The United Kingdom, Germany and Italy have confirmed their first two cases of the new Omicron strain of coronavirus.
The variant has prompted several countries to impose restrictions such as travel bans on several southern African countries, against the advice of the World Health Organization, while others have imposed fresh lockdowns to contain the spread of COVID-19.
The Omicron variant, which scientists say has a high number of mutations, was first detected in South Africa last week. In addition to the UK, cases have been reported in travellers in Belgium, Israel and Hong Kong.
The mutations in Omicron, also known as B.1.1.529, could help the virus evade the body’s immune response and make it more transmissible, according to scientists. It could take weeks to know if current vaccines are less effective against it.