March 2, 2020 to March 3, 2020
Variables affected:
-
deathConfirmed
Tags: CTP Backfill
Surrounding days have zeros in this field, but these two days are blank for some reason.
March 5, 2020 to March 4, 2021
Variables affected:
-
negative
Tags: CTP Backfill
On March 4, 2021, we deleted the history of Negative (people or cases), because they represented negative tests, not individuals. Now that totalTestResults is not calculated from positive+negative, we do not need to duplicate negative specimens in the people field.
March 10, 2020 to March 4, 2021
Variables affected:
-
totalTestResults
Tags: CTP API / Logic Changes
On March 4, 2021, we switched Michigan's totalTestResults to be drawn from totalTestsViral instead of calculated via positive+negative. This resulted in the addition of 96,532 tests cumulatively, because the new explicit numbers include repeat positive tests.
March 10, 2020 to March 16, 2020
Variables affected:
-
negativeTestsViral -
death -
totalTestsViral -
positiveTestsViral
Tags: CTP Backfill
On March 4, 2021, we corrected an error we made in a backfill on June 11, 2021, when we forgot to paste historical data from March 10 to March 16, 2020 for Total Tests (PCR), Positive Tests (PCR), Negative Tests (PCR), and Deaths.
February 20, 2021 to February 22, 2021
Variables affected:
-
positiveCasesViral -
positive
Tags: State Anomalies
Michigan does not update their COVID-19 data on Sundays. As a result, new referrals of confirmed cases to the MDSS regularly affect the **Confirmed cases** we report on Mondays and over the weekend.
February 10, 2021
Variables affected:
-
hospitalizedCurrently -
inIcuCurrently -
onVentilatorCurrently
Tags: State / Metric No Update
On February 10, 2021, Mississippi and Michigan did not update their **Currently hospitalized**, **Currently in ICU**, or **Currently on ventilator** before the time of our daily update.
February 6, 2021
Variables affected:
-
death
Tags: State Anomalies
On February 6, 2021, Michigan posted a note on its dashboard as follows: "As a result of the most recent assessment, today’s data includes 82 additional deaths identified"
January 5, 2021
Variables affected:
-
death -
deathConfirmed -
deathProbable
Tags: State Anomalies
On January 5, 2021, Michigan noted that 215 of the deaths reported were identified through their death certificate matching process.
January 5, 2021
Variables affected:
-
death -
deathConfirmed -
deathProbable
Tags: State Anomalies
On January 5, 2021, Michigan noted that 117 of the deaths reported were a result of their tri-weekly death record review process.
January 4, 2021
Variables affected:
-
recovered
Tags: State / Metric No Update
On January 4, 2021, Michigan did not update their Recovered number after no updates over the holiday weekend.
January 2, 2021
Variables affected:
-
totalTestsAntibody -
totalTestsViral -
positiveTestsViral -
negativeTestsViral -
negative
Tags: State / Metric No Update State Data Note
On January 2, 2021, Michigan did not publish updated testing data by the time of our daily update. As a result, we were unable to update Total Antibody Tests, Total Tests (PCR), Positive Tests (PCR), Negative Tests (PCR), or Negative (People or Cases) on January 2, 2021.
January 1, 2021
Variables affected:
-
All Metrics
Tags: State / Metric No Update State Data Note
On January 1, 2021, Alaska, Connecticut, Kentucky, Louisiana, Massachusetts, Michigan, Minnesota, the Northern Mariana Islands, North Carolina, North Dakota, Ohio, South Carolina, South Dakota, Utah, and Vermont did not update their data, presumably due to the New Years holiday.
December 31, 2020
Variables affected:
-
All Metrics
Tags: State Anomalies State / Metric No Update
On December 31, 2020, Kentucky, Michigan and Rhode Island did not update their COVID-19 data due to the New Years holiday.
December 25, 2020
Variables affected:
-
All Metrics
Tags: State / Metric No Update
On December 25, 2020, Alaska, California, Connecticut, the District of Columbia, Idaho, Kansas, Louisiana, Massachusetts, Michigan, Minnesota, North Carolina, North Dakota, New Hampshire, Ohio, Rhode Island, South Carolina, South Dakota, Utah, and Vermont did not update their data due to the Christmas holiday.
