There have been 884 confirmed cases of measles across 30 states so far this year, according to the latest update from the CDC on Friday, far surpassing the 285 measles cases reported in the entirety of 2024 (the CDC does not provide data on how many cases are actively infectious).

Of those infected across the U.S., 97% of cases came from those who are unvaccinated or whose vaccination status is unknown.