Friday, August 28, Michigan County coronavirus data: Isabella stays red, Grand Traverse turns orange

Isabella County reported another 28 positive coronavirus cases on Thursday, August 28, as the central Michigan county advanced toward the highest level of risk for the spread of the novel COVID-19 virus.

Home to Central Michigan University, it’s Michigan’s only county in the red — the highest of four colored areas based on a metric developed by the Harvard Global Health Initiative that looks at daily new cases per 100,000 population.

Isabella County is averaging 31.7 new cases per day per 100,000, according to data from Aug. 21-27. The second-highest county, Menominee, is averaging 17.6 new cases per day per capita.

Menominee County is joined in the orange zone by Saginaw, Macomb, Branch, Monroe and Grand Traverse counties, the last of which increased due to 23 new cases reported Thursday.

At the other end of the spectrum, seven counties have reported no new cases in the past seven days. They are part of the 10 green zone counties.

On the map below, readers can hover their cursor over a county to see the underlying data. If you don’t see the map, click here.

Latest news on coronavirus testing

Macomb County’s positive test rate remains the highest in Michigan, though it is gradually declining. Over the past two weeks, Southeast County has processed nearly 31,000 tests with an average positive test rate of 7.2%.

Both Saginaw and Ontonagon counties had been above the 5% benchmark set by the World Health Organization for determining whether it is safe to reopen schools. Their respective positive test rates have been reduced to 4.97% and 3.86%, according to data from August 13 to 26.

Twenty-three counties have a positive test rate of less than 1%, including four counties – Alpena, Keweenaw, Luce and Près Isle – which have not reported a positive test in two weeks.

As a state, Michigan has reported 396,279 diagnostic tests since August 13, of which 3.27% came back positive.

The map below shows the 14-day average testing rate by county. Again, readers can hover their cursor over a county to see the underlying data. If you don’t see the map, click here.

More localized maps

Below are two maps created by the EpiBayes research group at the University of Michigan Department of Epidemiology, which has access to subcounty data collected by the Michigan Department of Health and Human Services.

The interactive maps break the state down into 10 kilometer hexagons to provide a more localized view of where coronavirus cases are occurring. You can click here to access the research project website.

The first map looks at confirmed and probable coronavirus cases over the past week. You can click on a hexagon to see the underlying data.

You can use the triangle button at the top right of the map to switch to the second map, which shows the total number of confirmed coronavirus cases and deaths since the start of the pandemic.

As of Thursday, August 27, Michigan has reported 99,958 confirmed cases of COVID-19 and 6,440 known deaths. The state is seeing an average of 752 new cases and 10 new deaths per day, based on a seven-day rolling average.

For more statewide data, visit MLive’s coronavirus data page, here. To find a testing site near you, visit the state’s online test finder, here, email [email protected], or call 888-535-6136 between 8 a.m. and 5 p.m. h on weekdays.


Along with washing your hands regularly and not touching your face, authorities recommend practicing social distancing, assuming anyone can carry the virus.

Health officials say you should stay at least 6 feet away from others and work from home, if possible.

Use disinfectant wipes or disinfectant spray cleaners on frequently touched surfaces in your home (doorknobs, faucets, countertops) and carry hand sanitizer with you when you go to places like stores.

Michigan Governor Gretchen Whitmer also issued executive orders requiring people to wear face coverings over their mouths and noses in crowded indoor and outdoor public spaces. See an explanation of what this means here.

Additional information is available at and

For more data on COVID-19 in Michigan, visit

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