More than a 23 percent of the Fond du Lac County residents who got a free COVID-19 test at the Fairgrounds last week tested positive for the virus. Fond du Lac County Public Health Officer Kim Mueller says more than 400 people total used the drive-thru testing site last Thursday. Mueller says a little under 250 Fond du Lac County residents tested negative for the virus while 83 tested positive. The drive thru testing, conducted by the National Guard will be done Thursdays from 111am to 7pm at the Fairgrounds through December 10.