U.S. measles cases rise to 4,852

REUTERS/SHANNON STAPLETON
A measles alert sign hangs outside the entrance to the Cohen Children’s Medical Center in New Hyde Park, New York, in March 2025. The number of measles cases reported in the United States has risen to 4,852 this year, an increase of 264 from the previous update, the Centers for Disease Control and Prevention said today.
The number of measles cases reported in the United States has risen to 4,852 this year, an increase of 264 from the previous update, the Centers for Disease Control and Prevention said today.
As of Thursday, 511 people had been hospitalized with measles, accounting for 11% of reported cases, according to CDC data.
People ages 5 to 19 accounted for the largest share of infections, with 2,010 cases. Adults ages 20 and older accounted for 1,996 cases, while children younger than 5 accounted for 812.
The vast majority of cases — 96% — involved people who were unvaccinated or whose vaccination status was unknown, up from 93% in 2025, the CDC data showed.
Pennsylvania has reported 1,398 measles cases so far this year, according to the state health department, which has also reported five measles-related deaths.
The CDC, however, has confirmed three measles-associated deaths nationwide in 2026 but has not specified where they occurred.
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