I would be inclined to try private campgrounds - but prepared to stay off the grid, if all else fails. At least RVers have this option :-)
I can't find it again (darn it!) but I had found a website for Michigan, that showed WHERE most people thought they picked up the virus. Aside from obvious ones like the Detroit Airport; most locations were fast-food restaurants. I'm not going to avoid fast food - but will be handwashing/sanitizering like crazy after a visit. (We drove our minivan to FL, so will need to spend a night in a motel and eat out. Anyone got a spare haz-mat suit? LOL!)