The Use of HIV Pre- and Postexposure Prophylaxis Among a Web-Based Sample of HIV-Negative and Unknown Status Cisgender and Transgender Sexual Minority Men: Cross-sectional Study.

Background: HIV disproportionately affects sexual minority men (SMM) in the United States.

Objective: We sought to determine past HIV postexposure prophylaxis (PEP) use and current and prior pre-exposure prophylaxis (PrEP) use among a web-based sample of cisgender and transgender men who have sex with men.

Methods: In 2019, HIV-negative and unknown status SMM (n=63,015) were recruited via geosocial networking apps, social media, and other web-based venues to participate in a brief eligibility screening survey.

Heterosexual Cisgender Men Partnered with Transgender Women Exhibit Higher HIV/STI Sexual Risk than Their Gay, Bisexual, and Queer Counterparts: Findings from a U.S.-Based Convenience Sample Recruited Online.

Cisgender men are frequently vectors for HIV transmission among transgender women. Despite this, the correlates of sexual risk among these men remain under-examined. The purpose of the present study was to explore potential differences in relationship characteristics, sexual risk-taking, and risk-reduction strategies among cisgender men partnered with transgender women.

Leveraging Technology to Blend Large-Scale Epidemiologic Surveillance With Social and Behavioral Science Methods: Successes, Challenges, and Lessons Learned Implementing the UNITE Longitudinal Cohort Study of HIV Risk Factors Among Sexual Minority Men in the United States.

The use of digital technologies to conduct large-scale research with limited interaction (i.e., no in-person contact) and objective endpoints (i.

The Utility of Index Case Recruitment for Establishing Couples' Eligibility: An Examination of Consistency in Reporting the Drug Use of a Primary Partner Among Sexual Minority Male Couples.

Sexual minority men are disproportionately impacted by substance use, which is associated with greater HIV transmission behaviors. Novel approaches to drug use prevention and treatment are needed. Couple-based approaches have garnered significant attention.

Growing Acceptability of Undetectable = Untransmittable but Widespread Misunderstanding of Transmission Risk: Findings From a Very Large Sample of Sexual Minority Men in the United States.

Background: Several studies have demonstrated no linked HIV transmissions in serodifferent sexual encounters where the partner with HIV has an undetectable viral load. As a result, awareness and dissemination of treatment as prevention, and movements such as "Undetectable = Untransmittable" (U = U), has grown.

Setting: We conducted an online cross-sectional survey from November 2017 through September 2018 to gather data from a total of 111,747 sexual minority men (SMM) in the United States.

Motivational Interviewing to Reduce Drug Use and HIV Incidence Among Young Men Who Have Sex With Men in Relationships and Are High Priority for Pre-Exposure Prophylaxis (Project PARTNER): Randomized Controlled Trial Protocol.

Background: Men who have sex with men (MSM) currently account for more than two-thirds of new HIV diagnoses in the United States and, among young MSM (YMSM) aged 20 to 29 years, as many as 79% to 84% of new infections occur between primary partners. Contributing to HIV risk, YMSM use drugs at comparatively high rates. To date, no interventions have been developed that specifically address the unique needs of partnered YMSM or incorporate a focus on relationship factors in addressing personal motivation for change.

Patterns of lifetime and recent HIV testing among men who have sex with men in New York City who use Grindr.

Rates of HIV infection continue to rise for men who have sex with men (MSM), and may be partially due to lack of testing among groups at risk for HIV. Mobile applications have demonstrated promise to identify at-risk MSM, though more research is needed to address testing patterns among this population. We conducted an online survey of 1,351 MSM in the New York City (NYC) area recruited from Grindr and analyzed predictors of lifetime and past-year testing using Pearson's chi-squared statistic, Fisher's exact tests, and logistic regression.

Perceived importance of five different health issues for gay and bisexual men: implications for new directions in health education and prevention.

This study assessed the perceived importance of five health issues for gay and bisexual men (N = 660) using time-space sampling in gay bars/clubs and bathhouses in New York City: "HIV & STDs," "Drugs & Alcohol," "Body Image," "Mental Health," and "Smoking." This study compared ratings based on demographic differences, recent substance use, recent sexual risk behavior, and whether or not participants owned a smart device (e.g.

Recruiting men who have sex with men on Craigslist.org for face-to-face assessments: implications for research.

We adapted time-space sampling to enroll men who have sex with men (MSM) off Craigslist.org for face-to-face interviews. Men responding to our ads (n = 322) were instructed to either complete an online pre-screening survey (to determine preliminary eligibility) or call our office directly.