977 cases in the past 6 months. (+34 new)
Data as of Oct 3, 2026.
Pennsylvania has recorded 977 measles cases in the past six months, including 34 newly reported in the latest update. Figures are compiled from state and local health departments, the CDC, and local news, and update automatically as new reports come in.
Cases (past 6 months)
Pennsylvania health officials report five measles-associated deaths in the state's 2026 outbreak. The CDC's national tally lists two US measles deaths for 2026, reflecting a methodology change in how the agency classifies measles deaths.
Pennsylvania's measles outbreak reached 977 confirmed cases as of October 2, with 195 hospitalizations and a fifth measles-associated death, an unvaccinated Lancaster County resident. Lancaster County accounts for 391 cases. The outbreak spans 39 counties; more than 99 percent of cases are in unvaccinated or undervaccinated people.
Philadelphia health officials announced two possible measles exposures: at Children's Hospital of Philadelphia on September 11 and at Philadelphia International Airport on September 13-14. As of September 23, no measles cases had been reported in Philadelphia County, according to the state dashboard.