CDC director says decision to recommend masks again 'weighed heavily' on her

r. Rochelle Walensky, now director of the U.S. Centers for Disease Control and Prevention (CDC), removes her mask to speak as Joe Biden announces nominees and appointees to serve on his health and coronavirus response teams during a news conference at his transition headquarters in Wilmington, Delaware, U.S., December 8, 2020. REUTERS/Kevin Lamarque/File Photo
Kevin Lamarque/Reuters
CDC Director Rochelle Walensky defended her agency's decision to shift its guidance on masking.
"This was not new