LANCASTER COUNTY, Pa. (WHP) — There are 12 confirmed measles cases among Pennsylvania residents as of Feb. 27, according to the Pennsylvania Department of Health.
Eight of those cases are in Lancaster County, three are in Montgomery County and one is in Chester County, the DOH told CBS 21.
The number of cases in the state have more than doubled since Feb. 19, when Pennsylvania reported five cases.
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All 12 of the confirmed cases occurred among unvaccinated residents, the DOH said.
Pennsylvania’s measles outbreak is part of a national trend, with the Centers for Disease Control and Prevention reporting 1,136 confirmed cases in the United States.
In 2025, there were 2,281 confirmed cases nationally and 16 cases in Pennsylvania. 93% of the cases were among people who were unvaccinated, according to the CDC.
More information on measles and symptoms can be found on the Department of Health’s website.