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A new study finds that the highly infectious B.1.1.7 variant of COVID-19, which swept across the UK last year before spreading worldwide, is between 30 and 100 per cent more deadly than previous strains.
A new study finds that the highly infectious B.1.1.7 variant of COVID-19, which swept across the UK last year before spreading worldwide, is between 30 and 100 per cent more deadly than previous strains.