Prospective Effects of a Syndemic on HIV and STI Incidence and Risk Behaviors in a Cohort of Young Men Who Have Sex with Men

Psychosocial Syndemic Burden, Sexual Behaviors, and Engagement in HIV Prevention Care Among Sexual and Gender Minority Youths: United States, 2022

Objectives. To examine linear and nonlinear associations between psychosocial syndemic factors and HIV risk and engagement in HIV prevention care among sexual and gender minority (SGM) youths. Methods. Between February and October 2022, we recruited 17 578 SGM youths aged 13 to 18 years in the United States for an online survey. We examined the relationship of syndemics (i.e., binge drinking, drug use, sexual victimization, and anti-lesbian, gay, bisexual, and transgender discrimination) with sexual behaviors (i.e., sexual initiation, condomless anal or vaginal sex, and number of sexual partners) and HIV prevention care (i.e., HIV testing, preexposure prophylaxis awareness and utilization) using regression. Results. Psychosocial syndemic burden (number of syndemic factors reported) was linearly and cubically associated with engagement in sexual behaviors. Psychosocial syndemic burden was linearly associated with higher HIV testing and preexposure prophylaxis awareness and cubically associated with higher preexposure prophylaxis utilization. Conclusions. Our findings are evidence of synergism across psychosocial syndemic factors regarding HIV risk and engagement in HIV prevention care among SGM youths in the United States. Public Health Implications. Multicomponent interventions may help reduce HIV risk and promote access to HIV prevention services among SGM individuals aged 13 to 18 years. (Am J Public Health. 2024;114(9):892-902. https://doi.org/10.2105/AJPH.2024.307753).

Factors associated with antiretroviral treatment adherence among people living with HIV in Guangdong Province, China: a cross sectional analysis

BACKGROUND

Understanding factors associated with antiretroviral treatment (ART) adherence is crucial for ART success among people living with HIV (PLHIV) in the "test and treat" era. Multiple psychosocial factors tend to coexist and have a syndemic effect on ART adherence. We aimed to explore factors associated with ART adherence and the syndemic effect of multiple psychosocial factors on ART adherence among PLHIV newly starting ART in Guangdong Province, China.

METHODS

Newly diagnosed PLHIV from six cities in Guangdong Province were recruited between May 2018 and June 2019, and then followed up from May 2019 to August 2020. Baseline and follow-up data were collected from a questionnaire and the national HIV surveillance system, the follow-up data of which were analyzed in this study. A Center for Adherence Support Evaluation (CASE) index > 10 points was defined as optimal ART adherence, which was measured via participants' self-reported adherence during follow-up survey. Multivariable logistic regression was used to identify factors associated with ART adherence. Exploratory factor analysis (EFA) and multi-order latent variable structural equation modeling (SEM) were performed to explore the syndemic effect of multiple psychosocial factors on ART adherence.

RESULTS

A total of 734 (68.53%) follow-up participants were finally included in this study among the 1071 baseline participants, of whom 91.28% (670/734) had self-reported optimal ART adherence. Unemployment (aOR = 1.75, 95%CI: 1.01-3.02), no medication reminder (aOR = 2.28, 95%CI: 1.09-4.74), low medication self-efficacy (aOR = 2.28, 95%CI: 1.27-4.10), low social cohesion (aOR = 1.82, 95%CI: 1.03-3.19), no social participation (aOR = 5.65, 95%CI: 1.71-18.63), and ART side effects (aOR = 0.46, 95%CI: 0.26-0.81) were barriers to optimal ART adherence. The EFA and second-order latent variable SEM showed a linear relationship (standardized coefficient = 0.43, P < 0.001) between ART adherence and the latent psychosocial (syndemic) factor, which consisted of the three latent factors of medication beliefs and self-efficacy (standardized coefficient = 0.65, P < 0.001), supportive environment (standardized coefficient = 0.50, P < 0.001), and negative emotions (standardized coefficient=-0.38, P < 0.01). The latent factors of medication beliefs and self-efficacy, supportive environment, and negative emotions explained 42.3%, 25.3%, and 14.1% of the variance in the latent psychosocial factor, respectively.

CONCLUSIONS

About nine out of ten PLHIV on ART in Guangdong Province self-reported optimal ART adherence. However, more efforts should be made to address barriers to optimal ART adherence.

Intersectional stigma and the non-communicable disease syndemic in the context of HIV: protocol for a multisite, observational study in the USA

INTRODUCTION

The increasing burden of non-communicable diseases, such as hypertension, diabetes and dyslipidaemia, presents key challenges to achieving optimal HIV care outcomes among ageing people living with HIV. These diseases are often comorbid and are exacerbated by psychosocial and structural inequities. This interaction among multiple health conditions and social factors is referred to as a syndemic. In the USA, there are substantial disparities by social position (ie, racial, ethnic and socioeconomic status) in the prevalence and/or control of non-communicable diseases and HIV. Intersecting stigmas, such as racism, classism and homophobia, may drive these health disparities by contributing to healthcare avoidance and by contributing to a psychosocial syndemic (stress, depression, violence victimisation and substance use), reducing success along the HIV and non-communicable disease continua of care. Our hypothesis is that marginalised populations experience disparities in non-communicable disease incidence, prevalence and control, mediated by intersectional stigma and the psychosocial syndemic.

METHODS AND ANALYSIS

Collecting data over a 4 year period, we will recruit sexual minority men (planned n=1800) enrolled in the MACS/WIHS Combined Cohort Study, a long-standing mixed-serostatus observational cohort in the USA, to investigate the following specific aims: (1) assess relationships between social position, intersectional stigma and the psychosocial syndemic among middle-aged and ageing sexual minority men, (2) assess relationships between social position and non-communicable disease incidence and prevalence and (3) assess relationships between social position and HIV and non-communicable disease continua of care outcomes, mediated by intersectional stigma and the psychosocial syndemic. Analyses will be conducted using generalised structural equation models using a cross-lagged panel model design.

ETHICS AND DISSEMINATION

This protocol is approved as a single-IRB study (Advarra Institutional Review Board: Protocol 00068335). We will disseminate results via peer-reviewed academic journals, scientific conferences, a dedicated website, site community advisory boards and forums hosted at participating sites.

Findings From the Step Up, Test Up Study of an Electronic Screening and Brief Intervention for Alcohol Misuse in Adolescents and Young Adults Presenting for HIV Testing: Randomized Controlled Efficacy Trial

BACKGROUND

Substance use, particularly binge drinking of alcohol and noninjection substance use, is associated with increased risk for HIV infection among youth, but structured substance use screening and brief intervention are not often provided as part of HIV risk reduction.

OBJECTIVE

The purpose of the study was to test the efficacy of a fully automated electronic screening and brief intervention, called Step Up, Test Up, to reduce alcohol misuse among adolescents and young adults presenting for HIV testing. Secondary objectives were reduction in sexual risk and uptake of pre-exposure prophylaxis (PrEP) for HIV prevention.

METHODS

Youth aged 16 years to 25 years who presented for HIV testing at community-based locations were recruited for study participation. Those who screened at moderate to high risk on the Alcohol Use Disorders Identification Test were randomized (1:1) to either an electronic brief intervention or a time-attention control. The primary outcome was change in alcohol use at 1, 3, 6, and 12-month follow-ups. Negative binomial and log binomial regression analyses with generalized estimating equations were conducted to evaluate the intervention efficacy.

RESULTS

Among a sample of 329 youth, there were no significant differences in alcohol use outcomes between conditions over time or at the 1, 3, 6, or 12-month time points. In terms of secondary outcomes, there was evidence of reduction in condomless insertive anal sex under the influence of alcohol and drugs at 12 months compared with 3 months in the intervention versus the attention control condition (incidence rate ratio=0.15, 95% CI 0.05-0.44); however, there were no other significant differences in sexual risk and no difference in PrEP engagement.

CONCLUSIONS

We found no effect of electronic brief intervention to reduce alcohol use and some effect on sexual risk among youth aged 16 years to 25 years who present for HIV testing.

TRIAL REGISTRATION

ClinicalTrials.gov number NCT02703116; https://clinicaltrials.gov/ct2/show/NCT02703116.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

RR2-10.1186/s12889-020-8154-6.

