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Measles outbreak in Pennsylvania reaches 540 cases, 2 deaths

State health officials report 540 cases across 36 counties; Lancaster County has 242 cases and thousands are getting vaccinated.

Published Sep 2, 2026, 3:20 PM EDT | LehighValleyLive

The Pennsylvania Department of Health confirmed 540 measles cases across 36 counties Wednesday, marking a continuing spread of the highly contagious virus that has killed two people since the outbreak began in late April.