Nov. 27, 2021
The first inkling of a new, potentially fearsome threat arrived a few days ago. The latest variant of the coronavirus was on the move, the Biden administration was told. And, before long, evidence emerged that the variant – which would be dubbed omicron – carried worrisome mutations. "I haven't been one to panic about new variants, but this one looks like it might be the perfect storm," said Michael Worobey, an expert on viral epidemics from the University of Arizona.