Rutgers University Nov 17 2025 Medicaid expansion under the Affordable Care Act (ACA) significantly increased the number of people at risk of HIV diagnosis who were prescribed preexposure prophylaxis (PrEP), a preventative medication taken in pill or injectable form, according to Rutgers Health–led research. The study, published in Health Affairs , analyzed PrEP prescription data from all 50 states and Washington, D.C., between 2012 and 2023. Researchers found rates of PrEP prescribing