Home worldnews 'The effect is greatest when 100% of the public wear face masks': Growing body of research shows the role of face coverings in curbing the spread of the coronavirus 'The effect is greatest when 100% of the public wear face masks': Growing body of research shows the role of face coverings in curbing the spread of the coronavirus 6/13/2020 07:52:00 PM A+ A- Print Email https://ift.tt/2UKxequ via /r/worldnews https://ift.tt/2B3MF5Z worldnews Tweet Share Share Share Share Share
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