By Andrea Shalal, Leah Douglas, Ahmed Aboulenein and Ted Hesson WASHINGTON (Reuters) -Almost half of the probationary workers at the U.S. Centers for Disease Control and Prevention and others at the National Institutes of Health are being forced out as President Donald Trump overhauls government agencies,

Department of Health and Human Services officials expected most of the agency’s roughly 5,200 probationary employees to be fired.

The Centers for Disease Control and Prevention (CDC) is set to lose nearly 1,300 probationary employees—about 10% of its workforce—as part of a broader federal decision to remove all probationary employees from the agency.