Syndemic Profiles for HIV, Hepatitis C, and Sextually Transmitted Infections Among Mexican American Women Formerly Affiliated with Youth Street Gangs

We examine syndemic profiles of intimate partner violence, mental health, drug use, incarceration, and infectious diseases (HIV, HCV, and STIs) among a sample of adult Mexican American women who were affiliated with youth street gangs during adolescence through their relationships to boys and men. Latent class analysis included multiple factors along the following dimensions: intimate partner violence, drug use, mental illness, and incarceration. Five unique syndemic profiles were found with varying associations to HIV, HCV, and STI: (1) no syndemic, (2) intimate partner violence, no syndemic, (3) drug use, mental health, and incarceration syndemic, (4) intimate partner violence, drug use (without injection drug use), and mental health syndemic, and (5) intimate partner violence, drug use with injection drug use, mental health, and incarceration syndemic. To successfully prevent HIV, HCV, and STI among gang-involved girls and women, it is necessary to address syndemic factors.

Factors Associated with Unprotected Anal Sex among Men Who Have Sex with Men in Mexico

The global prevalence of HIV is notably higher in men who have sex with men (MSM) compared with other male populations. Unprotected anal intercourse is the riskiest sexual behavior for HIV acquisition and/or transmission among this minority population. The purpose of the study was to identify if the syndemic of psychosocial stressors and experienced stigma are predictors of unprotected anal sex in Mexican MSM. A cross-sectional analytic study was carried out. It included adults residing in Manzanillo, Mexico, with oral/anal sex practices within the last year. Informed consent was given by 142 participants selected using snowball sampling. Collected data included sociodemographic characteristics, psychosocial stressors, experienced stigma, HIV knowledge, knowing a friend/acquaintance living with HIV/AIDS, and sexual risk behaviors. Adjusted logistic regression was used to identify predictors of unprotected anal sex within the last six months. Presence of syndemic of psychosocial stressors, drug use during sex, having friends/acquaintances with HIV/AIDS, and experiencing high stigma were positively associated; high level of HIV knowledge was negatively linked. Reducing psychosocial stressors and integrating stigma-mitigation strategies are key elements to reduce HIV transmission.

Mapping the current knowledge in syndemic research applied to men who have sex with men: A scoping review

Men who have sex with Men (MSM) represent a population affected by numerous health conditions. Syndemic theory has been used as a framework to study the health of MSM for nearly 20 years. However, the literature is plagued by a lack of consensus regarding what constitutes a synergy in a syndemic and recent reviews have shown that most of the papers published thus far have failed to demonstrate a synergy nor describe the bio-social interaction needed to account for a true syndemic. Moreover, to our knowledge, none of the existing reviews have focused specifically on MSM. This scoping review aims to fill this gap by mapping in detail how syndemic research on MSM has been conducted. A systematic database search was conducted between 2020 and 2021 and 115 studies were included. Our findings showed a lack of diversity regarding the location, design, subpopulation, and outcomes studied. In addition, the syndemic conditions, as well as their measurement, were not focused enough to ensure the robustness and reproducibility of the findings. Furthermore, our results support previous reviews showing a lack of empirical data to support disease interaction in syndemic research applied to MSM. Our review offers some important recommendations to help move the field forward in future work and describes some promising methodological advances.

Three-site screening for STIs in men who have sex with men using online self-testing in an English sexual health service

OBJECTIVES

Among men who have sex with men (MSM) in the UK,Chlamydia trachomatis (CT) and Neisseria gonorrhoea (NG) infections commonly occur asymptomatically at extragenital sites. Therefore, MSM seeking sexual health services are offered three-site (oropharyngeal, rectal and urogenital) STI screening. To increase access to screening, some UK sexual health services enable asymptomatic service users to order free STI screening kits online for self-sampling at home. We sought to assess prevalence of overall and extragenital CT/NG infection among asymptomatic MSM who used online self-testing in Hampshire, UK.

METHODS

We assessed prevalence of CT/NG infections from non-pooled samples among asymptomatic cisgender MSM using an administrative database with results from 5601 STI screening kits returned between 20 December 2016 and 31 January 2020. We compared number of diagnoses of extragenital infection with urogenital results of the same individuals to determine prevalence of infection that would have been missed with urine testing alone.

RESULTS

Among 5051 valid CT and 5040 valid NG asymptomatic test results, overall prevalence was 5.9% (298/5051) and 4.5% (228/5040), respectively. Among MSM with asymptomatic CT, 71.8% (214/298) had extragenital infection only, χ² (1, n=298)=56.71, p<0.001. Among those with asymptomatic NG, 89.9% (205/228) had extragenital infection only, χ² (1, n=228)=145.281, p<0.001.

CONCLUSIONS

Overall, most CT/NG infections among asymptomatic MSM who used online self-testing were extragenital. Given this and the likelihood of onward transmission from asymptomatic infection, it is recommended that three-site testing remain standard for MSM and free screening services be expanded in easily accessible ways.

Role of the Intersections of Gender, Race and Sexual Orientation in the Association between Substance Use Behaviors and Sexually Transmitted Infections in a National Sample of Adults with Recent Criminal Legal Involvement

Limited research has focused on how substance use and sexual risk behaviors differ among individuals impacted by the criminal legal system based on social identities. Using the National Survey on Drug Use and Health, we estimated relative risk for reporting a sexually transmitted infection (STI) among intersectional social groups with criminal legal involvement using a modified Poisson regression. We then utilized multivariate logistic regression and marginal effects to measure associations between substance use behaviors and STIs and to estimate whether these varied among the intersectional social groups with elevated STI rates. Three groups had elevated risk of reporting an STI compared to white, heterosexual men: white, heterosexual women (1.53, 95% CI: 1.05-2.20); Black, heterosexual women (2.03, 95% CI: 1.18-3.49); and white, gay or bisexual men (5.65, 95% CI: 2.61-12.20). Considering the intersections of gender, race, and sexual orientation, elevated risks for STIs among white and Black heterosexual women were mitigated after adjusting for substance use alongside other confounders. Only those who identified as white, gay or bisexual, and male had increased STI risk after controlling for substance use. Interventions targeting Black and white heterosexual women's sexual health following incarceration should focus on substance use and interventions targeting white, gay or bisexual men should focus on healthy sexual behaviors, HIV/STI screening, and care continuum efforts.

Pride-based violence, intoxicated sex and poly-drug use: a vocational school-based study of heterosexual and LGBT students in Bangkok

BACKGROUND

In Thailand, drug use is widely observed, especially among vocational-school students, who are more inclined to use various types of drugs and to experience pride-based violence (violence based on institutional pride, honor, or on seniority status) than any other groups of students. Drug use contexts differ based on sexual orientation and gender identity (e.g., clubs). This study aims to examine the prevalence and correlates of poly-drug use (the use of at least three types of drugs) among vocational-school students, with a focus on sexual orientation and gender identity.

METHODS

In this study, 638 vocational school students living in Bangkok metropolitan area participated in a three-year longitudinal survey of four vocational schools. Experiences of violence, sexual behaviours, and poly-drug use were assessed and analyzed using multivariable logistic regression.

RESULTS

About one tenth of all students (11.3%) reported poly-drug use, a fifth among Lesbian, Gay, Bisexual and Transgender (LGBT) students (20.2%) and almost a tenth of heterosexual students (9.8%). In the multivariable logistic model of LGBT students, GPA, pride-based violence, intoxicated sex, and counseling needs were significantly associated with poly-drug use (AOR = 4.62; 95% CI 1.17-18.29, AOR = 6.01; 95% CI 1.31-27.32, AOR = 5.17; 95% CI 1.10-24.28, AOR = 4.64; 95% CI 1.16-18.54, respectively). Likewise, among heterosexual students, GPA and intoxicated sex were significantly associated with poly-drug use (AOR = 2.02; 95% CI 1.09-3.75, AOR = 5.31; 95% CI 2.81-10.04, respectively).

CONCLUSIONS

LGBT vocational-school students have significantly higher prevalence of poly-drug use than their heterosexual peers. Correlates include lower GPA, having experienced pride-based violence and intoxicated sex. School-based intervention programs should also address pride-based violence and intoxicated sex in their harm reduction programs.

