Friday, November 6, coronavirus data by Michigan county: 30 counties now exceed 10% positivity rate

Thirty of Michigan’s 83 counties now have a coronavirus test positivity rate above 10%, a benchmark the federal Centers for Disease Control says is concerning.

This rate is based on a seven-day average of coronavirus testing.

A week ago today, eight counties had a positivity rate above 10%. The statewide seven-day average is now 8.6%, down from 6.5% a week ago.

The positivity rate is one of the measures used by the Michigan Department of Health and Human Services to assess coronavirus risk levels.

State officials are also looking at other factors such as daily new cases and deaths, number of tests administered and emergency room visits for COVID-19 symptoms.

Each week, MDHHS provides an overall score to each of the state’s eight MI Start regions. The Status scale has six levels: “Low” plus AE levels.

Three regions — the Grand Rapids and Kalamazoo regions and the Upper Peninsula — are now at Level E, the highest level on the state’s coronavirus risk scale, and the other five regions in the state are at Level E. D level.

This interactive map shows these eight regions and their current scores for this week.

(The state’s MI Start districts: Region 1 is Detroit Area; Region 2 is Grand Rapids; Region 3, Kalamazoo; Region 4, Saginaw; Region 5, Lansing; Region 6, Traverse City Region 7, Lansing and Region 8, Upper Peninsula.)

Below, MLive applies state metrics to two specific criteria — per capita case counts and test positivity rates — to each county to help readers track coronavirus transmission in their community.

New cases per capita

The number of new daily cases reported in Michigan continues to rise across the state.

The state’s seven-day average is now 3,798 new cases per day, a new high, from an average of 2,623 a week ago.

MDHHS assesses risk in individual regions or counties by calculating new cases per million population. The benchmark for Level E – the highest ranking and one that suggests a dangerous level of coronavirus transmission – is a seven-day average of 150 cases per day per million population.

The state average is now well above that benchmark, at 380.

And as of Friday morning, 77 counties were at Tier E, four at Tier D and one at Tier C.

There are no A or B or “low” level counties.

Current scores are based on new cases reported from October 30 to November 30. 5. The map below is shaded according to the six levels of the state. The arrows indicate whether the total number of new cases reported over the past seven days has increased or decreased compared to the previous seven days (October 23-29).

Readers can hover their cursor over a county to see the underlying data. If you don’t see the map, click here. (Tip: you can drag the map with your cursor to see the whole UP)

Latest news on coronavirus testing

In Thursday’s report from the state, Michigan averaged a 10.3% positivity rate for tests reported in the previous 24 hours. It was the second day in a row that the state average was above 10%.

Here’s a look at the seven-day average by county, broken down by state metric for positivity rates.

  • Level E (over 20%): Ontonagon.
  • Tier D (15-20%): Five counties, from highest to lowest — Dickinson, Delta, Muskegon, Gogebic, and Missaukee.
  • Level C (10-15%): 24 counties, highest to lowest — Cass, Emmet, Allegan, Van Buren, Macomb, Iosco, Ottawa, Branch, Berrien, Calhoun, Kent, Newaygo, Bay, Mecosta, Luce , Kalamazoo, Hillsdale, Barry, Saint-Joseph, Lake, Saginaw, Huron, Marquette and Genesee.
  • Tier B (7-10%): 29 counties, highest to lowest — Oceana, Iron, Crawford, Oakland, Monroe, Tuscola, Clinton, St. Clair, Livingston, Arenac, Osceola, Kalkaska, Schoolcraft, Roscommon, Jackson, Otsego, Midland, Benzie, Charlevoix, Menominee, Lapeer, Lenawee, Wexford, Wayne, Eaton, Mason, Isabella, Shiawassee and Sanilac.
  • Tier A (3-7%): 23 counties — Montcalm, Manistee, Ionia, Cheboygan, Grand Traverse, Gladwin, Ingham, Leelanau, Clare, Près Isle, Houghton, Alcona, Oscoda, Antrim, Montmorency, Mackinac, Keweenaw, Ogemaw , Washtenaw, Baraga, Alpena, Algiers and Gratiot.
  • Low (less than 3%): Chippewa.

The map below shows the seven-day average testing rate by county. If you don’t see the map, click here.

Below are online databases that allow readers to search county-level data for each of the past 20 days.

Cases per day it was reported to the state

The first is a graph showing new cases reported to the state each day for the past 20 days. This is based on when a confirmed coronavirus test is reported to the state, which means the patient first fell ill a few days prior.

You can call up a graph for any county and you can hover your cursor over a bar to see the date and number of cases. (As of Sept. 1, the state stopped reporting numbers on Sundays.)

(In a few cases, a county reported a negative (decreasing) number of new daily cases, following retroactive reclassification by the Michigan Department of Health and Human Services. In these cases, we subtracted cases of the previous date and put 0 in the reported date.)

The following table below shows new cases in the past 20 days based on symptom onset. In this chart, numbers for the most recent days are incomplete due to the lag between people getting sick and getting a confirmed coronavirus test result, which can take up to a week or more.

You can call up a graph for any county and you can hover your cursor over a bar to see the date and number of cases.

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.

Last daily report

On Thursday, November 5, the state reported 5,710 new coronavirus cases and 51 new deaths.

The map below shows the total number of confirmed coronavirus cases and deaths since the start of the pandemic. You can hover your cursor over a county to see the numbers behind it.

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.

For more data on COVID-19 in Michigan, visit

Learn more about MLive:

These October measures set off alarm bells over Michigan’s coronavirus outbreak

Michigan sets new records for coronavirus cases. Why are deaths and hospitalizations still so lower in the spring?

Will Michigan’s coronavirus outbreak impact Tuesday’s election?

6 reasons why Michigan is seeing an increase in the number of coronaviruses

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