Air travellers to the United States will face tougher COVID-19 testing rules to try to slow the spread https://www.reuters.com/world/asia-pacific/hong-kong-expands-travel-curbs-omicron-fears-australia-reports-5-cases-2021-11-30 of the Omicron variant as other countries tighten.
The European Union's public health agency said on Thursday that the Omicron variant could be responsible for more than half of all COVID-19 infections in Europe within a few months, but no cases of severe disease had yet been identified in the region.
Air travellers to the United States will face tougher COVID-19 testing rules to try to slow the spread of the Omicron variant as other countries tighten border controls.
Heavily mutated Omicron is rapidly becoming the dominant variant of the coronavirus in South Africa less than four weeks after it was first detected there, and the United States on Wednesday became the latest country to identify an Omicron case within its borders.
Heavily mutated Omicron is rapidly becoming the dominant variant of the coronavirus in South Africa less than four weeks after it was first detected there, and the United States on Wednesday became the latest country to identify an Omicron case within its borders.