PA measles outbreak hits 1,000+ cases, largest in 35 years

Pennsylvania’s measles outbreak has surpassed 1,000 cases, marking the largest in the US since the disease was eliminated in 2000. Health officials reported 1,078 cases in 2026, with 1,066 linked to the current outbreak starting in April. The outbreak has led to 207 hospitalizations and five deaths, all among unvaccinated individuals. Nationwide vaccination rates have declined, leading to a resurgence of measles outbreaks. Experts expect the US to lose its measles elimination status due to the ongoing outbreak.