (adjusted Odds Ratio [AOR] 1.6, 95% Confidence Interval [CI] 1.1–2.2), having no formal education (AOR 6.5, 95% CI 2.3–18.4) or a bachelor’s degree (AOR 1. 8, 95% CI 1.0–3.0), engaging in bisexual (AOR 3.7, 95% CI 2.4–5. 6) or exclusively homosexual activity (AOR 14.4, 95% CI 10.4–19.8), having a history of Sexually Transmitted Infection (STI) (AOR 2.3, 95% CI 1.6–3.3) and having sex in exchange for gifts/money (AOR 2.0, 95% CI 1. 5–2.8). A total of 4,594 (7.9%) MSM were identified, of which 121 (2.6%) were HIV infected. The prevalence of HIV infection among MSM in urban (2.8%) and rural (2.4%) areas were relatively comparable (p-value = 0.44). Of the identified MSM, 82.5% reported having sexual desire with females only. Risk factors associated with HIV infection in the MSM subgroup included living in the western region (AOR 3.5, 95% CI 1.2–10.4), having a bachelor’s degree (AOR 2.7, 95% CI 1.2–5.7), having a history of exclusive receptive (AOR 3.6, 95% CI 1.6–7.7) or versatile anal sex (AOR 4.7, 95% CI 3.0–7.5) and history of having sex in exchange for gifts/money (AOR 2.3, 95% CI 1.5–3.5).

Conclusion

The prevalence of HIV infection among young Thai men has continued to be below 0.5% in 2010 and 2011. High risk sexual activity, including MSM, played a major role in the HIV epidemic among this population. Effective HIV prevention programs should cover MSM who have heterosexual desire as well as having sex in exchange for gifts/money and be implemented in both urban and rural areas.

A Syndemic Model of Exchange Sex Among HIV-Positive Men Who Have Sex With Men

Exchange sex is a behavior associated with HIV transmission risk among men who have sex with men (MSM). Few studies have examined exchange sex among HIV-positive MSM. We utilize a syndemic framework to account for co-occurring psychosocial problems that suggest the presence of intertwining epidemics (i.e., syndemics), which have not been examined within the context of exchange sex among HIV-positive MSM. In 2015, MSM were recruited via online sexual networking Web site and app advertisements for Sex Positive![+], a video-based online intervention that aimed to improve health outcomes for men living with HIV. Participants completed surveys every three months for a year. Surveys covered demographics, drug use, exchange sex, intimate partner violence (IPV), and past 2-week depressive symptoms. We conducted three logistic regression models to assess syndemic factors associated with exchange sex in the past 3 months. Of the 722 HIV-positive MSM included in the sample, 59 (8%) reported exchange sex in the past 3 months at 12-month follow-up. HIV-positive MSM who had more syndemic factors had greater odds of exchange sex. Exchange sex was associated with being African-American/Black, age 18-29 years, past and present experiences with IPV, stimulant use, polysubstance use, and depressive symptoms. Exchange sex was associated with multiple psychosocial factors, indicating exchange sex may be part of a syndemic involving substance use, depression, HIV, and IPV. Interventions should address the social and behavioral circumstances that perpetuate environments that can foster multiple negative health outcomes.

Sex Partner Behavior Variation Related to Network Position of and Residential Proximity to Sex Partners Among Young Black Men Who Have Sex with Men

This analysis examines how sex behaviors are influenced by a sex partner's network bridging position and the residential proximity between the two. The study sample consisted of 437 young black men who have sex with men (YBMSM) in Chicago and their sex partners (2013-2014). Dyadic analyses that clustered on individuals using generalized estimating equations (n = 1095 relationships) were conducted to assess the associations between different HIV-related sexual behaviors and the network position of and residential proximity to a partner. The odds of group sex was higher with partners who had high network bridging, regardless of how close they lived to one another. The odds of transactional sex was higher with partners who had high network bridging and lived in a different region of the city. Sex behaviors associated with an increased risk of HIV transmission were associated with the network structural position of and residential proximity to partners among YBMSM.

