U.K. Variant Is Spreading Fast in U.S., Even as Overall Cases Level Off

The B.1.1.7 variant has likely grown to account for more than 20 percent of all new U.S. cases as of this week, and experts say it will likely exceed 50 percent of them by month’s end.

source https://www.nytimes.com/interactive/2021/03/06/us/coronavirus-variant-sequencing.html