We investigated PrEP uptake, adherence, and discontinuation among young app-using MSM in California (N=761). 9.7% of participants had ever used PrEP; 87% of those deemed good candidates for screening (indicated by a CDC risk index score ≥10) were not current or past users. PrEP use was associated with higher income (aOR:4.13; CI:1.87-9.12), receptive condomless anal sex(aOR:3.41; CI:1.71-6.78), HIV-positive sex partners (aOR:2.87; CI:1.53-5.38), popper use (aOR:3.47; CI:1.96-6.13), and recent STI diagnosis (aOR:2.90; CI:1.64-5.13). 41.5% of users wanted help remembering to take PrEP. The top reason for discontinuation was concern about long-term side effects (33.0%). YMSM app users are prime candidates for PrEP, despite low uptake. Apps may be useful tools for PrEP information dissemination, adherence monitoring, and support.

Geosocial networking applications (GSN apps) have become increasingly popular among gay, bisexual and other men who have sex with men (MSM). Our study sought to understand whether inclusion of individuals met via GSN apps in participants’ social networks was associated with increased HIV risk behaviors among a probability sample of GSN app using MSM (N=295) recruited in Los Angeles, California. Approximately 20% of participants included a GSN app-met individual as one of their top five closest social network members. Those with a GSN app-met network member had more recent (past 30-day) sexual partners (B=1.21, p<0.05), were nearly twice as likely to have engaged in unprotected anal intercourse (UAI) with their last sexual partner (AOR=2.02, p<0.05), and were nearly four times as likely to have engaged in UAI with their last GSN app-met sexual partner (AOR=3.98, p<0.001). Network-based interventions delivered via GSN apps may be useful in preventing the spread of HIV among MSM.

Researchers in this study examined the attitudes toward domestic violence, the victim, and her perpetrator. A total of 194 participants were randomly assigned to one of 4 hypothetical scenarios to evaluate how observers' perceptions were influenced by their own sex and myths about domestic violence, by the victim's decision to return to the abusive relationship, and by the relationship status of the victim (dating or married to the perpetrator). Results demonstrated significant main effects of participant's sex, domestic violence myths, and of the victim's relationship status and decision to return. That is, participants blamed the victim who reportedly returned to her abuser more than the victim about whom there is no such information. Further, participants with greater domestic violence myths tended to blame the victim more than those with less myths, and male participants blamed the victim and minimized the incident more than female participants. Implications, limitations of the study, and future research are discussed.

While correlates of pre-exposure prophylaxis (PrEP) uptake have been explored among older men who have sex with men (MSM), less is known about the facilitators and barriers that encourage uptake among younger MSM (YMSM). This study explores the association between willingness to take PrEP and demographic characteristics, sexual risk, and substance use, and attitudinal factors among YMSM in California who use geosocial networking applications (GSN apps). Based on survey data from YMSM recruited through GSN apps (n = 687), PrEP willingness was positively associated with Hispanic ethnicity [adjusted odds ratio (aOR): 1.73; confidence interval (CI): 1.01-2.98; p = 0.046], concerns about drug effects (aOR: 0.46; CI: 0.33-0.65; p < 0.001), medical mistrust (aOR: 0.71; CI: 0.53-0.96; p < 0.001), and concerns about adherence (aOR: 0.65; CI: 0.49-0.89; p = 0.005). PrEP willingness was positively associated with medium (aOR: 1.87; CI: 1.14-3.07; p = 0.014) and high concern (aOR: 1.84; CI: 1.13-3.01; p < 0.001) about contracting HIV and perceived benefits of taking PrEP (aOR: 2.59; CI: 1.78-3.78; p < 0.001). In addition to emphasizing the benefits of using PrEP, campaigns that address concerns regarding adherence and side effects may increase interest in and demand for PrEP among YMSM. More opportunities are needed to educate YMSM about PrEP, including addressing their concerns about this new prevention strategy. Providers should speak openly and honestly to YMSM considering PrEP about what to do if side effects occur and how to handle missed doses. Outreach using GSN apps for PrEP education and screening may be an effective way to reach YMSM.

Online social networking refers to the use of internet-based technologies that facilitate connection and communication between users. These platforms may be accessed via computer or mobile device (e.g., tablet, smartphone); communication between users may include linking of profiles, posting of text, photo and video content, instant messaging and email. This review provides an overview of recent research on the relationship between online social networking and sexual risk and protective behaviors with a focus on use of social networking sites (SNS) among young people and populations at high risk for sexually transmitted infections (STIs). While findings are mixed, the widespread use of SNS for sexual communication and partner seeking presents opportunities for the delivery and evaluation of public health interventions. Results of SNS-based interventions to reduce sexual risk are synthesized in order to offer hands-on advice for clinicians and researchers interested in engaging patients and study participants via online social networking.