Application of the "syndemics" theory to explain unprotected sex and transactional sex: A crosssectional study in men who have sex with men (MSM), transgender women, and non-MSM in Colombia

Introduction:

Men who have sex with men (MSM) and transgender women (TW) in Colombia are highly affected by HIV. To improve understanding of the role of HIV risk behaviors in HIV acquisition, we used the syndemic framework, a useful concept to inform prevention efforts.

Objective:

To examine the effect of four psychosocial conditions, namely, forced sex, history of childhood sexual abuse, frequent alcohol use, and illicit drug use on unprotected sex and the synergistic effects (“syndemic” effects) of these conditions on HIV risk behavior.

Materials and methods:

We enrolled a total of 812 males (54.7% men who have sex with men, MSM; 7.3% transgender women, and 38% non-MSM). The participants were recruited from neighborhoods of low socioeconomic status through free HIV-counseling and-testing campaigns. We performed Poisson regression analysis to test the associations and interactions between the four psychosocial conditions and unprotected sex with regular, occasional, and transactional partners. To test the “syndemic” model, we assessed additive and multiplicative interactions.

Results:

The prevalence of any psychosocial condition was 94.9% in transgender women, 60.1% in MSM, and 72.2% in non-MSM. A higher likelihood of transactional sex was associated in MSM (prevalence ratio (PR)=7.41, p<0.001) and non-MSM (PR=2.18, p< 0.001) with three or all four conditions compared to those with one condition. Additive interactions were present for all combinations of psychosocial problems on transactional sex in MSM. No cumulative effect or additive interaction was observed in transgender women.

Conclusions:

Our study highlights the need for bundled mental health programs addressing childhood sexual abuse, illicit drug use, and frequent alcohol use with other HIV prevention programs.

"I Couldn't Afford to Resist": Condom Negotiations Between Male Sex Workers and Male Clients in Mombasa, Kenya

Male sex workers in Kenya face a disproportionate burden of HIV and often engage in condomless sex with their commercial partners, yet little is known about how condom negotiations between male sex workers and clients take place. We conducted semi-structured interviews with 25 male sex workers and 11 male clients of male sex workers in Mombasa, Kenya, to examine barriers and facilitators to condom use and how condom use negotiation takes place in these interactions. Participants reported positive attitudes toward condom use and perceived condom use to be a health-promoting behavior. Barriers to condom use included extra-payment for condomless sex, low perceived HIV/STI risk with some sexual partners, perceived reduced pleasure associated with using condoms, alcohol use, and violence against male sex workers by clients. Future interventions should address individual- and structural-level barriers to condom use to promote effective condom use negotiation between male sex workers and male clients.

Barriers to Accessing Sexual Health Services for Transgender and Male Sex Workers: A Systematic Qualitative Meta-summary

Access to safe and effective sexual healthcare services for transgender and male sex workers (TMSW) is a human right. Globally, TMSW experience a higher prevalence of human immunodeficiency virus (HIV) and sexually transmitted infections than the general population or other sex workers, suggesting the existence of unique challenges for this group when accessing healthcare. A systematic database search identified 22 qualitative papers addressing barriers to accessing sexual healthcare services for TMSW. These papers were critically evaluated for adherence to best practice standards for qualitative research and research with sex workers. A coding process identified five themes. Stigma was the predominant barrier, and was divided into stigma related to sexuality, gender identity, HIV status, sex worker status, and internalised stigma. Other barriers were confidentiality concerns, sexual health literacy, fatalism, and structural barriers. Each of these themes were informed by the wider context of stigma. The literature presents a complex syndemic of social disadvantage and exclusion acting to produce and reinforce health disparities related to sexual health and access to screening and treatment for TMSW.