The Impact of Closeness to Non-Parental Adults in Social Networks on Substance Use among Young Men Who Have Sex with Men

Non-parental adults (NPAs), or adults in social networks other than parents and romantic/sexual partnersare an under-examined potential resource in the lives of young men who have sex with men (YMSM). Using survey and social network data from a sample (n = 169) of ethnically diverse YMSM in a Midwestern city, this article examines longitudinal associations between emotional closeness to NPAs and subsequent substance use among YMSM. After controlling for race/ethnicity, closer relationships with NPAs were associated with a lower likelihood of binge-drinking and marijuana use six months later. In an exploratory set of analyses, the level of connectedness between NPAs and other members of social networks was not associated with substance use. Future studies should continue to examine the protective role of NPAs for both substance use and other health behaviors among YMSM.

Syndemic Health Disparities and Sexually Transmitted Infection Burden Among Black Men Who Have Sex with Men Engaged in Sex Work in the U.S

Black men who have sex with men (MSM) engaged in sex work (BMSM-SW) experience elevated HIV and sexually transmitted infection (STI) prevalence. Further, BMSM-SW have been shown to have higher rates of syndemic psychosocial health conditions which contribute to HIV risk behavior and incidence, and poorer care outcomes than other groups of men who have sex with men. However, syndemic perspectives have not been applied to understanding past-year STI burden among BMSM-SW in the U.S. Sexually active Black MSM ≥ 18 years old were recruited from Black Pride events in six U.S. cities (n = 4421) between 2014 and 2017. Multivariable logistic regressions assessed correlates of past-year sex work engagement; whether BMSM-SW had higher odds of syndemic conditions; and whether BMSM-SW had higher odds of self-reported, past-year STI diagnoses. Structural equation models assessed relationships between sex work engagement, syndemic conditions, and STI controlled for sociodemographics and number of sexual partners. A total of 254 (5.7%) Black MSM reported past-year sex work, of whom 45.3% were HIV positive. BMSM-SW were significantly more likely to be Hispanic, to report past-year bisexual behavior, and to report annual income < $10,000. In multivariable models, BMSM-SW were significantly more likely to report intimate partner violence, assault victimization, polydrug use, and depression symptoms; they were also more likely to report past-year gonorrhea, chlamydia, and syphilis. Syndemic conditions mediated the relationship between past-year sex work and past-year STI burden, constituting a significant indirect effect. BMSM-SW in the U.S. face severe biopsychosocial health disparities. Interventions developed for BMSM engaged in sex work are lacking. Our results suggest that interventions containing safer sex work education and sex-positive biobehavioral HIV/STI prevention alongside substance use, mental health, employment, and education components will be most effective.

Victimization, Substance Use, Depression, and Sexual Risk in Adolescent Males Who Have Sex with Males: A Syndemic Latent Profile Analysis

Adolescent males who have sex with males (AMSM) are at increased risk of HIV/STI acquisition compared to other adolescents, making sexual risk behaviors in this population a priority public health focus. AMSM experience more victimization (including sexual/partner violence), depression, and substance abuse than their heterosexual counterparts; these may form a syndemic associated with risky sexual behavior. We pooled data from the 2015 and 2017 Youth Risk Behavior Survey, restricted to male students who reported a previous male sexual partner (n = 448). Latent profile analysis was used to identify syndemic profiles, with log-binomial and cumulative complementary log-log models used to test associations with substance use at last intercourse, condomless sex at last intercourse, and the number of sexual partners. Nearly all measures of victimization, depression, and substance use had bivariate associations with greater substance use during sex and more sexual partners. We identified three profiles of AMSM: The profile (n = 55) with the greatest risk factors (evident of a syndemic) had substantially higher prevalence of substance use during sex (aPR = 4.74, 95% CI 3.02, 7.43) and more sexual partners (aPR = 2.45, 95% CI 1.39, 4.31) than the profile with the lowest risk factors (n = 326) after adjusting for confounders. This profile was not associated with condomless sex. We identified a syndemic characterized by victimization, depression, and substance use associated with risky sexual behaviors in a nationally representative sample of AMSM. Comprehensive sexual risk reduction interventions incorporating mental health and substance use are critically important in this population.

Strengthening resilience to reduce HIV risk in Indian MSM: a multicity, randomised, clinical efficacy trial

BACKGROUND

Men who have sex with men (MSM) in India are extremely marginalised and stigmatised, and therefore experience immense psychosocial stress. As current HIV prevention interventions in India do not address mental health or resilience to these stressors, we aimed to evaluate a resilience-based psychosocial intervention in the context of HIV and sexually transmitted infection (STI) prevention.

METHODS

We did a multicity, randomised, clinical efficacy trial in Chennai (governmental tuberculosis research institute) and Mumbai (non-governmental organisation for MSM), India. Inclusion criteria were MSM, aged 18 years or older, who were at risk of HIV acquisition or transmission, defined as having any of the following in the 4 months before screening: anal sex with four or more male partners (protected or unprotected), diagnosis of an STI, history of transactional sex activity, or condomless anal sex with a man who was of unknown HIV status or serodiscordant. Participants were required to speak English, Tamil (in Chennai), or Hindi (in Mumbai) fluently. Eligible individuals were randomly assigned (1:1) to either a resilience-based psychosocial HIV prevention intervention, consisting of group (four sessions) and individual (six sessions) counselling alongside HIV and STI voluntary counselling and testing, or a standard-of-care control comprising voluntary counselling and testing alone. The primary outcomes were number of condomless anal sex acts with male partners during the past month (at baseline and 4 months, 8 months, and 12 months after randomisation), and incident bacterial STIs (at 12 months after randomisation). Resilience-related mediators included self-esteem, self-acceptance, and depression. Recruitment is now closed. This trial is registered with ClinicalTrials.gov, NCT02556294.

FINDINGS

Between Sept 4, 2015, and June 28, 2018, we enrolled 608 participants; 305 (50%) were assigned to the psychosocial intervention condition and 303 (50%) were assigned to the control condition. 510 (84%) of 608 men completed an assessment at 4 months after randomisation, 483 (79%) at 8 months, and 515 (85%) at 12 months. 512 (99%) of 515 men had STI data from the 12-month assessment. The intervention condition had a 56% larger reduction in condomless anal sex acts (95% CI 35-71; p<0·0001) from baseline to 4-month follow-up, 72% larger reduction (56-82; p<0·0001) from baseline to 8-month follow-up, and 72% larger reduction (53-83; p<0·0001) from baseline to 12-month follow-up, compared with the standard-of-care control condition (condition by time interaction; χ2=40·29, 3 df; p<0·0001). Improvements in self-esteem and depressive symptoms both mediated 9% of the intervention effect on condomless anal sex acts. Bacterial STI incidence did not differ between study conditions at 12-month follow-up.

INTERPRETATION

A resilience-based psychosocial intervention for MSM at risk of HIV acquisition or transmission in India was efficacious in reducing condomless anal sex acts, with evidence for mediation effects in two key target resilience variables. HIV prevention programmes for MSM in India should address mental health resilience to augment reductions in the risk of sexually transmitted HIV.

FUNDING

National Institute of Mental Health.

Staying or moving: Results of a latent transition analysis examining intra-individual stability of recreational substance use among MSM in the Multicenter AIDS Cohort Study from 2004 to 2016

BACKGROUND

Studies have examined patterns of substance use among Men who have Sex with Men (MSM), but few have examined factors predicting transitioning from one substance use pattern to another. We investigated transitioning from one substance use pattern to another over a 12-year period (2004-2016) among the Multicenter AIDS Cohort Study participants.

METHOD

Alcohol, marijuana, heroin, cocaine, poppers, uppers (e.g., methamphetamines) and erectile dysfunction(ED) medications use in the last 6 months from 3568 US MSM was dichotomized (no/yes) to classify participants into substance use classes at each follow up visit. We fit latent transition models to calculate transition probabilities of moving from one substance use class to another over a 3, 4 and 6-year time period. Then fit regression models to identify factors associated with the probability of each participant staying in or moving from the same substance use class.

RESULTS

Overall, cocaine and ED medication use declined but marijuana and heroin use increased over 2004-2016. We observed most participants (84.6 %-100 %) stayed in the same class. Increased age was associated with transition from the Minimal-use class to the Alcohol-only class (aOR = 1.06,95 %CI:1.01-1.13;p < 0.01) and non-White MSM reported lower odds of moving from the Alcohol-only class to the Alcohol-Popper class (aOR = 0.50,95 %CI:0.30-0.82;p <0.01). There were no difference in the transition probabilities by HIV-status.

