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Covid-19 Variant Could Make Herd Immunity More Difficult, Says BioNTech

The new coronavirus variant that is spreading across the U.K. could make it more difficult to reach so-called herd immunity, according to the chief executive of BioNTech, the German company that developed the Covid-19 vaccine with Pfizer.

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Covid-19 Variant Could Make Herd Immunity More Difficult, Says BioNTech