HIV Prevention Research on Men Who Have Sex With Men: A Scoping Review of Systematic Reviews, 1988-2017

In the United States, men who have sex with men (MSM) are disproportionately affected by HIV. To identify research gaps and inform HIV prevention for MSM, we conducted a scoping review of systematic reviews using CDC's Prevention Research Synthesis database. Eligibility criteria comprised English-language systematic reviews focused on HIV prevention for MSM, published during 1988-2017, and included at least one U.S. primary study. We coded data type, subpopulations, topics, and key findings. To assess study quality, we used the Assessment of Multiple Systematic Reviews (AMSTAR). Among 129 relevant systematic reviews, study quality was high or moderate for 63%. Most common topics were sexual behavior and disease vulnerability. The most frequently mentioned MSM subgroups were HIV-positive, Black or African American, and young. Research gaps include Hispanic/Latino MSM, pre-exposure prophylaxis (PrEP), treatment as prevention, social determinants of health, health disparities, syndemics, and protective factors for sexual health.

Transactional sex among men who have sex with men participating in the CohMSM prospective cohort study in West Africa

Although the HIV epidemic is generalized in West Africa, some population groups such as men who have sex with men (MSM), especially those engaged in transactional sex (TS), are thought to be particularly more vulnerable to HIV than others. However, few data are available to help identify their health-related needs with a view to implementing targeted prevention interventions. To fill this knowledge gap, we aimed to characterize MSM reporting TS (MSM-TS) and to identify factors associated with their sexual practices using data from the prospective cohort study CohMSM, which was conducted in Burkina Faso, Côte d’Ivoire, Mali and Togo. Three stigmatization sub-scores were constructed (experienced, perceived and internalized). The generalized estimating equation method was used for data analysis. Of the total 630 HIV-negative MSM recruited in CohMSM, 463, 410 and 244 had a follow-up visit at 6, 12 and 18 months, respectively. In a total of 1747 follow-up visits, 478 TS encounters were reported by 289 MSM-TS (45.9%). Of the latter, 91 regularly reported TS (31.5%), 55 (19.0%) stopped reporting TS after baseline, and 53 (18.3%) reported TS after baseline and 90 (31.1%) occasionally reported TS. The following variables, regarding the previous 6 months, were positively associated with TS: being younger (aOR[95%CI]:1.86[1.39–2.50]), less educated (aOR[95%CI]:1.49[1.09–2.03]), unmarried status (aOR[95%CI]:1.79[1.10–2.93]), satisfaction with current sex life (aOR[95%CI]:1.41[1.06–1.88]), group sex with men (aOR[95%CI]:2.07[1.46–2.94]), multiple male sexual partners (aOR[95%CI]:1.85[1.40–2.44]), receptive or versatile anal sex with male partners (aOR [95%CI]:1.48[1.12–1.96]), giving benefits in exchange for sex with a man (aOR[95%CI]:2.80[1.97–3.98]), alcohol consumption (aOR[95%CI]:1.44[1.08–1.93]) and drug use (aOR[95%CI]:1.82[1.24–2.68]) during sex, and finally experiencing stigmatization (aOR [95%CI]:1.15[1.07–1.25]). Condom use during anal sex (aOR[95%CI]:0.73[0.53–0.99]) was negatively associated with TS.

Transactional Sex, Substance Use, and Sexual Risk: Comparing Pay Direction for an Internet-Based U.S. Sample of Men Who Have Sex with Men

Demographic, behavioral, and structural factors among four mutually exclusive transactional sex categories were assessed in an online sample of 7217 sexually active US men who have sex with men (MSM): (1) No Trade Sex group (87%); (2) Sellers, accepting money or drugs for sex (5%); (3) Buyers, giving money or drugs for sex (6%); and (4) Sellers and Buyers, accepting and giving money or drugs for sex (2%). Separate multivariable logistic regressions compared men who did not report past 60-day transactional sex with men in the three transactional sex groups. Sellers were more likely to report being black or Asian (versus white), low income, a recent STI diagnosis, six or more recent male anal sex partners, and polydrug use. Buyers were more likely to report being older, higher income, urban residence, incarceration history, a recent STI diagnosis, and having non-main sex partners. Sellers and Buyers were more likely to report a higher income, incarceration history, six or more recent male anal sex partners, and polydrug use. Findings suggest that public health policy and HIV prevention harm reduction strategies should address the distinct sexual and behavioral risk patterns among MSM who engage in transactional sex based on payment direction.

