Thousands of federal workers were laid off on Friday, but some at the CDC have been reinstated after they mistakenly received a layoff notice.

The White House and the CDC did not immediately respond to Reuters requests for comment.

Thousands of federal workers were laid off on Friday, but some at the CDC have been reinstated after they mistakenly received a layoff notice.

Layoff notices sent Friday to some 740 workers at the U.S. Centers for Disease Control and Prevention have been rescinded amid backlash from health groups.