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

Tuesday marks one year since a measles outbreak started in West Texas, and there have been new cases in the United States each week since. Texas reported more than 760 cases and the deaths of two children before declaring the outbreak over in August.

After a year of ongoing measles outbreaks that have sickened more than 2,400 people, the United States is poised to lose its status as a measles-free country. However, the newly appointed principal deputy director at the Centers for Disease Control and Prevention,

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.

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

It has been a full year since one of the worst measles outbreaks in recent U.S. history began ripping through West Texas. The highly infectious disease has continued to burn across multiple U.S. states,