Wednesday February 24, data on coronaviruses by Michigan county: number of cases, positivity rate up slightly


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After weeks of decline, Michigan’s seven-day average of new cases and the positive rate of coronavirus diagnostic rates are up slightly.

These increases come three weeks after restaurants in Michigan reopened for dining, as well as many schools reopening and high school sports resuming in recent weeks.

Michigan’s seven-day average of daily new cases is now 922 new cases per day, a 3% increase from an average of 898 a week ago. The statewide seven-day average positivity rate on coronavirus diagnostic tests is now 3.6%. slightly above 3.4% from 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%): None.
  • Level B (7-10%): highest to lowest – Kalkaska, Gogebic, Presque Isle and Wexford.
  • Level A (3-7%): 47 counties, highest to lowest – Huron, Cheboygan, Lapeer, Newaygo, Tuscola, Eaton, Ingham, Missaukee, Van Buren, Hillsdale, Cass, Mecosta, Houghton, Mackinac, Shiawassee , Calhoun, Kalamazoo, Roscommon, Lenawee, St Joseph, Jackson, Macomb, Berrien, Livingston, Crawford, Keweenaw, Ottawa, Wayne, Allegan, St Clair, Genesee, Kent, Saginaw, Alpena, Bay, Monroe, Sanilac, Otsego, Ionia , Oakland, Barry, Arenac, Clinton, Montmorency, Grand Traverse, Ontonagon and Branch.
  • Low (less than 3%): 32 counties, highest to lowest – Emmet, Dickinson, Muskegon, Oceana, Benzie, Gladwin, Luce, Isabella, Ogemaw, Iosco, Menominee, Montcalm, Mason, Lake, Baraga, Midland , Clare, Osceola, Washtenaw, Chippewa, Charlevoix, Oscoda, Gratiot, Manistee, Delta, Antrim, Marquette, Iron, Alcona, Alger, Leelanau and Schoolcraft.

The graph below lets you search any county by name to see the seven-day average positivity rate from February 16 to 22. 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): four counties, highest to lowest: Keweenaw, Missaukee, Gogebic and Lapeer.
  • Level D (70 to 149 cases per million): 39 counties – Sanilac, Washtenaw, Houghton, Cass, Cheboygan, Lenawee, Newaygo, Jackson, Mackinac, Eaton, Hillsdale, Ionia, Leelanau, Barry, Kalkaska, Kent, Calhoun, St Joseph, Berrien, Ingham, Presque Isle, Macomb, Mecosta, Shiawassee, Saginaw, Bay, Roscommon, Grand Traverse, Van Buren, Osceola, Ottawa, Kalamazoo, Wayne, Oakland, Livingston, Huron, St. Clair, Tuscola and Alpena.
  • Level C (40-69 cases per million): 22 counties – Allegan, Branch, Emmet, Genesee, Clinton, Monroe, Isabella, Midland, Dickinson, Antrim, Oceana, Baraga, Otsego, Clare, Ontonagon, Benzie, Lake, Gladwin , Montcalm, Menominee, Gratiot and Crawford.
  • Level B (20 to 40 cases per million), 10 counties: Mason, Iron, Muskegon, Arenac, Charlevoix, Oscoda, Montmorency, Chippewa, Iosco and Ogemaw.
  • Level A (7 to 20 cases per million), five departments: Manistee, Algiers, Marquette, Alcona and Delta.
  • Low (less than 7 cases per million): Luce, Schoolcraft and Wexford.

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 February 17 to 23. 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 10-16.

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

Six of Michigan’s eight MI Start regions are now at a lower risk level after three months at the highest level the state uses to assess coronavirus risk.

The Detroit, Grand Rapids, Kalamazoo, Saginaw, Traverse City and Upper Peninsula areas were downgraded from Level E to Level D last week. This leaves the Lansing and Jackson regions still at level E.

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. As of November 4, all eight MI Start regions in Michigan were at level E.

(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 date of the report.)

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 Tuesday, February 23, the state reported 1,316 new cases of coronavirus and 34 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:

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