CONCLUSION

Despite decline in substance use in general, participants are highly stable in their choice of substances. However, treating MSM as a homogeneous group can lead to an under-appreciation of the diversity of prevention needs and treatment of substance using MSM.

Conceptualizing the Effects of Continuous Traumatic Violence on HIV Continuum of Care Outcomes for Young Black Men Who Have Sex with Men in the United States

The United States (US) is on track to achieve the 90-90-90 targets set forth by UNAIDS and the National HIV/AIDS strategy, yet significant racial disparities in HIV care outcomes remain, particularly for young Black men who have sex with men (YBMSM). Research has demonstrated that various types of violence are key aspects of syndemics that contribute to disparities in HIV risk. However, little research has looked collectively at cumulative violent experiences and how those might affect HIV treatment and care outcomes. Drawing on extant literature and theoretical underpinnings of syndemics, we provide a conceptual model that highlights how continuous traumatic violence experienced by YBMSM may affect HIV outcomes and contribute to racial disparities in HIV outcomes. The findings of this focused review suggest a need for research on how continuous exposure to various types of violence influence HIV prevention and treatment outcomes for young Black MSM.

Correlates of Transactional Sex and Violent Victimization among Men Who Inject Drugs in Los Angeles and San Francisco, California

Men who inject drugs (MWID) and engage in transactional sex (i.e., receive money or drugs in exchange for sex) are vulnerable to HIV and violence. However, MWID who engage in transactional sex have been less studied than women. We examine factors associated with transactional sex among MWID in Los Angeles and San Francisco and whether transactional sex is associated with violent victimization. MWID were recruited using targeted sampling methods in 2011-2013 and completed surveys that covered demographics, drug use, HIV risk, violence, transactional sex, and other items. Multivariable logistic regression was used to (1) determine factors independently associated with transactional sex and (2) determine if transactional sex was independently associated with violence victimization in the last 6 months among MWID. An interaction term between income source and sexual identity was included in the transactional sex model. Of the 572 male PWID in the sample, 47 (8%) reported transactional sex in the past 6 months. Self-reported HIV infection was 7% for MWID who did not report transactional sex, 17% for MWID who reported transactional sex, and 24% for MWID who reported transactional sex and reported gay or bisexual identity. In multivariable analysis, transactional sex was positively associated with gay or bisexual identity (GB without illegal income adjusted odds ratio [AOR] = 5.16; 95% confidence interval [CI] = 1.86-14.27; GB with illegal income AOR = 13.55, CI = 4.57-40.13), coerced sex in the last 12 months (AOR = 11.66, CI = 1.94-70.12), and violent victimization in the last 12 months (AOR = 2.31, CI = 1.13-4.75). Transactional sex was negatively associated with heroin injection (last 30 days) (AOR = 0.37; 95% CI = 0.18-0.78). Transactional sex was independently associated with violent victimization in the last 12 months (AOR = 2.04; 95% CI = 1.00-4.14) while controlling for confounders. MWID who engaged in transactional sex are at elevated risk for HIV and multiple forms of violent victimization. Interventions focused on this at-risk subpopulation are urgently needed and should include access to substance use disorder treatment, victimization services, and harm reduction services across the HIV care continuum.

Sexual Violence and Chemsex among Substance-Using Sexual and Gender Minorities in Texas

Chemsex is the use of methamphetamine or other substances to enhance sexual experiences, and is most often associated with sexual minority men. Within the chemsex literature, questions of sexual violence emerge due, in part, to ambiguity about what constitutes consent within sexualized environments with co-occurring substance use. To understand the context in which sexual violence occurs, data from an online survey of sexual and gender minority Texans were analyzed using bivariate and logistic regression (N = 1273), and qualitative interviews with substance-using sexual minority men from a separate sample were thematically analyzed (N = 22). Among survey participants, 12.8% experienced a form of sexual violence (10.1% experienced intimate partner violence and 7.6% experienced sexual assault). When participants were categorized based on past year substance use and sex party attendance, 48.0% of participants who used drugs and attended sex parties (a proxy for chemsex) experienced sexual violence (41.6% experienced intimate partner violence and 41.0% experienced sexual assault). When variables statistically significant at the bivariate-level were entered into logistic regression models, participants in the chemsex category were 12.5 [95% CI: 6.9, 22.8] times more likely to experience sexual violence. Substance-using sexual minority men experiencing sexual violence describe situations in which consent is difficult to revoke and sexual exploitation is likely to occur. Studies which more deeply explore the relationship between sexual and relationship violence and chemsex among sexual and gender minorities are needed. Particularly, the notion of consent needs further conceptualization in the context of drug use and sex parties.

HIGHLIGHTS

Measures of recent substance use and sex party attendance were combined to create a proxy measure for chemsex, which is the use of substances to enhance sexual experiences.Substance-using sexual and gender minorities engaging in chemsex were at increased risk of sexual violence.In addition to engaging in chemsex, variables associated with an increased odds of sexual violence among sexual and gender minorities were younger age, having a non-monosexual sexual identity, and receiving a mental health diagnoses.Studies on sexual and gender minorities engaging in chemsex should be developed to further explore sexual exploitation.

Syndemic latent transition analysis in the HPTN 061 cohort: Prospective interactions between trauma, mental health, social support, and substance use

BACKGROUND

Substance use among Black sexual minority men (BSMM) is a significant public health focus of prevention interventions due to its association with sexual risk behaviors and transmission of HIV. Traumatic experiences and mental health challenges may interact to create a syndemic associated with substance use in this population; this may be moderated by social support however.

METHODS

Using a multicenter prospective cohort of 1068 BSMM, we conducted a longitudinal syndemic latent transition analysis testing whether baseline and 6-month race and sexuality-targeted violence, intimate partner violence, other traumatic experiences, depression, and internalized homophobia was associated with 12-month substance use. We also tested if social support modified this and was associated with transitions between statuses.

RESULTS

Our analysis identified four statuses: A "low-risk" status characterized by the lowest proportions of syndemic factors, and 3 "high-risk" statuses, characterized by higher proportions of syndemic factors. All three high-risk statuses were associated with higher substance use than the low-risk status, with the greatest association observed with "high-risk status C" (aRR = 4.54, 95 % CI 1.98, 10.40). Social support attenuated this association (Interaction aRR = 0.21, 95 % CI 0.05, 0.85) and was associated with lower transition rates from low to high-risk status 6 months later (Transition ratio = 0.45, 95 % CI 0.29, 0.69).

CONCLUSIONS

Our findings identified a syndemic of trauma, depression, and homophobia among BSMM associated with substance use, but attenuated by social support. Future research into the role of social support and resiliency in substance use prevention and recovery is recommended.

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.

Enhancing help-seeking behaviour among men who have sex with men at risk for sexually transmitted infections: the syn.bas.in randomised controlled trial

Objectives

Men who have sex with men (MSM) are at increased risk for STIs and mental disorders. Syndemic theory holds that psychosocial issues co-occur and interact, and thus increase sexual risk behaviour. Psychosocial issue identification, referral and management might reduce risk behaviour.

Methods

In the syndemic-based intervention study, an open-label randomised controlled trial, MSM were enrolled at the STI outpatient clinic of the Public Health Service of Amsterdam. We screened participants using validated questionnaires on the following problem domains: alcohol and substance use, sexual compulsivity, anxiety, depression, attention deficit hyperactivity disorder, alexithymia, intimate partner violence and childhood sexual abuse. Individuals were randomly assigned (1:1) to receive either tailored, face-to-face feedback and help-seeking advice on mental health screening, or no feedback and no help-seeking advice. Participants were followed trimonthly for a year. The primary outcomes were self-reported and confirmed help-seeking behaviour.

Results

We included 155 MSM: 76 in the intervention group and 79 in the control group. At inclusion, 128 participants (83.1%) scored positive in at least one problem domain. We found no significant differences in self-reported or confirmed help-seeking behaviour between the intervention and the control group: 41% vs 29% (p=0.14) and 28% vs 22% (p=0.44), respectively. There were also no differences in STI incidence and condomless anal sex acts between the two groups.

