"Threat to US Measles Elimination Status: 2024 Outbreak Report"

The United States maintained its measles elimination status as of the end of 2023, despite a total of 338 reported measles cases from January 1, 2020, to March 28, 2024, with 29% occurring in the first quarter of 2024, mostly in unvaccinated individuals. The risk for widespread measles transmission remains low due to high population immunity, but efforts are needed to increase routine vaccination coverage, especially in undervaccinated communities, and to rapidly investigate suspected measles cases to prevent further cases and complications.