A genetic analysis of virus samples suggests that the UK-originating variant, which is 40-50 percent more transmissible, entered the country in late November 2020.
from Latest Science News -- ScienceDaily https://www.sciencedaily.com/releases/2021/03/210331103627.htm
from Latest Science News -- ScienceDaily https://www.sciencedaily.com/releases/2021/03/210331103627.htm
B.1.1.7 variant of COVID-19 spreading rapidly in United States
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April 01, 2021
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