The virus is now in a race with the vaccines and the victor is increasingly uncertain
represents the changing of the guard. The B.1.1.7 lineage, first identified in Kent, had been dominant in the UK, but the B.1.617.2 lineage, first identified in India, comprised 58% of the most recent sequences, up from 44% the week before. There are strong regional differences, with under 10% of cases in Yorkshire and the Humber being the Indian-identified variant, while in north-west England that share is over 60%.
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