(WHTM) – The Pennsylvania Department of Health reported 52 new measles cases since Wednesday, including four individuals vaccinated against the virus.
The department said the four individuals – three adults and one child – are residents of Centre, Jefferson, Lancaster, and Lycoming counties. None of these individuals were hospitalized, and the department noted that the MMR vaccine is 97% effective at preventing infection.
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“These four cases represent less than one percent of total confirmed cases in Pennsylvania,” the Department of Health said. “According to the national CDC dashboard, approximately 3 percent of measles cases across the country in 2026 have occurred in fully vaccinated individuals.”
This year, Pennsylvania has reported 676 cases, 124 hospitalizations, and two measles-associated deaths. Thirty-seven of the state’s 67 counties have experienced at least one case of measles this year.
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Only South Carolina has reported more cases than Pennsylvania this year, with 670. Utah is the only other state with at least 500 measles cases this year, according to the Centers for Disease Control.
Nearly 4,300 MMR vaccinations have been administered by state health officials at 130 pop-up vaccination clinics in affected communities since the outbreak began in April. Two doses of the vaccine are recommended to provide the best protection.
MMR vaccine is available across the state by contacting a health care provider, county or municipal health department, DOH State Health Center, Federally Qualified Health Centers (FQHCs), or a Vaccines for Children (VFC) program.
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