The new mutation of the AY.4.2
coronavirus is a more infectious version of the delta strain and soon this variant will replace the usual delta,
director of the Center for the Global Virological Network, WHO adviser, professor at George Washington University Konstantin Chumakov told RBC. Earlier, the
head of Rospotrebnadzor, Anna Popova, said that a new mutation of the coronavirus AY.4.2, which had...