Wisconsin coronavirus patterns: St. Croix, Polk, and Pierce counties

All data found at Wisconsin Department of Health Services

Minneapolis Star Tribune, 5/15/2020

Related post:
Wisconsin COVID-19 cases mapped and graphed.  (Daily updates.)
Week by week: COVID-19 cases in Waukesha County, Wisconsin.  (6/3/2020)
Wisconsin coronavirus patterns: Outagamie, Waupaca, and Winnebago counties.  (6/2/2020)