I say underlying health issues!!!
I haven't seen many people mention this:
Compare Sweden's covid numbers to Michigan's... tell me the lockdown helped. Similar populations
Sweden Population: 10.23 million
Sweden covid infected: 13,216
Sweden covid death: 1,400
Michigan Population: 9.98 Million
Michigan Covid infected: 29,263
Michigan Covid death: 2,093
Sweden did not lockdown
Michigan has the strictest lockdown measures in the country