Without other pandemic precautions, hospital mask rules didn’t stop COVID spread, study finds

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During the Omicron era, rules requiring mask use in U.K. hospitals didn’t prevent COVID-19 spread when there were no other pandemic precautions in place, a new study finds.

During the Omicron era, rules requiring mask use in U.K. hospitals didn’t prevent COVID-19 spread when there were no other pandemic precautions in place, a new study finds.