Monday, March 8, coronavirus data by Michigan county: state positivity rate at 4% for first time in weeks



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For the first time since February 8, Michigan’s seven-day average positivity rate for coronavirus diagnostic tests is now 4%.

Over the past three and a half weeks, the rate has ranged from 3.3% to 3.9%.

Along with the increase in the positivity rate, the seven-day average of new cases has also increased. It is currently 1,210, an increase of 11% from an average of 1,095 a week ago. This is the first time in four weeks that the seven-day average has exceeded 1,200.

The statewide seven-day average positivity rate on diagnostic testing for the coronavirus is now 4% from 3.5% a week ago today.

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 (more than 20%): none.
  • Level D (15-20%): None.
  • Level C (10-15%): Missaukee.
  • Level B (7-10%): 11 counties, highest to lowest – Kalkaska, St Joseph, Roscommon, Newaygo, Luce, Huron, Cass, Tuscola, Lapeer, Cheboygan and Shiawassee.
  • Level A (3-7%): 48 counties, highest to lowest – Livingston, Hillsdale, St Clair, Gogebic, Wexford, Berrien, Montmorency, Macomb, Calhoun, Allegan, Kalamazoo, Genesee, Bay, Ingham, Crawford, Arenac, Oceana, Wayne, Sanilac, Saginaw, Monroe, Osceola, Van Buren, Eaton, Kent, Mecosta, Lenawee, Midland, Leelanau, Jackson, Benzie, Antrim, Barry, Clinton, Gladwin, Oakland, Lake, Clare, Mason, Grand Traverse, Branch, Alcona, Ottawa, Otsego, Presque Isle, Ionia, Iosco and Ontonagon.
  • Low (less than 3%): 23 counties, highest to lowest – Montcalm, Delta, Muskegon, Houghton, Isabella, Emmet, Mackinac, Baraga, Gratiot, Washtenaw, Alpena, Charlevoix, Menominee, Ogemaw, Dickinson, Chippewa, Manistee, Alger, Iron, Marquette, Keweenaw, Oscoda and Schoolcraft.

The graph below lets you search any county by name to see the seven-day average positivity rate from February 24 to March 2. 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

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

This metric calculates the average number of new cases per 1 million population.

Levels for each county:

  • Level E (over 150 cases per million): 17 counties, highest to lowest – Missaukee, Newaygo, Sanilac, Saint-Joseph, Kalkaska, Calhoun, Crawford, Bay, Cass, Tuscola, Lenawee, Monroe, Berrien, Lapeer , Gogebic, Antrim and Shiawassee.
  • Level D (70 to 149 cases per million): 37 counties – Midland, Macomb, St. Clair, Livingston, Roscommon, Saginaw, Cheboygan, Barry, Jackson, Wexford, Genesee, Grand Traverse, Montmorency, Ingham, Huron, Allegan, Kalamazoo , Wayne, Kent, Hillsdale, Ionia, Eaton, Arenac, Oakland, Osceola, Ottawa, Washtenaw, Van Buren, Gladwin, Houghton, Lake, Clinton, Benzie, Mecosta, Delta, Oceana and Mason.
  • Level C (40 to 69 cases per million): 15 counties – Otsego, Keweenaw, Isabella, Charlevoix, Branch, Montcalm, Clare, Emmet, Schoolcraft, Mackinac, Gratiot, Alpena, Leelanau, Presque Isle and Chippewa.
  • Level B (20 to 40 cases per million), six counties: Marquette, Oscoda, Muskegon, Algiers, Alcona and Ontonagon.
  • Level A (7 to 20 cases per million): Menominee, Manistee, Iron and Dickinson.
  • Low (less than 7 cases per million): Ogemaw, Iosco, Luce and Baraga.

Here’s 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 is adjusting to the population. The arrows indicate whether the total number of new cases reported in the last seven days has increased or decreased compared to the previous seven days.

Current scores are based on new cases reported from February 25 to March 3. 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 February 18-24.

Readers can hover their cursor over a county to see the underlying data. (Hint: you can drag the map with your cursor to see all of the TOP)

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

Overall score

Michigan’s eight MI Start regions are now at Level D on the state’s Comprehensive Risk Assessment.

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 emergency room visits for symptoms of COVID-19. The scale used by MDHHS has six levels – “low” plus AE levels.

(The MI Start districts of the state: Region 1 is the Detroit region; 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 several 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, following a retroactive reclassification by the Michigan Department of Health and Human Services. In these cases, we subtracted the cases of the previous date and put 0 in the reported date field.)

The following table below shows new cases over the past 30 days based on symptom onset. In this graph, the numbers for the most recent days are incomplete due to the delay between illness 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 in the University of Michigan’s 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 go to the research project website.

The first map examines 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.

Latest daily report

On Saturday March 6, the state reported 1,280 new cases of coronavirus and 56 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, check out 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:

COVID-19 is reshaping Michigan. This is not the first epidemic to do so.

To marry or not to marry ?: How 6 brides navigate marriages during a pandemic

7 things to know about Michigan’s expansion of eligible vaccines for people aged 50 and over

This 105-year-old Michigan woman who survived 2 pandemics has some wise words to share

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