How the Delta variant upends assumptions about the coronavirus
Julie Steenhuysen, Alistair Smout and Ari Rabinovitch, Reuters
Posted at Jul 26 06:37 PM
The Delta variant is the fastest, fittest and most formidable version of the coronavirus that causes COVID-19 the world has encountered, and it is upending assumptions about the disease even as nations loosen restrictions and open their economies, according to virologists and epidemiologists.
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