Survival now versus survival later: immediate and delayed HIV risk assessment among young Jamaican men who have transactional sex with men

This study explored the experiences of young Jamaican men who have sex with men who engaged in transactional sex as a result of homelessness, family neglect or limited financial resources. It further examined the circumstances that affect their immediate or delayed decisions around sexual risk and increased vulnerability for HIV infection. Barriers experienced when accessing condoms, healthcare, HIV testing and other prevention services are also described. Twenty in-depth interviews and one focus group with 10 participants in various parishes in Jamaica were conducted. Findings from this study reveal how stigma and discrimination in the form of pervasive homophobia-influenced participation in the street economy via transactional sex. Socio-structural factors at family and commity level led to diminished social/economic prospects, which extended into adulthood. Sexual decision making was based on immediate needs for protection, food or shelter; concerns about acquiring HIV were considered only after meeting those immediate needs. Future HIV prevention strategies must take seriously the socio-structural factors that influence HIV risk behaviours among young men who have sex with men in Jamaica.

Transactional sex, condomless anal sex, and HIV risk among men who have sex with men

To understand the HIV epidemic among men who have sex with men who engage in transactional sex (MSM-TS) in Paris, France, we sought to examine the association between engagement in transactional sex and HIV risk behaviors among MSM in Paris, France. Users of a geosocial-networking application in Paris were provided an anonymous web-based survey ( N = 580), which included questions about transactional sex and behavioral risk factors for HIV along with sexually transmitted infection (STI)/HIV status. Multivariate analyses showed that engagement in transactional sex was associated with condomless receptive and insertive anal intercourse (adjusted relative risk [aRR] = 1.34, 95% confidence interval [CI] = 1.04–1.72 and aRR = 1.41, 95% CI = 1.04–1.91, respectively). MSM-TS were more likely to have engaged in substance use before or during sex (aRR = 1.35, 95% CI = 1.13–1.62), to have participated in group sex (aRR = 1.37, CI = 1.13–1.62), and to have had an STI during the last year (aRR = 1.68, 95% CI = 1.16–2.45). Transactional sex was not associated with HIV status. MSM-TS in Paris engaged in higher HIV risk behaviors, however, did not have higher rates of HIV infection. Sexual health interventions should continue to target MSM-TS; however, future studies should characterize the social, cultural, and structural factors that interact with individual behaviors to elevate HIV risk for MSM-TS.

Transactional Sex and Preferences for Pre-Exposure Prophylaxis (PrEP) Administration Modalities Among Men Who Have Sex With Men (MSM)

Pre-exposure prophylaxis (PrEP) is an important biomedical human immunodeficiency virus (HIV) prevention tool gaining more popularity among Parisian men who have sex with men (MSM) who engage in transactional sex. This study examines the knowledge of, and willingness to use, different modalities of PrEP among this subgroup. Broadcast advertisements were placed on a geosocial-networking smartphone application with a link to a Web-based survey during three 24-hour periods in October 2016. Modified Poisson regression models were used to assess the association between engagement in transactional sex and preferences for each of these PrEP modalities. A total of 444 respondents were included. About 14% reported engagement in transactional sex. In all, 90% of MSM who engaged in transactional sex were knowledgeable of daily oral PrEP, while 13.3% were knowledgeable about long-acting injectable PrEP or penile or rectal microbicides. They were more likely to be aware of long-acting injectable PrEP (aRR = 2.52, 95% CI = 1.16 to 5.47) and willing to use daily oral PrEP (aRR = 1.48; 95% CI = 1.11 to 1.98) or long-acting injectable PrEP (aRR = 1.40; 95% CI = 1.09 to 1.81) than MSM who had not engaged in transactional sex. Long-acting injectable PrEP may be an important HIV-prevention option for MSM who engage in transactional sex if this modality is proven effective.

