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Engagement in HIV care and a high level of antiretroviral therapy (ART) adherence for people living with HIV is crucial to treatment success and can minimize the population burden of the disease. Despite this, there is a critical gap in HIV prevention science around the development of interventions for serodiscordant male couples. This paper reports on the results of a randomized controlled trial to assess the efficacy of Stronger Together, a dyadic counseling intervention aimed at increasing engagement in and optimizing HIV care among serodiscordant male couples in Atlanta, GA, Boston, MA, and Chicago, IL. Between 2014 and 2017, 159 male serodiscordant couples (total N = 318) in Atlanta, GA, Boston, MA, and Chicago, IL were enrolled and equally randomized to either the Stronger Together intervention arm (a three-session dyadic intervention involving HIV testing and adherence counseling) or a standard of care (SOC) control arm. Couples completed individual study assessments via an audio computer assisted self-interviewing (ACASI) system at baseline, 6, 12 and 18 months. Primary outcomes included being prescribed and currently taking ART, and fewer missed doses of ART in the past 30 days; because the trial was not powered to examine viral suppression, we examined this as an exploratory outcome. Longitudinal data analysis was by an intention-to-treat approach. Participants ages ranged from 18 to 69 (mean = 35.9), and are predominantly white (77.5%), and college educated (68.4% earned a college degree or higher). Participants randomized to the Stronger Together arm had a significantly greater odds of being prescribed and currently taking ART over time than those in the SOC arm (at 12 months OR 2.75, 95%CI 1.35-4.67, p-value 0.020, and at 18 months OR 2.91, 95%CI 1.61-4.88, p-value 0.013). Similarly, those in the Stronger Together arm had a significantly lower odds of missing a dose of ART in the past 30 days over time compared to those in the SOC arm (at 12 months OR 0.28, 95%CI 0.09-0.81, p-value 0.019, and at 18 months OR 0.25, 95%CI 0.07-0.82, p-value 0.023). Among male couples in serodiscordant relationships, the Stronger Together intervention resulted in significantly improved HIV treatment outcomes at both 12 and 18 months of follow-up. This trial is the first to date to demonstrate evidence of efficacy for a dyadic counseling intervention and has the potential to fill a critical gap in secondary HIV prevention interventions for serodiscordant male couples.

Background: Among men who have sex with men, there is now clear evidence that the risk of HIV transmission through condomless sex when the HIV-positive partner is virally suppressed is effectively zero. However, an understanding of the accuracy of reporting of viral load among serodiscordant same-sex male couples is missing from the literature., Setting: This analysis uses data from the baseline sample of Stronger Together, a randomized controlled efficacy trial of an innovative dyadic intervention to enhance antiretroviral therapy adherence for HIV serodiscordant male couples in 3 US cities (Atlanta, Boston, and Chicago)., Methods: Biomarker-confirmed and self-reported measures of viral load were used to assess the accuracy of self-report of viral suppression. In this descriptive analysis, the percentage of men who inaccurately reported being virally suppressed is compared across demographic, relationship, and HIV care characteristics., Results: Results confirm those of other recent studies that have shown relatively high levels of inaccuracy in reporting of viral suppression. Although 72.5% of men could accurately report their viral load status, 20% reported that they were virally suppressed when they did not have a biomarker-confirmed measure of viral suppression., Conclusion: These results highlight the need to provide interventions to men who have sex with men living with HIV to support access to care and ensure current knowledge of viral load and to continue to support primary prevention of HIV through condom use and pre-exposure prophylaxis. For couples, particularly serodiscordant male couples, interventions that can teach the couple how to collaborate to achieve and maintain viral suppression for the positive partner are an urgent and pragmatic programmatic priority that can equip couples with the knowledge required to correctly implement U = U strategies.