As of 28 September 2026, Pennsylvania reported 890 measles cases across 39 counties, with 55 new cases recorded since Wednesday. State health officials noted fewer than 1% of cases occurred among vaccinated individuals and 31% involved people under 18.
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Pennsylvania Measles Outbreak Grows to Nearly 900 Cases www.nytimes.com/2026/09/27/u... State health officials said 55 new cases had been reported since Wednesday. In all, 890 measles cases have been reported across 39 counties so far this year.
“The agency noted that fewer than 1 percent of reported cases were among people who were vaccinated against the disease and that 31 percent of cases were among people under 18” www.nytimes.com/2026/09/27/u... State health officials said 55 new cases had been reported since Wednesday. In all, 890 measles cases have been reported across 39 counties so far this year.