76. Effects of the “Undetectable = Untransmittable” (“U=U”) Educational Campaign on Treatment Outcomes and Perceptions among People Living with HIV in North American Countries

BACKGROUND: The educational campaign “Undetectable = Untransmittable” (U=U) began in 2016 to improve the well-being of people living with HIV (PLHIV) and recalibrate HIV-related social norms. As medical practice can vary by region, we examined reports from PLHIV in North American countries to identify if the campaign affected healthcare provider (HCP) communication of U=U and if positive health outcomes differed by U=U-informed status or country. METHODS: Data were collected from the 2019 Positive Perspectives survey of PLHIV in Canada (n=120), Mexico (n=63), and the United States (US; n=400) and stratified by country. Outcomes were self-rated mental and sexual health (“Good”/”Very good”), viral suppression, and sharing of HIV status. Treatment perceptions were also assessed. RESULTS: Whether diagnosis occurred before or after the U=U campaign launch did not significantly affect the proportion of PLHIV who reported receipt of U=U from an HCP in any North American country. Whether an individual was informed of U=U varied significantly by sexual orientation (heterosexual, 62.8%; homosexual, 74.9%; other, 87.8%), sex (men, 64.7%; women, 89.8%; other, 100%), and metropolitan vs non-metropolitan residence (metropolitan, 78.2%; non-metropolitan, 65.2%) in the US (P< 0.01 for all) but not in Canada or Mexico. Prevalence of sharing of HIV status with ≥ 1 person besides an HCP varied among PLHIV (Canada, 87%; Mexico, 95%; US, 84%). Prevalence of other positive outcomes varied by country and whether PLHIV had been informed of U=U (Figure). Whether PLHIV were informed of U=U was also correlated with treatment satisfaction and the perception that treatment needs were being met among PLHIV in the US and Canada (P< 0.01 for all), and with the belief that treatment prevents transmission among PLHIV in the US (P=0.01). Figure. Prevalence of positive outcomes among PLHIV in Canada (n=120), Mexico (n=63), and the US (n=400). PLHIV, people living with HIV; US, United States; U=U, Undetectable = Untransmittable. *P<0.01 for U=U informed vs uninformed. [Image: see text] CONCLUSION: Being informed of U=U was associated with higher treatment satisfaction, and higher mental and sexual health outcomes among PLHIV in North America. Receipt of U=U was associated with significantly higher treatment satisfaction among PLHIV in the US and Canada, and significantly more PLHIV with optimal mental and sexual health in the US. DISCLOSURES: Frank Spinelli, MD, ViiV Healthcare (Employee) Bruce Richman, JD, ViiV Healthcare (Consultant) Patricia De Los Rios, MSc, GlaxoSmithKline (Shareholder)ViiV Healthcare (Employee) Benjamin Young, MD, PhD, GlaxoSmithKline (Shareholder)ViiV Healthcare (Employee) Nicolas Van de Velde, PhD, ViiV Healthcare (Employee) Chinyere Okoli, PharmD, MSc, DIP, GlaxoSmithKline (Shareholder)ViiV Healthcare (Employee)