3,988,810 Iowans have been tested for the coronavirus to this point. 360,897 have tested positive. 5,400 of those have now died. Here are the approximate active case totals for local counties: Bremer County has 248. Butler County has 127. Floyd County has 197. Chickasaw County has 94. Fayette County has 151. Buchanan County has 193. Black Hawk County has 1,900.