Omicron Cases Now In 89 Countries, Doubling 3 Days In Areas With Local Spread – WHO—The Omicron coronavirus variant has been reported in 89 countries and the number of cases is doubling in 1.5 to 3 days in areas with community transmission, the World Health OrganiSation (WHO) said on Saturday.
The agency designated Omicron a variant of concern on Nov. 26, soon after it was first detected, and much is still not known about it, including the severity of the illness it causes.
“There are still limited data on the clinical severity of Omicron,” the WHO said. “More data are needed to understand the severity profile and how severity is impacted by vaccination and pre-existing immunity.”
It added, “There are still limited available data, and no peer-reviewed evidence, on vaccine efficacy or effectiveness to date for Omicron”