By Craig Mauger and Beth LeBlanc
https://www.detroitnews.com/staff/2683993001/craig-mauger/
https://www.detroitnews.com/staff/2684020001/beth-leblanc/
COVID-19 already had infected hundreds of Michiganians as U.S. Sen. Bernie Sanders and former Vice President Joe Biden barnstormed the state in early March seeking the Democratic presidential nomination, according to state health department data.
Infections of the novel coronavirus were surfacing — but not yet confirmed — more than a week before March 10, the date of Michigan's pivotal presidential primary election and when the state officially confirmed the first case here.
Although they tested positive at a later date, at least 365 Michigan residents' symptoms of the virus began before March 10, according to statistics tracked and publicly released by the state Department of Health and Human Services. There can be a lag of up to 14 days before someone who is infected begins feeling symptoms, according to health experts.
https://www.detroitnews.com/story/news/local/michigan/2020/05/18/covid-19-stirring-michigan-during-democratic-presidential-primary-race/5206564002/