The UK government has said it is “highly concerned” about two cases of a new mutation of the coronavirus which have been identified in people who have arrived from South Africa.
The Health Secretary Matt Hancock said the new strain of the virus is even more infectious than the recent new variant — which is thought to be causing a sharp rise in cases in the UK.
The UK has imposed travel restrictions on South Africa and has said anyone who has returned recently from the country should go into immediate quarantine.
George Alagiah presents BBC News at Ten reporting by health correspondent Sophie Hutchinson.
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