Countries scramble to quell Omicron threat - BusinessWorld Online bworldonline.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from bworldonline.com Daily Mail and Mail on Sunday newspapers.
Air travellers to the United States will face tougher COVID-19 testing rules, while more countries tightened their borders amid uncertainty around the virulence of the Omicron variant and its ability to evade vaccine protection.
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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 around the virulence of the Omicron variant and its ability to dodge existing vaccines.