Hi Mads,
I added the following code to show data for any state using Manipulate
.
cases[state_] :=
ResourceData["Epidemic Data for Novel Coronavirus COVID-19", "USCounties"][
Select[#State == state &], {#County, #ConfirmedCases["LastValue"]} &] // Normal;
Manipulate[
GeoRegionValuePlot[Rule @@@ cases[state],
GeoLabels -> (Tooltip[#1, Column[{First@CanonicalName@#2, #4}]] &),
ColorFunction -> cfunc,
ColorFunctionScaling -> False,
PlotLegends -> legend,
PlotLabel -> "COVID19 cases in " <> First@CanonicalName@state,
ImageSize -> Large],
{state, EntityClass["AdministrativeDivision", "USStatesAllStates"] // EntityList,
ControlType -> PopupMenu}]