Conclusion

Screening showed high prevalence of problems related to mental health and substance use, while tailored feedback, advice and referral did not significantly increase help-seeking behaviour. Other interventions are needed to tackle the high burden of mental disorders among MSM.

Trial registration number

NCT02859935.

Connecting the dots: a comparison of network analysis and exploratory factor analysis to examine psychosocial syndemic indicators among HIV-negative sexual minority men

Syndemics, or comorbid and mutually reinforcing psychosocial problems, are associated with increased HIV risk among men who have sex with men (MSM). Although the dynamic interplay among syndemic indicators is theorized to be crucial for increasing risk of HIV acquisition, novel approaches are needed to understand how these syndemic problems interrelate. This study examined the associations between nine self-reported syndemic indicators in 194 MSM at high risk of HIV acquisition. We compared exploratory factor analyses (EFA) to a network analysis. In the present study, network analysis consisted of edges representing bidirectional partial polychoric correlations between nodes, which represent psychosocial syndemic indicators. EFA yielded a 1-factor solution including suicidal ideation (SI), injection drug use (IDU), depression, social anxiety, intimate partner violence, substance use, and sexual compulsivity, and excluded heavy drinking and childhood sexual abuse. Network analysis yielded a pattern of interconnectedness with the most central nodes being SI, IDU, substance use, and depression. Statistically significant relationships (absolute edge weights) were found between SI and depression, social anxiety, and IDU, and IDU and substance use. These results suggest that depression and substance use, especially more severe presentations of these conditions such as SI and IDU, are prominent interconnected components of the HIV syndemic among MSM at high risk for HIV acquisition. SI, IDU, substance use, and depression may indeed be prudent targets of intervention. Future research on the inclusion of these syndemic indicators in analytical models involving interaction terms may be warranted.

Effects of HIV-Related Discrimination on Psychosocial Syndemics and Sexual Risk Behavior among People Living with HIV

In the context of HIV-related stigma and discrimination, people living with HIV (PLHIV) might be vulnerable to a ‘syndemic’ of co-occurring psychosocial challenges that can affect sexual behavior. The present study examined how HIV-related discrimination contributes to co-occurring psychosocial syndemic problems and results in inconsistent condom use among PLHIV in Hong Kong. Two-hundred and ninety-one PLHIV were recruited to complete a self-report questionnaire. More than one-quarter of the sample experienced two or more psychosocial syndemic problems, and 74.1% of the participants who had sex with steady partners reported inconsistent condom use over the past three months. The results indicated that HIV-related discrimination was positively predictive of the number of psychosocial syndemic problems. HIV-related discrimination and psychosocial syndemics were associated with increased odds of inconsistent condom use with steady partners (AOR = 5.40 and AOR = 3.09 respectively). Findings from structural equation modeling showed that psychosocial syndemics mediated the effect of HIV-related discrimination on condom use consistency with steady partners. PLHIV in Hong Kong suffered from the syndemic effects of stigma, social isolation, and poor mental health, which rendered them vulnerable to condomless sex. In order to curb the rapidly increasing incidence of HIV, multi-level strategies should be adopted to concurrently address the structural inequities and psychosocial syndemics faced by PLHIV.

Drug use, depression and sexual risk behaviour: a syndemic among early pre-exposure prophylaxis (PrEP) adopters in Belgium?

Little is known about how interacting psychosocial problems may influence sexual behaviour among men having sex with men taking Pre-exposure prophylaxis (PrEP). This study assessed (1) the prevalence of depression, recreational drug-use and sexual risk behaviour; (2) changes in these psychosocial conditions over time; and (3) the interaction of drug use and depression with sexual risk behaviour. We analysed data of the Belgian Be-PrEP-ared cohort study (N = 200). We assessed depression using the PHQ-9, recreational drug use and receptive condomless anal intercourse (rCAI) with anonymous partners. Frequencies of psychosocial problems were compared at baseline, 9 and 18 months follow-up (FU). Bivariate associations between depression and drug-use behaviour, and their interaction with rCAI with anonymous sexual partners using was examined using linear regression. Receptive CAI increased from 41% at baseline to 53% at M18 (p = 0.038). At baseline, we found an interaction effect of poly-drug use and depression, potentiating rCAI with anonymous partners. Participants reporting poly-drug use associated with depression were significant more likely to report this type of sexual risk behaviour than those who did not report this association (p = 0.030). The high level of intertwined psychosocial problems call for multi-level interventions for those PrEP users experiencing a syndemic burden.

Examining a Syndemics Network Among Young Latino Men Who Have Sex with Men

BACKGROUND

Although studies consistently find that syndemic indicators are additively associated with increased HIV/STI risk behavior (e.g., condomless anal sex; CAS) among men who have sex with men (MSM), information is lacking about how syndemic indicators are associated with each other. Young Latino MSM are one of the most at-risk groups for acquiring HIV in the U.S. Understanding the associations of syndemic indicators with each other and with CAS may improve understanding of how to enhance sexual and behavioral health in this population.

METHOD

Network analysis using the graphical LASSO (glasso) algorithm was employed to explore associations between CAS and syndemic indicators among 139 young Latino MSM. Structural and psychosocial syndemic indicators were assessed via self-report. CAS was defined as the number of partners in the past 3 months with whom one engaged in CAS.

RESULTS

Results of the network analysis suggested the variables with the highest centrality were unstable housing, prison history, childhood sexual abuse, and CAS. Specific significant associations included links between CAS and alcohol use (b = 0.40), childhood sexual abuse and unstable housing (b = - 0.75), alcohol use and childhood sexual abuse (b = 0.40), and substance use and intimate partner violence (b = 0.43).

CONCLUSION

This pattern of interconnectedness demonstrates the potential for network analysis to examine nuanced interrelationships of syndemic indicators. The specific associations in this sample raise the question whether a primary focus of interventions should address the more central syndemic indicators for this population, such as alcohol use and unstable housing, and whether this would, via downstream effects, affect other aspects of behavioral health in this population.

Using Syndemics Theory to Examine HIV Sexual Risk Among Latinx Men Who Have Sex with Men in Philadelphia, PA: Findings from the National HIV Behavioral Surveillance

Latinx men who have sex with men (MSM) continue to be disproportionately impacted by HIV/AIDS. Identifying the role of multiple syndemic factors associated with sexual risk behaviors is imperative in order to develop effective prevention and treatment strategies. Cross-sectional data for this study were derived from three cycles of the Philadelphia portion of the National HIV Behavioral Surveillance System. This study explored the impact of syndemic factors - heavy drinking, exchange sex, and homophobic discrimination - on sexual HIV risk behaviors, operationalized as number of male partners, and condomless anal intercourse (CAI) with main and casual partners among Latinx MSM (n=464). Analyses took two forms: a syndemic approach, using the cumulative number of conditions as an independent variable; and a non-syndemic approach, incorporating each condition as a unique factor. In multivariable syndemic analyses, participants with two or more factors reported more male partners and more CAI casual male partners than those with none. In non-syndemic models, homophobic discrimination and exchange sex were significantly positively associated with total number of male partners, while heavy drinking was associated with more casual CAI partners. Quantitative results indicate that syndemic and non-syndemic approaches vary in their relative capacity to account for sexual risk among Latinx MSM.

Social Networks Moderate the Syndemic Effect of Psychosocial and Structural Factors on HIV Risk Among Young Black Transgender Women and Men who have Sex with Men

The interaction between the cumulative effect of psychosocial and structural factors (i.e. syndemic effect) and social networks among young Black transgender women and men who have sex with men (YBTM) remains understudied. A representative cohort of 16-29 year-old YBTM (n = 618) was assessed for syndemic factors [i.e. substance use; community violence; depression; poverty; justice system involvement (JSI)], social network characteristics, condomless anal sex (CAS), group sex (GS), and HIV-infection. The syndemic index significantly increased the odds of CAS, GS, and HIV-infection, and these effects were moderated by network characteristics. Network JSI buffered the effect on CAS, romantic network members buffered the effect on GS, and network age and proportion of family network members buffered the effect on HIV-infection. The proportion of friend network members augmented the effect on GS and HIV-infection. Future research to prevent HIV among YBTM should consider social network approaches that target both structural and psychosocial syndemic factors.

