CDC director warns states against dropping mask mandates amid concern about Covid mutations - Earth News Report
Dr. Rochelle Walensky, U.S. President-elect Joe Biden's appointee to run the U.S. Centers for Disease Control and Prevention (CDC), listens as 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, December 8, 2020.Kevin Lamarque | ReutersDr. Rochelle P. Walensky,