Male clients of male sex workers in West Africa: A neglected high-risk population

Research on male clients of male sex workers (MCMSW) has been neglected for a long time globally. We aimed to characterize MCMSW and to identify factors associated with their sexual practices using data from the prospective cohort study CohMSM conducted in Burkina Faso, Côte d'Ivoire, Mali and Togo. Our study focused on HIV-negative men who have sex with other men (MSM), recruited between 06/2015 and 01/2018 by a team of trained peer educators. Scheduled study visits at 6, 12 and 18 months included medical examinations, HIV screening, risk-reduction counselling and face-to-face interviews to collect information on their sociodemographic characteristics, sexual behaviours, and HIV risk-reduction strategies (HIV-RRS). Three stigmatization sub-scores were constructed (experienced, perceived and internalized). Mixed-effects logistic regression was used for data analysis. Of the 280 participants recruited at baseline, 238, 211 and 118, respectively, had a follow-up visit at 6, 12 and 18 months. Over a total of 847 visits, 47 transactional sex (TS) encounters were reported by 38 MCMSW (13.6%). Of the latter, only one participant reported systematic TS (2.6%), 18 (47.4%) stopped reporting TS after baseline, while 6 (15.8%) reported TS after baseline. Thirteen participants (34.2%) reported occasional TS. After adjusting for country of study and age, the following self-reported factors were associated with a greater likelihood of being MCMSW: protected anal sex, exclusively insertive anal sex with male sexual partners, avoidance of sex after consuming psychoactive products and experiencing stigmatization (all during the previous 6 months). The majority of MCMSW in this study practiced HIV-RRS with male sexual partners, including engaging in protected anal sex, avoidance of sex when consuming psychoactive products, and practising exclusively insertive anal sex.

Applying resilience theory models to contextualize economic-dependent partnerships as a risk factor for HIV among young men who have sex with men

Economic-dependent partnerships (EDP) are an understudied HIV risk correlate among young men who have sex with men (YMSM) in the U.S. We explored whether YMSM's psychological resilience buffered against the effect of socioeconomic disadvantage on EDPs, after accounting for other psychosocial risks. Data come from an observational study assessing YMSM's HIV vulnerabilities. We developed indices for socioeconomic disadvantage, psychosocial profiles, and cumulative promotive factors. Multivariable logistic regressions tested the main associations of these indices on EDPs. Protective models tested whether psychosocial profiles exacerbated and cumulative promotive factors buffered the effects of socioeconomic disadvantage on EDPs. 31% and 23% of YMSM reported EDPs with main and casual partners, respectively. For both outcomes, we found support for adjusted compensatory models. Socioeconomic disadvantage was associated with increased odds of EDPs with main (AOR = 1.45, p < .001) and casual (AOR = 1.47, p < .001) partners. Psychosocial profiles were also associated with increased odds of EDPs with main (AOR = 1.53, p = .001) and casual (AOR = 1.67, p < .001) partners. Cumulative promotive factors was associated with decreased odds of EDPs with main (AOR = 0.66, p = .003) and casual (AOR = 0.72, p = .035) partners. Our findings elucidate the need for multilevel interventions that provide opportunities for socioeconomic advancement and improve psychosocial/psychological functioning for at-risk YMSM.

