Not sure, but certainly more than 10 cases, which about half of them have not had yet
https://www.michigan.gov/coronavirus/0,9753,7-406-98163-520743--,00.html
I doubt the incredibly isolated UP would get ravaged, plus they may just send them on an iceberg to canada at gunpoint. The main concern there is every single citizen in Michigan has a family cabin up north and will be transporting the city folk problem up there.
Hopefully we've bought time to get the protection, financial support and staffing that they'll need should this arrive up there. The first category hasn't been addressed adequately at all, and bracing for this has crippled the latter two areas.
The other elephant in the room is what happens when people finally come for the care they've needed for 6 weeks but were too scared to seek:
https://www.bridgemi.com/michigan-h...chigan-hospitals-where-are-all-other-patients
Who will be joining the scores of elective case that were put on hold, and most of these two groups are cases that would have been largely treated by now, clearing room for the next wave. Those are now all going to hit at once, in a broken medical system that is hanging on by a thread right now financially.