Air travellers to the United States will face tougher Covid-19 testing rules, as several countries moved to seal-off their borders amid heightened uncertainty
Data from other countries already shows the variant was circulating before it was officially identified in South Africa and cases have appeared around the world, with numbers expected to grow.
Data from other countries already shows the variant was circulating before it was officially identified in South Africa and cases have appeared around the world, with numbers expected to grow.
The United States ordered airlines to hand over the names of passengers from southern African countries hit by the Omicron COVID-19 variant and other countries tightened their borders as a European leader urged people to "prepare for the worst".
Data from other countries already shows the variant was circulating before it was officially identified in South Africa and cases have appeared around the world, with numbers expected to grow.