Applying an intersectional framework to understand syndemic conditions among young Black gay, bisexual, and other men who have sex with men

Syndemic theory has been useful in illuminating the co-existence and reinforcing nature of multiple health and social conditions that contribute to HIV risk. However, little research has examined syndemics among young Black gay, bisexual, and other men who have sex with men (GBM) or situated syndemics within the context of racism, homonegativity, and other intersecting social inequities. Applying an intersectional framework to syndemics can help demonstrate how social and structural inequities and oppression facing young Black GBM contribute to and reinforce syndemic health conditions. In 2018, we conducted 45 in-depth qualitative interviews with young Black GBM in Milwaukee and Cleveland. Our analyses examined how intersectional stigma contributes to syndemics and HIV disparities facing young Black GBM. Our findings demonstrate that broader systems of oppression and disadvantage facing young Black GBM contribute to syndemic conditions. Future conceptualizations and measurements of syndemics must capture these experiences to strengthen our understanding of syndemics among young Black GBM.

Mental health, social support, and HIV-related sexual risk behaviors among HIV-negative adolescent sexual minority males: three U.S. cities, 2015

We examined the association between mental health issues, social support, and HIV among adolescent sexual minority males (SMM), who are disproportionally affected by HIV. National HIV Behavioral Surveillance among Young Men Who Have Sex with Men (NHBS-YMSM) data among SMM aged 13-18 years were collected in three cities (Chicago, New York City, and Philadelphia). Separate log-linked Poisson regression models were used to estimate associations between mental health issues and social support (general and family), and 3 HIV-related sexual risk behavior outcomes: past-year condomless anal intercourse (CAI) with a male partner, past-year sex with ≥ 4 partners, and first vaginal or anal sex before age 13. Of 547 adolescent SMM, 22% reported ever attempting suicide and 10% reported past-month suicidal ideation. The majority (52%) reported depression and anxiety. Thirty-nine percent reported CAI, 29% reported ≥ 4 sex partners and 22% reported first sex before age 13. Ever attempting suicide, suicidal ideation, and depression and anxiety were associated with CAI. Separately, ever attempting suicide and lack of family support were associated with  ≥ 4 sex partners. None of the mental health or support measures were associated with having sex before age 13. General social support was not associated with any sexual risk behaviors. Mental health issues are common among adolescent SMM and associated with sexual risk behaviors. Including mental health support in comprehensive HIV prevention for adolescent SMM could potentially reduce HIV risk in this population.

High Levels of Syndemics and Their Association with Adherence, Viral Non-suppression, and Biobehavioral Transmission Risk in Miami, a U.S. City with an HIV/AIDS Epidemic

Miami is a Southeastern United States (U.S.) city with high health, mental health, and economic disparities, high ethnic/racial diversity, low resources, and the highest HIV incidence and prevalence in the country. Syndemic theory proposes that multiple, psychosocial comorbidities synergistically fuel the HIV/AIDS epidemic. People living with HIV/AIDS in Miami may be particularly affected by this due to the unique socioeconomic context. From April 2017 to October 2018, 800 persons living with HIV/AIDS in a public HIV clinic in Miami completed an interviewer-administered behavioral and chart-review cross-sectional assessment to examine the prevalence and association of number of syndemics (unstable housing, low education, depression, anxiety, binge drinking, drug use, violence, HIV-related stigma) with poor ART adherence, unsuppressed HIV viral load (≥ 200 copies/mL), and biobehavioral transmission risk (condomless sex in the context of unsuppressed viral load). Overall, the sample had high prevalence of syndemics (M = 3.8), with almost everyone (99%) endorsing at least one. Each syndemic endorsed was associated with greater odds of: less than 80% ART adherence (aOR 1.64, 95% CI 1.38, 1.98); having unsuppressed viral load (aOR 1.16, 95% CI 1.01, 1.33); and engaging in condomless sex in the context of unsuppressed viral load (1.78, 95% CI 1.30, 2.46). The complex syndemic of HIV threatens to undermine the benefits of HIV care and are important to consider in comprehensive efforts to address the disproportionate burden of HIV/AIDS in the Southern U.S. Achieving the 90-90-90 UNAIDS and the recent U.S. "ending the epidemic" targets will require efforts addressing the structural, social, and other syndemic determinants of HIV treatment and prevention.

Diversity of Psychosocial Syndemic Indicators and Associations with Sexual Behavior with Male and Female Partners Among Early Adolescent Sexual Minority Males

Purpose: Psychosocial syndemic indicators (e.g., internalizing symptoms, alcohol/substance use, and violence exposure) have been associated with increased risk for HIV among older adolescent sexual minority males and adult sexual minority men. No studies have examined these concerns among early adolescents (<16 years old). The purpose of this study was to examine syndemic indicators among early adolescent sexual minority males and their associations with sexual behavior. Methods: Sexual minority males (N = 207; ages 14-17; drawn from 40 U.S. states) completed a cross-sectional online survey. Descriptive statistics were used to document profiles of syndemic indicators. Firth logistic regressions tested the associations between count of syndemic indicators and sexual behavior with male and female partners. Results: Psychosocial syndemic indicators were highly prevalent and co-occurring, with diverse psychosocial profiles. After controlling for age, race, and ethnicity, having more syndemic indicators was significantly positively associated with condomless anal sex with male partners (adjusted odds ratio [AOR] = 1.37, 95% confidence interval [CI] 1.02-1.84) and vaginal and/or anal sex with females (AOR = 1.75, 95% CI 1.25-2.47). Conclusions: This study documents the psychosocial profiles of syndemic indicators with a sample of early adolescent sexual minority males and the association of syndemic indicators with sexual behavior. Among early adolescent sexual minority males, psychosocial concerns were prevalent, similar to rates seen among adult sexual minority males, and conferred vulnerability to HIV transmission. Behavioral and psychosocial interventions must reach sexual minority males in early adolescence to address mental health and substance use concerns and to help reduce the risk of HIV acquisition.

Longitudinal Effects of Syndemics on HIV-Positive Sexual Minority Men's Sexual Health Behaviors

This study examined the longitudinal effects of co-occurring psychosocial concerns, or syndemics, on HIV-positive sexual minority men's likelihood of engaging in serodiscordant condomless anal sex (CAS), a health behavior with implications for personal and public health. Participants included 390 HIV-positive sexual minority men from two prior secondary prevention trials. Over the course of the 1-year data collection period (up to 5 observations per participant), participants completed self-report measures of CAS, as well as six syndemic factors: post-traumatic stress disorder, childhood sexual abuse, depression, anxiety, alcohol abuse, and polysubstance/stimulant use. We employed multilevel modeling to examine the longitudinal additive effect of syndemics on serodiscordant CAS (binary) over the 1-year period. The number of syndemic conditions was a significant predictor of CAS, with each additional syndemic associated with 1.41 greater odds of CAS (p = .0004; 95% CI [1.16, 1.70]). Both the between-person (p = .0121, 95% CI [1.07, 1.69]) and within-person (p = .01, 95% CI [1.11, 2.10]) effects of syndemics were significant predictors, showing that an increase in the number of syndemic conditions across person and time both increased odds of CAS. Interventions addressing HIV-positive sexual minority men's sexual health behaviors should address the potential impact of co-occurring psychosocial concerns that affect these behaviors. This will benefit this population's personal sexual health and reduce transmission of HIV and STIs among sexual minority men.

Exposure to community violence and substance use among Black men who have sex with men: examining the role of psychological distress and criminal justice involvement

Young Black MSM (YBMSM) are disproportionately affected by violence, criminal justice involvement, and other structural factors that also increase vulnerability to HIV. This study examined associations between exposure to community violence (ECV) and substance use, psychological distress, and criminal justice involvement (CJI) among YBMSM in Chicago, IL. Respondent driven sampling was used to recruit a sample of 618 YBMSM (aged 16-29) from the South Side of Chicago between June 2013 and July 2014. Weighted logistic regression assessed the direct effects of ECV, CJI, and psychological distress on substance use outcomes. Indirect effects were assessed via path analysis with mean and variance adjusted weighted least squares estimation and sampling weights. Over 90% reported lifetime exposure to violence, 41% had history of CJI, and substance use was common. Almost one-third reported daily or more frequent marijuana use; 17% reported substance use related problems and drug use other than marijuana. ECV was directly and positively associated with CJI, psychological distress, and problematic substance use, with significant indirect effects from ECV to⁠ problematic substance use via CJI and psychological distress. HIV prevention interventions for YBMSM should address the underlying contextual drivers of substance use and psychological distress, including violence exposure and criminal justice involvement.

