WHO designates ‘Omicron’ as ‘variant of concern’; EU, US ban travel from South Africa WHO designates ‘Omicron’ as ‘variant of concern’; EU, US ban travel from South AfricaWHO designates ‘Omicron’ as ‘variant of concern’; EU, US ban travel from South Africa
WHO designates ‘Omicron’ as ‘variant of concern’; EU, US ban travel from South Africa