ROME, ITALY, November 26, 2021 – Today, the World Health Organization (WHO) declared a new “variant of concern” (VOC) called Omicron. This variant has a large number of mutations, which preliminary evidence suggests the following: Increase in virulence Evades current vaccines Has high rates of transmission The number of cases of this variant appears to … Continue reading COVID variant Omicron: US and Europe blocks travel to South Africa