1 VA Boston Healthcare System, Department of Medicine, Section of Infectious Diseases, Boston, Massachusetts, USA.
2 VA Boston Center for Healthcare Organization and Implementation Research, Boston, Massachusetts, USA.
3 Harvard Medical School, Department of Medicine, Boston, Massachusetts, USA.
4 Department of Emergency Medicine, Boston University School of Medicine and Boston Medical Center, Boston, Massachusetts, USA.
5 COVID-19 School Response Dashboard.
6 Beth Israel Deaconess Medical Center, Department of Medicine, Section of Infectious Diseases, Boston, Massachusetts, USA.
7 Informatics, Decision Enhancement, and Analytic Sciences (IDEAS) Center, Veterans Affairs Salt Lake City Healthcare System, Salt Lake City, Utah, USA.
8 Division of Epidemiology, University of Utah School of Medicine, Salt Lake City, Utah, USA.
9 Brown University Watson Institute for International and Public Affairs, Providence, Rhode Island, USA.