A Focus on the HIV Care Continuum Through the Healthy Young Men's Cohort Study: Protocol for a Mixed-Methods Study

BACKGROUND

No group is at greater risk for acquiring HIV than young men who have sex with men (YMSM), particularly black or African American (AA) and Hispanic or Latino (L) YMSM living in inner cities, who account for the largest number of new HIV infections each year. Although pre-exposure prophylaxis (PrEP), postexposure prophylaxis (PEP), and treatment as prevention hold enormous promise for changing the course of the epidemic, AA/L-YMSM are the least likely population to be receiving primary health care and HIV prevention/care and are the least likely to be using PrEP and PEP.

OBJECTIVE

The overarching aim of the Healthy Young Men's (HYM) cohort study is to conduct longitudinal research with a cohort of AA/L-YMSM to prevent new HIV infections, reduce transmission, and reduce HIV/AIDS-related disparities by focusing on successful engagement in care. Findings from this research will be used to inform the development of new interventions designed to engage AA/L-YMSM in the HIV prevention and care continua.

METHODS

Longitudinal research (baseline and follow-up assessments every 6 months for a total of 8 waves of data collection) is ongoing with a new cohort of 450 high-risk AA/L-YMSM in Los Angeles. Participants were recruited using a venue-based and social media sampling design. In addition to self-report surveys, the study protocol includes the collection of urine to assess recent use of illicit drugs and the collection of blood and rectal/throat swabs to test for current sexually transmitted infection (STI)/HIV infection. An additional sample of blood/plasma (10 mL for 4 aliquots and 1 pellet) is also collected and stored in the HYM cohort study biorepository for future research. By design, we recruited 400 HIV-negative participants and 50 HIV-positive (HIV+) participants. This mixed-methods study design includes collection and triangulated analysis of quantitative, qualitative, and biological measures (ie, drug use, STI/HIV testing, and adherence to antiretroviral therapy among HIV+ participants) at baseline and every 6 months. The HYM cohort study will provide a platform from which new and emerging biomedical prevention strategies (eg, PrEP, rectal microbicides, and PEP) and other HIV prevention and care engagement interventions can be developed and evaluated with AA/L-YMSM.

RESULTS

To date, all participants in the HYM cohort study have been recruited and baseline assessment has been conducted.

CONCLUSIONS

The findings from this research will be used to inform the development of new and/or adaptation of existing evidence-based HIV prevention interventions and interventions designed to engage this population in the HIV prevention and care continua.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

DERR1-10.2196/10738.

Understanding HIV Risk Behaviors Among Young Men in South Africa: A Syndemic Approach

Young men in South Africa experience several adverse socio-structural and psychosocial factors that may contribute HIV risk behaviors. This study applied a syndemic framework to explore whether these syndemic factors are interconnected and work in synergy to increase HIV risk behaviors. Five syndemic factors were assessed including: binge drinking, polydrug use, depressive symptoms, violence and food insecurity on two HIV risk behaviors: multiple sex partners and transactional sex. Participants were (N = 1233) young men aged 18-29 years from a township in Cape Town, South Africa. Bivariate logistic regression analysis demonstrated that many of the syndemic factors were related to one another. Pairwise interactions (on an additive scale) among the syndemic factors revealed significant positive interactions between binge drinking and violence on greater odds of reporting multiple sex partners (aOR = 5.10, 95% CI 3.10, 8.29; p = < .001) compared to reporting neither factor. Also, food insecurity and violence (aOR = 2.89, 95% CI 1.63, 5.11; p = < .001) as well as food insecurity and polydrug use (aOR = 2.73, 95% CI 1.54, 4.84; p = < .001) were significantly associated with greater odds of transactional sex compared to reporting neither factor. Our findings highlight a synergistic relationship between some adverse socio-structural and psychosocial factors on HIV risk behaviors. HIV prevention programs that address multiple syndemic factors simultaneously may achieve greater impact on HIV risk reduction.

Childhood sexual abuse among Black men who have sex with men: A cornerstone of a syndemic?

Background

The sequelae of childhood sexual abuse (CSA) includes HIV infection, engagement in HIV risk behaviors, substance misuse, and intimate partner violence (IPV). Although Black men who have sex with men (MSM) are disproportionately infected with HIV in the U.S.—especially in urban locations such as New York City—there is limited research with larger samples of Black MSM of varied HIV status regarding the prevalence of CSA and the potential negative consequence with respect to a “syndemic,” i.e., the co-occurrence of adverse conditions such as HIVrisk, substance misuse, and IPV.

Methods

Black MSM (N = 1,002) recruited in New York City from 2009–2015 completed a screening assessment eliciting self-reported data on age, CSA, self-reported HIV status, number of male sexual partners, number of acts of condomless anal intercourse (CAI), substance misuse, and IPV. Hypothesis testing utilized logistic and linear regression models with self-reported data on CSA (independent variable) and indicators of the following syndemic factors: HIV risk, substance misuse, and IPV.

Results

More than one-fourth (28.1%) met criteria for experiencing CSA. CSA was associated with significantly greater odds of being HIV-positive (AOR = 1.5; 95% CI = 1.1–2.0); number of male sexual partners (b = 2.0, SE = 0.5, p = .002) and condomless acts of anal intercourse (b = 4.3, SE = 1.6, p = .007); odds of binge drinking (AOR = 1.5; 95% CI = 1.1–2.0) and illicit substance use (AOR = 1.5; 95% CI = 1.1–2.0); and odds of experiencing current IPV (AOR = 1.7; 95% CI = 1.2–2.3). CSA was associated with significantly greater odds of concurrently experiencing 2 or more syndemic factors (AOR = 2.0, 95% CI = 1.4–2.9, p < .001); concurrently experiencing 2 or more syndemic factors was significantly associated with having a riskier HIV status (for being HIV-positive: AOR = 1.5, 95% CI = 1.1–2.1, p = .02; for having an unknown HIV status: AOR = 3.7, 95% CI = 1.9–12.9, p = .04).

Conclusions

Among Black MSM, CSA is a prevalent problem and is a significant antecedent to HIV, substance misuse, and IPV indicators and risk. Addressing CSA may be a valuable approach to remedy the syndemic of HIV, substance misuse, and violence that has burdened MSM, especially Black MSM, in the U.S.

Latent class analysis of a syndemic of risk factors on HIV testing among black men

Syndemic methodology has been employed in several studies of HIV-related outcomes affecting Black men who have sex with men (BMSM) and rarely in Black heterosexual men. In contrast to the most common method for assessing syndemics, the use of a syndemic component index, latent class analysis can identify unique combinations of risk factors that may form a syndemic. Analyzing a primarily heterosexual sample of 1,786 Black men from the 2015 Behavioral Risk Factor Surveillance System (BRFSS), we used a 4 latent class model based on depression diagnosis, poverty, and healthcare access to predict ever having been HIV tested. Class 1 was characterized by low proportions of all the risk factors. Class 2 had relatively high healthcare barriers, being the most likely to not have a personal doctor (.8175) and the most likely to have no routine checkup in the past year (.6327) but had relatively low depression diagnosis and poverty. Class 3 had relatively high poverty (.8853), but generally low barriers to healthcare access. Class 4 was characterized by high proportions of all the risk factors. Using log-binomial regression models, there was a significantly lower prevalence of ever having been HIV tested among class 3 (PR = 0.69, 95% CI 0.49, 0.98) and class 4 (PR = 0.49, 95% CI 0.28, 0.84) compared to class 1. When adjusting for education, age, and marital status, the associations were attenuated but still significant for class 3 (aPR = 0.71, 95% CI 0.52, 0.96) and class 4 (aPR = 0.60, 95% CI 0.46, 0.78). Latent class analysis may better serve syndemic research aims in understanding HIV-related outcomes among high-risk populations. Future research using this method to evaluate HIV testing outcomes among BMSM is recommended.

