measles outbreakvaccination ratespublic health
Measles cases in the U.S. have significantly increased in 2024, with a notable rise in the first three months, being 17 times higher than the same period in the previous years.

The U.S. has seen 113 measles cases as of April 2024, predominantly linked to outbreaks in migrant shelters, with significant case importations from the Middle East and Africa among unvaccinated Americans. The recent surge raises concerns about the potential erosion of the U.S.'s measles elimination status and emphasizes the critical role of high vaccination rates to prevent further spread.