CHPSRERT @HedyFry: recently released NIH study of a 1million cohort of school kids in USA showed that schools with mandatory mask-mandates, had 72% fewer “in-school transmissions” of Covid19, compared with schools that did not have mask-mandates. https://twitter.com/CHPSRE/status/1536421925307551744


from Twitter https://twitter.com/CHPSRE

June 13, 2022 at 11:55AM
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