Pennsylvania Measles Outbreak Hits 1,004 Cases, Becoming Largest U.S. Surge in 30 Years
Pennsylvania has recorded 1,004 confirmed measles cases in 2026, surpassing South Carolina to become the largest U.S. outbreak in three decades. The state reports 198 hospitalizations and five deaths, with cases concentrated in Lancaster County. While vaccination rates have surged, experts warn the outbreak will likely persist for months due to low baseline immunity and limited local health infrastructure.
