The study came from a clinic based in the heart of London's gay scene.
The study also found that nine states accounted for 44 percent of new HIV diagnoses in 2019.
The Biden administration has directed the companies to not charge copays or deductibles for medicine, labs, or office visits.
The study highlighted the incredible efficacy of the preventative medication.
Experts say increased funding for HIV services and prevention and fighting stigma are key.
The bill now heads to Gov. Kate Brown to sign.
Activists praised the president's request for an additional $267 for the Ending the HIV Epidemic initiative but said it falls short of what they'd like to see.