There have been 301 confirmed cases of measles across the U.S. so far this year, surpassing the 2024 total of 285, according to the latest data from the Centers for Disease Control and Prevention. As of March 13, cases have been confirmed in 14 states, whereas last year cases were confirmed in 31 states and Washington, D.C.

The CDC said 93% of 2025 cases are outbreak-associated. The vaccination status of 95% of this year’s cases is classified as “unvaccinated or unknown.”

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The Wisconsin Department of Health Services reported Nov. 5 that an infant died of measles, marking the first measles-associated death in the state since 1990.…
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The New York State Department of Health announced Nov. 2 that a child died of measles amid the state’s ongoing outbreak and is the first known measles…
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There have been 1,398 confirmed cases of measles in Pennsylvania this year, according to data released Oct. 28 by the Pennsylvania Department of Health. Data…
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There are now 1,338 confirmed measles cases in Pennsylvania this year as the state’s ongoing outbreak continues, according to the latest data from the…
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The ongoing measles outbreak in Pennsylvania has reached 1,260 confirmed cases, the Pennsylvania Department of Health announced Oct. 16. Of those, 238…
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The Pennsylvania Department of Health announced Oct. 5 that the state has reached 1,004 confirmed measles cases this year. There have been 27 new positive…