The Science of Beating Variants

Fast-moving variants of the coronavirus seen in England, South Africa and Brazil have sparked concern around the world. Researchers worry some may diminish the potency of existing vaccines and complicate efforts to escape the pandemic. As COVID-19 cases started to climb in early 2020, British scientists decided to track the evolution of the pathogen. James Paton reports that this project gives the country and others the chance to respond quickly if alarming changes arise.

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