April 28, 2025
Incidents of measles across the U.S. has gone up since 2024, with more cases appearing in smaller concentrations. Pennsylvania is among 30 states providing data on measles cases.
A total of 884 cases of the disease were confirmed nationally this year as of April 24, according to the CDC. In 2024, 285 confirmed cases of measles were reported.
The CDC uses the data collected from states to create models showing how measles outbreaks could occur and spread in the U.S. These models can be used to help health departments better identify communities at highest risk and manage resources.
Here are some key takeaways:
Measles is an airborne, extremely infectious, and potentially severe rash illness. Before the measles vaccine, an estimated 48,000 people were hospitalized and 400–500 people died nationally each year.
See more data on measles cases from the CDC.
Tags: Public Health
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