Measles cases have been reported by 39 states and jurisdictions in the United States, the worst outbreak since 2019.

There have been at least 1,277 confirmed cases of measles reported in the U.S. in 2025, according to data from a Johns ...

Johns Hopkins University reports 1,277 cases have been confirmed so far this year. Health experts say the bulk of the cases ...

In the early days of the West Texas measles outbreak, Thang Nguyen eyed the rising number of cases and worried. His 4-year-old son was at risk because he had received only the first of the vaccine's ...