Measles has been spreading in the U.S. for a year, a milestone that could mean the virus can no longer be considered eliminated.

RFK Jr.'s new CDC deputy said this week he was unbothered by the prospect of the U.S. losing its measles-free status for the first time since 2000, citing "personal freedom" on vaccinations.

A growing measles outbreak in South Carolina has infected more than 600 people since October, with hundreds more being potentially exposed.

As the US looks set to lose its measles elimination status, scientists turn to wastewater tracking to limit outbreaks.

The U.S. has held its measles-free status for more than 25 years. Experts say unrelenting outbreaks in the past year may change that

Tuesday marks one year since a measles outbreak started in West Texas, and there have been more new cases in the United States each week since.

It’s unclear whether the United States can keep its designation as a country that officially eliminated the disease.

Wisconsin played a part in that, with a measles outbreak in Oconto County that stretched from August to October. The U.S. is on the verge of losing its measles-free status because of ongoing transmission. The decision will come in spring.

South Carolina reports over 500 measles cases, the largest US outbreak in 2026, with Spartanburg County most affected and hundreds quarantined.