Allegheny County recorded just 53 new HIV diagnoses in 2025, a 32% drop from the 78 cases logged the year before and the lowest annual total since local surveillance began. It marks a 54% decline in new diagnoses since 2016, capping a decade-long push by regional health leaders to curb the virus's spread across southwestern Pennsylvania.
The figures come from surveillance data released by the Allegheny County Health Department, as reported by WPXI. County Executive Sara Innamorato said the decline reflects “a decade of coordinated outreach, testing expansion and treatment advancements across the region,” according to the same report, while also cautioning that ending HIV in the county “requires sustained commitment and continued protection and development of public health infrastructure, partnerships and trust.”
Much of that coordinated effort has run through AIDS Free Pittsburgh, a regional initiative managed by the Jewish Healthcare Foundation that coordinates HIV prevention, testing, treatment, education and outreach work across more than 50 partner organizations, including the Allegheny County Health Department, UPMC, Allegheny Health Network, and various advocates and community groups. The initiative launched on World AIDS Day in 2015 with an ambitious goal: cutting new HIV cases in the county by 75% and eliminating new AIDS cases by 2020, according to Health Affairs, which noted the effort borrowed from collective-impact models used in San Francisco and New York.
A Decade of Momentum, With Global Ties
Pittsburgh's local push eventually connected to an international one. In November 2021, then-Mayor Bill Peduto designated Pittsburgh a “Fast-Track City,” linking the region to a global network of more than 300 municipalities pledged to eliminate the HIV epidemic by 2030, per the University of Pittsburgh. Fast-Track Cities emphasize local data-sharing to speed up testing and prevention efforts, aligning with the federal “Ending the HIV Epidemic: A Plan for America” initiative, which the CDC launched in 2019 targeting 57 high-burden areas nationwide to cut new infections 90% by 2030.
AIDS Free Pittsburgh also credits itself with boosting local PrEP usage by roughly 400% since 2015, according to the same estimate cited by WPXI. PrEP, or pre-exposure prophylaxis, is medication used to prevent HIV infection before exposure occurs. Dr. Sarah McBeth, clinical director at the UPMC Pittsburgh Area Center for Treatment and medical director at Allies for Health + Well Being, said “the science and tools exist to end the HIV epidemic,” but stressed that prevention and treatment tools “must reach people and communities facing barriers to care.”
Persistent Gaps Behind the Record Low
Despite the milestone, stark disparities remain embedded in the numbers. Black residents in Allegheny County have been 10 times more likely than white residents to receive an HIV diagnosis over roughly the past decade, per the county's own figures. That gap persists even as awareness of prevention tools lags in the same community: a 2024 PrEP awareness survey released in March 2025 found that nearly half of Black respondents in the county reported not knowing about the medication at all, and roughly two in five county residents overall were unfamiliar with it, according to the Jewish Healthcare Foundation.
Late diagnoses also remain a concern. In 2024, roughly 1 in 7 new HIV cases in the county involved people who had already developed AIDS within 90 days of their initial diagnosis, according to the Allegheny County Health Department, signaling that some residents are still going too long without getting tested. Dr. McBeth said greater access to prevention, testing, treatment and care has driven tremendous progress, even as she acknowledged the work of closing those remaining gaps is ongoing.
Transmission patterns in the county also show where prevention efforts are focused. Men who have sex with men accounted for the majority of new HIV cases in Allegheny County, while heterosexual contact made up 23% of diagnoses in 2025. Roughly 1 in 13 people newly diagnosed with HIV in the county in 2024 reported injection drug use as a contributing risk factor, per Allegheny County Health Department data, underscoring the overlap between harm reduction programs and HIV prevention work.
Tracking Progress Through a New Dashboard
To keep tabs on these trends going forward, the Allegheny County Health Department launched an interactive Allegheny County HIV and STI dashboard intended to serve residents, researchers, and medical providers alike. The tool arrives as the county remains the clear hub of HIV care in southwestern Pennsylvania: more than 4,000 county residents were living with HIV as of 2024, compared with between 120 and 220 living cases each in neighboring Beaver, Butler, Washington and Westmoreland counties, according to TribLIVE. Smaller nearby counties like Armstrong and Greene had fewer than 95 living cases each, the outlet reported.
Zoomed out even further, the county's progress fits within a larger statewide and national picture. Since the epidemic began in 1981, more than 65,500 Pennsylvania residents have been diagnosed with HIV, and nearly 29,200 have died, leaving an estimated 36,300 Pennsylvanians currently living with the virus, per the same TribLIVE report. Statewide, Pennsylvania recorded 943 new HIV diagnoses in 2024, with an 88.4% rate of linking newly diagnosed patients to care within 30 days and a 65.9% viral suppression rate among those diagnosed, according to the CDC.
Younger residents remain a particular focus for outreach. Results from the 2025 Healthy Allegheny Teen Survey showed 7.4% of local high school-aged youth reported ever having received an HIV test, up from 6.1% in a previous county survey, according to the Allegheny County Health Department. Young adults between the ages of 15 and 34 continue to show higher diagnosis rates than older residents, reinforcing why public health partners are working to normalize routine testing earlier in life.
