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UK coronavirus variant likely circulated undetected in US for months, researchers say
April 02 2021, 08:00
The more transmissible coronavirus variant first detected in the U.K. likely made its way to the U.S. months before it was discovered, according to a new analysis by researchers. In fact, the B.1.1.7 variant was likely “silently spreading” in 15 other countries before the U.K. identified it in December 2020.