Selling and buying sex in the city: men who have sex with men in the Bangkok men who have sex with men Cohort Study

We describe participants in the Bangkok Men who have sex with men Cohort Study (BMCS) who sold or bought sex. Men who have sex with men (MSM) and transgender women aged ≥18 years had HIV testing and behavioral data collected at enrollment and every four months. We evaluated report of receiving money or goods for sex (selling sex) or giving money or goods for sex (buying sex) at enrollment using logistic regression models; we also describe sex work over time, and HIV and syphilis incidence among those who report sex work. At enrollment, 511 (29.3%) of 1744 participants reported buying or selling sex. Factors associated with selling sex were young age, lower education, living alone or living with a friend, being unemployed, higher HIV knowledge, binge drinking and club drug use, a higher number of casual male partners, meeting sex partners at specific venues, having a foreign sex partner, and being HSV-1 seropositive. MSM aged 18-21 years who sold sex had an HIV incidence of 11.1 per 100 person-years (95% CI: 6.7-17.4). Almost one-third of participants from BMCS reported sex work at enrollment. Young men who sold sex had high HIV incidence and HIV prevention interventions are needed for this at-risk population in Bangkok, Thailand.

Social-ecological factors associated with selling sex among men who have sex with men in Jamaica: results from a cross-sectional tablet-based survey

BACKGROUND

Globally, men who have sex with men (MSM) experience social marginalization and criminalization that increase HIV vulnerability by constraining access to HIV prevention and care. People who sell sex also experience criminalization, rights violations, and violence, which elevate HIV exposure. MSM who sell sex may experience intersectional stigma and intensified social marginalization, yet have largely been overlooked in epidemiological and social HIV research. In Jamaica, where same sex practices and sex work are criminalized, scant research has investigated sex selling among MSM, including associations with HIV vulnerability.

OBJECTIVE

We aimed to examine social ecological factors associated with selling sex among MSM in Jamaica, including exchanging sex for money, shelter, food, transportation, or drugs/alcohol (past 12 months).

METHODS

We conducted a cross-sectional survey with a peer-driven sample of MSM in Kingston, Ocho Rios, and Montego Bay. Multivariable logistic regression analyses were conducted to estimate intrapersonal/individual, interpersonal/social, and structural factors associated with selling sex.

RESULTS

Among 556 MSM, one-third (n = 182; 32.7%) reported selling sex. In the final multivariable model, correlates of selling sex included: individual/intrapersonal (lower safer sex self-efficacy [AOR: 0.85, 95% CI: 0.77, 0.94]), interpersonal/social (concurrent partnerships [AOR: 5.52, 95% CI: 1.56, 19.53], a higher need for social support [AOR: 1.08, 95% CI: 1.03, 1.12], lifetime forced sex [AOR: 2.74, 95% 1.65, 4.55]) and structural-level factors (sexual stigma [AOR: 1.09, 95% CI: 1.04, 1.15], food insecurity [AOR: 2.38, 95% CI: 1.41, 4.02], housing insecurity [AOR: 1.94, 95% CI: 1.16, 3.26], no regular healthcare provider [AOR: 2.72, 95% CI: 1.60, 4.64]).

CONCLUSIONS

This study highlights social ecological correlates of selling sex among MSM in Jamaica, in particular elevated stigma and economic insecurity. Findings suggest that MSM in Jamaica who sell sex experience intensified social and structural HIV vulnerabilities that should be addressed in multi-level interventions to promote health and human rights.

The Association between Incarceration and Transactional Sex among HIV-infected Young Men Who Have Sex with Men in the United States

