Overview
- The Pennsylvania Department of Health, which updated counts on Monday, reported 903 confirmed measles cases in 39 counties with 176 hospitalizations and four measles‑associated deaths.
- The CDC lists more than 3,600 cases nationally and has raised the U.S. death toll to two while it reviews a new standardized method for counting measles deaths that has left state and federal totals in disagreement.
- Nearly all infections are in people who are unvaccinated or have unknown vaccination status, with fewer than 1 percent of Pennsylvania cases in fully vaccinated individuals.
- State and local health departments have expanded pop‑up and school‑based MMR clinics, stepped up contact tracing, and issued exposure notices after cases spread from Lancaster County into suburban and central counties.
- Public health experts warn that kindergarten MMR coverage at about 92.4 percent is below the roughly 95 percent needed to stop sustained measles transmission, raising the risk of further school disruptions, hospital strain, and new clusters in other states.