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Danish study finds face masks provide moderate to no protection against COVID-19

COPENHAGEN, Nov 18 (Reuters) - A Danish study of 6,000 people suggests face masks provide only moderate protection against COVID-19 infection and could not preclude that they provide no protection at all, Denmark’s leading state hospital, Rigshospitalet, said on Wednesday. (Reporting by Jacob Gronholt-Pedersen; Editing by Catherine Evans)

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