Thursday, March 18, coronavirus data by Michigan county: See which counties have the highest increases


As the coronavirus count rises in Michigan, the Cadillac area and the Thumb area are reporting the highest seven-day averages of new daily cases.

The top five counties in this metric: Missaukee and Wexford in the northwest of the Lower Peninsula, and Huron, St. Clare and Tuscola in and around Thumb.

A total of 43 of Michigan’s 83 counties are now at the state’s highest risk level based on an average of seven days of new cases. Among the urban counties at this level: Wayne, Oakland, Macomb, Kent, Genesee, Ingham, Ottawa, Kalamazoo, Saginaw, Jackson, Calhoun, Monroe and Bay.

Statewide, the seven-day average positivity rate on coronavirus diagnostic tests is 6%, down from 4.3% a week ago today. As of Tuesday, 6.3% of reported coronavirus test results were positive.

On the seven-day average of new cases, the state averages 2,073 new cases per day, up 52% ​​from 1,362 a week ago today.

Pandemic is not over, Michigan officials warn as COVID-19 numbers rise

Below is a more in-depth look at the county-level data, based on two of the metrics used by the Michigan Department of Health and Human Services.

First, a look at the seven-day average positivity rates by county, grouped by state metric.

  • Level E (over 20%): Missaukee and Huron.
  • Level D (15-20%): Wexford and St. Clair.
  • Level C (10-15%), eight counties from highest to lowest: Tuscola, Cass, Lapeer, Roscommon, Otsego, Hillsdale, Cheboygan and Macomb.
  • Level B (7-10%): 20 counties, highest to lowest – Newaygo, Calhoun, Sanilac, Kalkaska, Genesee, Osceola, Eaton, Luce, Livingston, Allegan, Monroe, Wayne, Ingham, Branch, Van Buren, St Joseph, Clinton, Berrien, Kalamazoo and Keweenaw.
  • Level A (3-7%): 33 counties, highest to lowest – Ottawa, Midland, Oakland, Jackson, Gladwin, Crawford, Saginaw, Bay, Kent, Muskegon, Shiawassee, Mason, Mecosta, Ontonagon, Charlevoix, Clare, Lenawee, Lake, Oscoda, Grand Traverse, Leelanau, Oceana, Delta, Benzie, Barry, Ogemaw, Arenac, Houghton, Montcalm, Antrim, Emmet, Presque Isle and Iosco.
  • Low (less than 3%): 18 counties, highest to lowest – Ionia, Gogebic, Isabella, Baraga, Alpena, Menominee, Chippewa, Washtenaw, Schoolcraft, Dickinson, Gratiot, Marquette, Manistee, Alcona, Alger, Iron , Mackinac and Montmorency.

The graph below lets you search any county by name to see the seven-day average positivity rate from March 9 to 15. The graph compares the average of the last seven days to the average of the previous week.

The interactive map below shows the seven-day average testing rate by county. You can hover your cursor over a county to see the underlying data.

New cases per capita

Another metric used by the Michigan Department of Health and Human Services to access coronavirus risk is daily new cases per capita.

This measure calculates the average number of new cases per 1 million inhabitants.

Levels for each county:

  • Level E (over 150 cases per million): 43 counties, highest to lowest – Missaukee, Wexford, Huron, Sanilac, St. Clair, Otsego, Roscommon, Keweenaw, Calhoun, Tuscola, Lapeer, Cass, Macomb, Monroe, Jackson, Antrim, Osceola, Newaygo, Livingston, Genesee, Ingham, Cheboygan, Eaton, St. Joseph, Wayne, Oakland, Saginaw, Kalamazoo, Allegan, Grand Traverse, Berrien, Van Buren, Clinton, Midland, Ottawa, Branch, Crawford, Kent, Bay, Lenawee, Kalkaska, Leelanau and Hillsdale.
  • Level D (70 to 149 cases per million): 20 counties – Ontonagon, Shiawassee, Charlevoix, Ionia, Barry, Isabella, Washtenaw, Delta, Gladwin, Emmet, Oceana, Lake, Dickinson, Montcalm, Mecosta, Muskegon, Houghton, Benzie and Mason.
  • Level C (40-69 cases per million): nine counties –Iosco, Alpena, Schoolcraft, Baraga, Oscoda, Clare, Chippewa, Marquette and Presque Isle.
  • Level B (20 to 40 cases per million), seven counties: Mackinac, Arenac, Gratiot, Gogebic, Montmorency, Menominee and Luce.
  • Level A (7 to 20 cases per million): Manistee, Algiers, Alcona and Iron.
  • Low (less than 7 cases per million): none.

Here is an online database that allows readers to see the number of new coronavirus cases in the past seven days compared to the previous week, as well as the number per capita that adjusts for the population. Arrows indicate whether the total number of new cases reported in the past seven days has increased or decreased from the previous seven days.

Current scores are based on new cases reported from March 11 to 17. The map below is shaded based on the six levels of state. Arrows indicate whether the total number of new cases reported in the past seven days has increased or decreased from March 4-10.

Readers can hover their cursor over a county to see the underlying data. (Tip: you can drag the map with your cursor to see the entire UP)

Below are online databases that allow readers to search county level data for each of the past 30 days.

Overall score

Seven of Michigan’s eight MI Start regions are now at Level D in the state’s Comprehensive Risk Assessment. The upper peninsula is at level C.

In assigning risk scores, the Michigan Department of Health and Human Services examines factors such as new cases and deaths per capita, test positivity rates, number of tests administered, and visits to medical services. emergency for COVID-19 symptoms. The scale used by the MDHHS has six levels: “low” plus the AE levels.

(State MI Start Districts: Region 1 is Region Detroit; Region 2 is Grand Rapids; Region 3, Kalamazoo; Region 4, Saginaw; Region 5, Lansing; Region 6, Traverse City; Region 7, Jackson, and Region 8, the Upper Peninsula.)

Cases daily it was reported to the State

The first is a graph showing new cases reported to the state each day for the past 30 days. This is based on when a confirmed coronavirus test is reported to the state, which means the patient first became ill a few days ago.

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

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

The following graph below shows new cases over the past 30 days based on symptom onset. In this graph, numbers for the most recent days are incomplete due to the time 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 chart 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 sub-county data collected by the Michigan Department of Health and Human Services.

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

The first map examines confirmed and probable cases of the coronavirus 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.

Latest daily report

As of Wednesday, March 17, the state reported 3,164 new cases of coronavirus and zero 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 underlying numbers.

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

For more data on COVID-19 in Michigan, visit https://www.mlive.com/coronavirus/data/.

Learn more about MLive:

The number of coronaviruses in Michigan is rising, but will vaccinations lessen the impact?

No, Johnson & Johnson coronavirus vaccine is not inferior, Michigan doctors say

COVID brides and industry professionals reflect on how pandemic could change future marriages


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