Measles outbreaks in Texas and New Mexico are fueling concerns about the rapid spread of the highly contagious virus. There have been more than 100 measles cases in the United States so far this year, compared with 285 cases in all of 2024. And health officials have warned that they expect more people to fall ill.

Measles are spreading and have already caused one death. Here's what you need to know according to the CDC and medical experts.

Measles has been spreading across the U.S. for the last several weeks, sickening people in at least nine states amid a growing outbreak in western Texas. Several people have been hospitalized and at least one unvaccinated school-aged child in Texas has died,