Despite Texas declaring its measles outbreak over on August 18, the virus is surging nationwide. The CDC has logged 1,563 cases this year—the most since 1992—though experts warn the true count may be far higher. Officials are tracking major outbreaks in Utah and Arizona (118 cases, six hospitalizations) and South Carolina, where eight cases led to 21-day school quarantines for more than 150 unvaccinated children. Minnesota and Ohio also reported new infections. Most cases involve the unvaccinated, and falling MMR coverage has raised fears that elimination status is at risk.

Prepared by Olivia Bennett and reviewed by editorial team.