BA.2 is a new more infectious subvariant of Omicron BA.1 & it is replacing BA.1 fast. Both are still called Omicron, although BA.2 should at least be named Omicron Plus. Omicron has already mutated to a more fit variant undermines the theory of predetermined endemic victory. pic.twitter.com/YmM53ETdfI — Naila T Rahman নায়লা তাসনীম (@nailatrahman) January … Leggi tutto Dalla Cina arriva la nuova variante Omicron 2: sta già dilagando nel Nord Europa