Grant: Travel Awards - Institute Community Support

Undetectable=Untransmittable (U=U) and pre-exposure prophylaxis (PrEP) campaigns may have changed discussions of HIV status. We sought to examine trends and factors associated with not having discussed HIV status with sexual partners. 461 participants completed study visits every six months, providing event-level data on their last sexual encounter with up to their five most recent partners. Overall, the proportion of sexual events with unknown HIV status partners decreased over time. HIV-negative participants reporting an unknown HIV status partner (compared with seroconcordant partner) were more likely to self-assess high HIV acquisition risk, and less likely to report PrEP use, condomless receptive ) and condomless insertive anal sex. Having an unknown HIV status partner decreased over time for HIV-negative GBM, but increased for HIV-positive GBM. Unknown status partners were more common among younger HIV-positive GBM who preferred to bottom. Public health interventions should consider combination education, stigma reduction, and sexual communication interventions in a PrEP and U=U era.