28-DAY Omicron variant BA.5 behind new COVID surge
July 14, 2022 -
Os virologistas estão preocupados com uma variante Ómicron de rápida
mutação, a BA.2.75, designada Centauro, que já se dissemina mais
rapidamente que a BA.5, que constitui mais de 50% dos casos.
Omicron variant BA.5 was behind 52% of cases sequenced in late June, up from 37% in one week, according to the World Health Organization. BA.5 can evade the immune protection afforded either by vaccination or prior infection. BA.2.75 has a large number of extra mutations and appears to be spreading twice as fast as BA.5