Measles cases have surpassed 300 in the U.S. in 2025 thus far, more than the total number of infections seen in all of 2024.

The map below lists 316 cases across 15 states as reported by individual state health departments compared to the CDC's 301. How the measles outbreak spread: A look at vaccine exemption rates in ...

See map: Measles cases in US surpass 100 ... runny nose and watery eyes, according to the CDC. Measles rash appears three to five days after the onset of the first symptoms.