As of March 13, 2025, there have been 301 confirmed cases of measles across the U.S., surpassing the 2024 total of 285, according to the latest data from the Centers for Disease Control and Prevention (CDC). The cases have been reported in 14 states so far this year, compared to 31 states and Washington, D.C., where cases were confirmed last year.
The CDC reports that 93% of 2025 cases are associated with outbreaks, and the vaccination status of 95% of this year’s cases is classified as “unvaccinated or unknown.”
To help increase awareness and understanding of this highly contagious disease, South Dakota’s Project Firstline, in collaboration with the American Academy of Pediatrics, has developed educational and informational resources: Think Measles: Print | Digital
