Data was captured from the Cumulative Data link of Michigan's Coronavirus webpage, under the url https://www.michigan.gov/coronavirus/0,9753,7-406-98163_98173_99207---,00.html.
The website contained the table Count of Confirmed COVID-19 Cases by Date of Onset , sorted by Michigan Preparedness Region. It also contained 18 charts, including the count of confirmed Covid-19 cases by date of onset in the state overall as well as in each preparedness region,and the normalized rate of Covid-19 cases per 1,000,000 residents in both the state and in each preparedness region.
WMU ScholarWorks Citation
Michigan Department of Health & Human Services, "2020-05-12_MichiganOverview_COVIDcounts" (2020). Michigan COVID-19 Confirmed Cases by Date of Onset Data. 34.