New @CDCMMWR shows counties w/ school mask requirements had a smaller increase in pediatric #COVID19 case rates than counties w/o school mask requirem…


New @CDCMMWR shows counties w/ school mask requirements had a smaller increase in pediatric #COVID19 case rates than counties w/o school mask requirements. #MaskUp in schools to help control the spread of COVID-19 in children and adolescents. http://bit.ly/MMWR92421c

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