Pfizer-BioNTech coronavirus vaccine works against UK and South Africa variants, firms say

The vaccine made by Pfizer and BioNTech appears to retain its effectiveness against coronavirus mutations in worrying new variants that have emerged recently in Britain and South Africa, the firms said on Thursday.Several new variants – each with a cluster of genetic mutations – have sparked fears over an increase in infectiousness as well as suggestions that the virus could begin to elude immune response, whether from prior infection or a vaccine.Pfizer/BioNTech, which had previously said it…

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