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Announcing restrictions on travel from South Africa Wednesday, Britain's Matt Hancock had said that the variant there was "highly concerning, because it is yet more transmissible, and it appears to have mutated further" than the similar strain in Britain.
South Africa has identified a new variant of the novel coronavirus, which authorities believe is driving a surge in COVID-19 infections that could overwhelm its healthcare system.
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Several countries, including Britain which has found the mutant variant in cases linked to South Africa, have banned flights from South Africa, disrupting holiday travel and frustrating tour operators.