The COVID-19 patients filling Michigan’s hospitals are mothers, fathers, brothers and sisters. They hail from throughout the state, from the tip of the Upper Peninsula to the Ohio and Indiana borders; they live in city apartments and old farm houses on land dotted by cornstalks. They are younger than many of the COVID-19 patients in the past — parents with small children, recent graduates, people heading into their first-ever jobs. And, overwhelmingly, they are unvaccinated.