The Pennsylvania Department of Health (DOH) today announced that 577 measles cases have been confirmed across 37 counties in Pennsylvania so far in 2026.
State health officials have administered more than 3,900 MMR vaccinations at more than 100 pop-up vaccination clinics in the affected communities since the outbreak began in late April.
Dozens of additional vaccine clinics are scheduled for the upcoming weeks and months, based on community interest and need. Overall, state health center staff have administered more than 5,700 MMR vaccine doses to residents across the Commonwealth in 2026.
Health care providers have also seen a surge of interest from residents seeking MMR vaccinations. In a typical month, Pennsylvania health care providers administer approximately 25,000 doses of the MMR vaccine. In August 2026, more than 46,000 MMR vaccines were administered across the Commonwealth.