Co-Occurring Psychosocial Problems and Multiple Sexual Partners among Men Who Have Sex with Men in Shanghai, China: A Syndemic Approach

We aimed to apply syndemic theory to verify the association and reinforcing effects between psychosocial problems and multiple sexual partners (MSP) of men who have sex with men (MSM) in Shanghai, China. A cross-sectional study was conducted among 547 MSM in Shanghai, China using a face-to-face survey. Sociodemographic and psychosocial data were collected, as well as information on MSP and condomless anal sex. In the 6 months prior to the survey, 54.3% of the MSM sample had had MSP. Univariate analysis showed that self-esteem, depression, loneliness, sexual compulsivity, and involuntary subordination (IS) were associated with MSP. Sexual compulsivity (multivariate odds ratio [ORm] = 2.94, 95% CI = 1.76-4.91) and IS (ORm = 1.79, 95% CI = 1.14-2.81) remained significant in multivariate analysis. MSM with five or more psychosocial problems had greater odds of (adjusted odds ratios = 3.06, 95% CI = 1.49-6.25) having MSP in the previous 6 months than the non-syndemic group. Our findings provide preliminary confirmation of the additive relationship of syndemic psychosocial health conditions and MSP among MSM in Shanghai, China. An integrated intervention with special focus on sexual compulsivity and IS is needed.

Longitudinal Effects of Syndemics on ART Non-adherence Among Sexual Minority Men

This study examined longitudinally the additive effect of syndemics, or co-occurring psychosocial problems, on antiretroviral treatment (ART) non-adherence among 390 HIV-positive sexual minority men. Participants completed measures of ART adherence (reduced to a non-adherence score using exploratory factor analysis) and six syndemic conditions. We employed multilevel modeling with the number of syndemics as a longitudinal predictor of non-adherence, and logistic regression with baseline syndemics predicting follow up viral load. Number of syndemics was a significant longitudinal predictor of non-adherence, with each additional syndemic associated with a 0.13 increase in non-adherence (p = 0.004). Each additional syndemic was also associated with 1.27 greater odds of detectable viral load (p = 0.002). Among HIV-positive sexual minority men in this sample, more syndemics were associated with lower ART adherence and greater odds of detectable viral load, suggesting the need for behavioral intervention to facilitate care for this population.

HIV Prioritization and Risk Perception Among an Online Sample of Men Who Have Sex With Men in the United States

Men who have sex with men (MSM) may prioritize interpersonal and structural factors, such as LGBTQ-related inequalities, housing instability, financial insecurity, and relationship seeking, over HIV prevention. The aim of this study was to assess how MSM prioritize HIV relative to other factors and the association between HIV prioritization, HIV testing and sexual risk behavior, and perceived risk. Data were collected from a national online survey of MSM in the United States assessing HIV knowledge and prioritization. Participants ranked HIV prevention relative to LGBTQ-related concerns and life issues (e.g., housing, job, relationship). Adjusted regression models were conducted to assess the association of HIV prioritization with HIV testing and condomless anal sex (CAS) and to evaluate associations between perceived risk and HIV risk behavior. Among 516 participants, HIV prevention was ranked significantly higher among MSM reporting recent CAS (p = .04) and HIV testing within the past (p = .02); HIV prevention was prioritized higher relative to life issues among MSM reporting last HIV test more than 1 year ago (p = .02). Perceived HIV risk was significantly associated with higher HIV prioritization relative to LGBTQ concerns (p = .001) and life issues (p = .001). Higher HIV perceived risk was associated with lower odds of any CAS (p < .001) and higher odds of having an HIV test in the past year (p < .001). In this online study, HIV prioritization was identified as differentially associated with HIV testing, sexual risk behavior, and perceived HIV risk. HIV prevention programs should integrate strategies to address social and structural inequalities based on priority needs of MSM.

Are trajectories of a syndemic index in adolescence linked to HIV vulnerability in emerging and young adulthood?

OBJECTIVES

To examine trajectories of adolescent psychosocial risk - drug use, depressive and anxiety symptoms, and violence victimization and observation - and the longitudinal relationship between psychosocial risk trajectories during adolescence and HIV risk behaviors in adulthood.

METHODS

The 18-year longitudinal study was conducted from September 1994 through May 2013, in Michigan. Eight hundred and fifty predominantly (80%) African-American adolescents completed demographics and measures of drug use, depressive and anxiety symptoms, violence victimization and observation at Times 1-4, sexual risk behaviors at Times 5 and 6, and social conditions (i.e. family, peer, and community-level factors) between 14.9 and 32.0 years of age.

RESULTS

Growth mixture modeling revealed two trajectories of psychosocial risk factors which can be characterized as a syndemic index: high-frequency and low-frequency. The high-frequency class was more likely to report HIV risk behaviors, including condomless sex at last sexual intercourse with their primary and secondary partner, sexual intercourse with someone they just met, at least four sexual partners, and licit and illicit drug use prior to sexual intercourse at Time 5 (mean age 23.1). At Time 6 (mean age 32.0), the high-frequency class was more likely to report sexual intercourse with someone they just met and at least four sexual partners, relative to the low-frequency class. In addition, the high-frequency class was linked to peer and family-level indicators of social conditions.

CONCLUSION

A syndemic index comprised of co-occurring psychosocial risk factors in adolescence seem to have lasting effects on the vulnerability to engage in HIV risk behaviors in emerging adulthood, some of which extend into young adulthood.

Prevalence and correlates of smoking and e-cigarette use among young men who have sex with men and transgender women

BACKGROUND

Although the prevalence of cigarette smoking in the United States has decreased, rates remain elevated among sexual and gender minorities (SGMs). This study examined rates and correlates of tobacco use among young men who have sex with men (YMSM) and transgender women.

METHODS

Participants (N=771) were drawn from the baseline assessment of an ongoing longitudinal cohort study of racially diverse MSM aged 16-29 years. Data collection took place in 2015-2016. Socio-demographic and SGM-specific (e.g., gender identity, sexual identity, physical attraction) correlates of cigarette smoking and electronic cigarette (e-cigarette) use were identified using logistic regression.

RESULTS

Twenty-one percent were current cigarette smokers. Nearly 40% ever tried an e-cigarette, but regular e-cigarette use was low (3.8%). Smokers were more likely to be older (vs. aged 16-18), less educated, homeless, bisexual or identify as some other sexual minority (vs. gay), attracted to males and females equally or more attracted to females than males (vs. males only), and HIV-positive. E-cigarette users were more likely to be transgender women (vs. cisgender men), White (vs. Black), more educated, and mostly attracted to females.

CONCLUSIONS

Findings highlight important risk factors for tobacco use among SGM youth. Correlates of smoking mirrored findings observed in the general population, but also included factors specific to SGM youth (e.g., sexual orientation, HIV status, homelessness). Although some variables (gender identity, attraction) demonstrated similar relationships with smoking and e-cigarette use, others (race/ethnicity, education) demonstrated opposite patterns. Findings underscore the urgent need for tobacco prevention and cessation interventions for SGM youth.

Effects of Parental Monitoring and Knowledge on Substance Use and HIV Risk Behaviors Among Young Men Who have Sex with Men: Results from Three Studies

Young men who have sex with men (YMSM) are disproportionately impacted by HIV/AIDS and have elevated rates of substance use. Parenting practices, such as knowledge of child whereabouts and monitoring of behavioral rules, protect against these outcomes among heterosexual youth. This article examined the relationship between these parenting practices and substance use and HIV risk behaviors among YMSM. Data are reported from three similar studies of YMSM: ChiGuys (ages 14-18), Crew 450 (ages 16-22), and RADAR (ages 16-29). The ChiGuys and RADAR studies report cross-sectional analyses, whereas Crew 450 reports latent growth curve analyses. In ChiGuys and Crew 450, participants reported significantly higher scores for parental knowledge of general activities than parental knowledge of gay-specific activities. Parental knowledge of general activities was significantly associated with less binge drinking in both samples and with condomless sex in the ChiGuys sample. Parental monitoring was significantly associated with less marijuana use and condomless sex in younger RADAR participants (16-18 years) and with less drug use in older participants (>18 years). Findings support the need for further research on the influences of parents on YMSM health risk behaviors and the value of exploring family- and parent-interventions to address YMSM health.