Criminal justice practices in the USA disproportionately affect sexual and racial/ethnic minority men, who are at higher risk of incarceration. Previous research demonstrates associations between incarceration and sexual risk behaviors for men who have sex with men (MSM). However, little of this work focuses on young MSM (YMSM), particularly HIV-infected YMSM, despite nearly one-third reporting engagement in sexual risk behaviors, such as transactional sex. We therefore explored the association between incarceration and transactional sex among HIV-infected YMSM. We recruited 97 HIV-infected YMSM across 14 clinical sites in urban centers from August 2015 to February 2016. We used multivariate logistic regression to examine the relationship between incarceration and transactional sex among YMSM. The majority was 24 years old (78%) and racial/ethnic minority (95%); over half were not in school and reported an annual income of < $12,000. In the multivariate model, having ever been incarcerated (aOR = 3.20; 95% CI 1.07-9.63) was independently associated with a history of transactional sex. Being 24 years vs. younger (aOR = 9.68; 95% CI 1.42-65.78) and having ever been homeless (aOR = 3.71, 95% CI 1.18-11.65) also remained independently associated with a history of transactional sex. This analysis fills a gap in the literature by examining the relationship between incarceration and transactional sex among HIV-infected YMSM. Facilitating youths' engagement with social services available in their HIV clinic may serve as a key strategy in promoting health. Public health efforts need to address social-structural factors driving disproportionate rates of arrest and incarceration and related harms among this population.

Inter-partner and Temporal Variations in the Perception of Sexual Risk for HIV

This study uses longitudinal qualitative methods to examine how gay and bisexual men perceive sexual risk across both a variety of partners and across time. Over ten weeks, participants completed three quantitative personal relationship diaries (PRD) describing sexual encounters during that time period. Participants then completed a timeline-based individual in-depth interview to unpack the PRD data. Participants used multiple factors to determine their own sexual risk (e.g., type of sex, partner concurrency, emotional connections), which often resulted in inconsistencies in defining sexual risk and determining the level of risk both within and across partners and across time. These findings can inform HIV prevention messages and programming.

Associations Between Major Depressive Episode, Methamphetamine Use Disorder Severity, and Engagement in Sexual Risk-Taking Among Methamphetamine-Using Men Who Have Sex with Men

Depression and methamphetamine use have been associated with increased sexual risk-taking among men who have sex with men (MSM). This study estimated associations between current major depressive episode and/or methamphetamine use disorder and engagement in condomless anal intercourse (CAI). From March 2014 thru January 2016, 286 methamphetamine-using MSM were enrolled into a RCT to reduce methamphetamine use and sexual risk-taking. Analyses revealed that current major depressive episode was associated with a 92% increase in the rate of engagement in CAI with casual male partners (IRR 1.92; 95% CI 1.12-3.31) and a 76% increase in the rate of engagement in CAI with anonymous male partners (IRR 1.76; 95% CI 1.00-3.09). Additionally, for each unit increase in diagnostic methamphetamine use disorder severity, rates of engagement in CAI with anonymous male partners increased by 44% (IRR 1.44; 95% CI 1.11-1.87) and rates of engagement in CAI with exchange male partners increased by 140% (IRR 2.40; 95% CI 1.39-4.13). Neither diagnosis was associated with CAI with main male partners. Depression and methamphetamine use influence sexual risk-taking in unique ways, and interventions working with MSM should assess participants for both depression and methamphetamine use, and may tailor intervention content based on diagnostic outcomes.

Predictors of HIV Testing and Their Influence on PrEP Acceptance in Men Who Have Sex with Men: A Cross-Sectional Study

HIV testing is the gateway to biomedical means of prevention and treatment. Identifying predictors of HIV testing is important to inform future preventive interventions. Of 444 men who have sex with men without known HIV infection enrolled in a study in Hong Kong, 64% had ever been HIV-tested. Testers were generally older, better educated, had a higher monthly income, and more likely self-identified as gay. Testers often used Internet and frequented saunas for sex networking, compared with non-testers attending bars, massage centres and public toilets. HIV testing habit also varied with the profile of body image type and preferred type in sex networking. Higher acceptance of pre-exposure prophylaxis (PrEP) was observed among testers. Overall, socioeconomic status played an important role in both HIV testing and access to PrEP. Interventions targeting sex networking venues and alternative means of testing provision are needed to increase coverage of HIV testing.