New versions of the novel coronavirus are spreading across the globe. Researchers fear the new lineages may spread more easily—and one may be more deadly.
By Daniela Hernandez and Sarah Toy
Wall Street Journal
Scientists around the world are scrambling to learn more about previously unknown variants of the coronavirus that seem to spread from person to person more readily than other versions of the Covid-19-causing pathogen—including one variant that may also be more deadly.
A fast-spreading variant, known as B.1.1.7, was identified in December in the U.K., leading to travel restrictions and a widespread lockdown there. Since then, the U.K. variant…
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