COVID: how worried should we be about the new AY.4.2 lineage of the coronavirus?
COVID: how worried should we be about the new AY.4.2 lineage of the coronavirus?: SARS-CoV-2, the virus that causes COVID-19, with its spike proteins shown in blue. Design_Cells/Shutterstock No sooner than you thought all the talk of new COVID variants was over, there’s news of yet another one: AY.4.2. But what is it, where did …
