The paper shows the county COVID-19 case counts increase by 3,000 per day on average two weeks after class starts at in-person institutions.

http://google.com.ag/url?q=http://skillstorm.instructure.com/eportfolios/518/

http://google.hn/url?q=http://canvas.usao.edu/eportfolios/238/

http://www.google.sh/url?q=http://jeff-lewisboces.instructure.com/eportfolios/21280/


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