Heterosexual sex accounts for 23% of new HIV diagnoses each year. However, heterosexual people are drastically underrepresented in HIV preexposure prophylaxis (PrEP) research and campaigns. As a result, many heterosexual Americans are neither aware of their relative risk nor taking proper precautions.

In their Morbidity and Mortality Weekly Report, the US Centers for Disease Control and Prevention (CDC) reported that only 32.3% of heterosexual adults are aware of PrEP, and less than 1% use it.

The study included 9359 participants, all of whom consented to face-to-face interviews. The study was conducted among heterosexually active adults in 23 urban areas with high HIV prevalence. Analysis was limited to participants who tested negative for HIV and reported low income; the National HIV…