PA measles outbreak tops 1,000 cases, largest since disease was eliminated

Key points

• Pennsylvania's measles outbreak has surpassed 1,000 cases, 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 since April.
• There have been 207 hospitalisations and five deaths, all among unvaccinated individuals.
• Experts expect the US may lose its measles elimination status due to slipping vaccination rates.