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Ba.4

plagued June 8, 2022

This New COVID Wave May Be More Like a FloodWith the BA.4 and BA.5 Omicron subvariants rising, the U.S. may be stuck with high levels of infection and reinfection for a while.

By Chas Danner
covid-19 May 31, 2022

What We Know About All the Omicron Subvariants, Including BA.2.12.1BA.2.12.1 is now the dominant COVID strain in the U.S. and is driving another wave of cases.

By Matt Stieb and Chas Danner

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