CDC Director Rochelle Walensky expects all schools will be fully open for in-person learning in September
By Caterina Andreano
More Contagious Virus Variant Is Now Dominant in U.S., C.D.C. Chief Says (Published 2021)
By Sheryl Gay Stolberg & Carl Zimmer
CDC says variant from the UK is now the most common strain circulating in the U.S.
By Berkeley Lovelace & Berkeley Lovelace Jr.
B.1.1.7 Variant Most Common Source of New U.S. Infections, C.D.C. Says
By Sheryl Gay Stolberg