Affiliation: | 1.CDC COVID-19 Response Team; 2.Epidemic Intelligence Service, CDC; 3.Wisconsin Department of Health Services; 4.Wisconsin State Laboratory of Hygiene; 5.Preventive Medicine Residency Program, Department of Population Health Sciences, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin; 6.Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin. |