Could New COVID Variants Undermine Vaccines?

Could New COVID Variants Undermine Vaccines?
(AP Photo/Alberto Pezzali)

As concern grows over faster-spreading variants of coronavirus, labs worldwide are racing to unpick the biology of these viruses. Scientists want to understand why SARS-CoV-2 variants identified in the United Kingdom and South Africa seem to be spreading so quickly, and whether they might diminish the potency of vaccines or overcome natural immunity and lead to spate of reinfections.

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