December 24, 2020
Variables affected:
-
All Metrics
Tags: State / Metric No Update State Data Note
On December 24, 2020, Michigan announced on their COVID-19 page that their data would not be updated on December 24, 2020, or December 25, 2020 due to the holiday.
December 19, 2020
Variables affected:
-
death -
deathConfirmed -
deathProbable
Tags: State Anomalies
On December 19, 2020, Michigan noted that their regular reviews of death certificate data identified an additional 155 deaths. This is covered by a blanket public note for Michigan.
December 17, 2020
Variables affected:
-
death -
deathConfirmed -
deathProbable
Tags: State Anomalies
On December 17, 2020, Michigan announced that 125 of the deaths reported were older deaths identified through their tri-weekly death record review process.
December 15, 2020
Variables affected:
-
death -
deathConfirmed
Tags: State Anomalies State Data Note
On December 15, 2020, Michigan announced that 71 of the deaths reported on December 15, 2020 were previous death identified through their tri-weekly death certificate review process.
December 12, 2020
Variables affected:
-
death -
deathConfirmed
Tags: State Anomalies
On December 12, 2020, Michigan announced that 176 of the deaths reported own December 12, 2020 were older deaths identified through their regular tri-weekly death review process.
December 11, 2020
Variables affected:
-
hospitalizedCurrently -
inIcuCurrently -
onVentilatorCurrently -
recovered
Tags: State / Metric No Update
On December 11, 2020, Michigan did not update Currently hospitalized, Currently in ICU, Currently on ventilators, and recoveries.
November 29, 2020
Variables affected:
-
totalTestsViral
Tags: State / Metric No Update
On November 29, 2020, the listed states had a partial or missed update.
November 27, 2020
Variables affected:
-
All Metrics
Tags: State Data Note State Anomalies
On November 24, 2020, Michigan announced via a [press release](https://www.michigan.gov/coronavirus/0,9753,7-406-98158-545993--,00.html) that there would be no update to their data on November 26, 2020 due to Thanksgiving holiday. On November 27, 2020, the state resumed data reporting where case counts would include cases since Wednesday, November 25th, 2020. The state estimated that the average number of cases across November 26th and November 27th, 2020 would be 8,581 cases per day.
November 26, 2020
Variables affected:
-
All Metrics
Tags: State / Metric No Update
On November 26, 2020, the listed states either released partial updates or did not update their data at all.
November 26, 2020
Variables affected:
-
All Metrics
Tags: State Data Note
On November 26, 2020, Michigan released a public note projecting no updates on Christmas day and New Year's day.
November 24, 2020
Variables affected:
-
death -
deathConfirmed
Tags: State Data Note State Anomalies
On November 24, 2020, Michigan released a public note that included 51 additional deaths into the day's count due to a regular review of death certificates.
November 24, 2020
Variables affected:
-
death
Tags: State Anomalies
On November 24, 2020, Michigan noted that their regular reviews of death certificate data identified an additional 51 deaths. This is covered by a blanket public note for Michigan.
November 19, 2020
Variables affected:
-
death -
deathConfirmed
Tags: State Anomalies State Data Note
On November 19, 2020, Michigan released 61 "new" reported deaths after a routine review of deaths certificates.
November 7, 2020
Variables affected:
-
positiveTestsViral -
negativeTestsViral
On November 7, 2020, Michigan only released an update for Total PCR tests (specimens), not Positive PCR tests (specimens) or Negative PCR tests (specimens). We carried these values over.
November 6, 2020
Variables affected:
-
totalTestsAntibody -
totalTestsViral
On November 6, 2020, Michigan released two days' worth of testing data because they did not update their testing numbers the previous day.
November 5, 2020
Variables affected:
-
totalTestsAntibody -
totalTestsViral
On November 5, 2020, Michigan did not update their diagnostic or serology testing numbers.
October 27, 2020
Variables affected:
-
lastUpdateEt
On October 27, 2020, we input an incorrect timestamp for Last Update (ET). On October 29, 2020, we corrected this value.
October 30, 2020
Variables affected:
-
hospitalizedCurrently -
inIcuCurrently
As of October 30, 2020, Michigan's Currently hospitalized and Currently on ventilator metrics are sourced from the "COVID-19 Metrics..." table.
October 29, 2020
Variables affected:
-
positive
On October 29, 2020, Michigan experienced connectivity issues resulting in some cases that would have been reported tomorrow to be reported today. This is due to the fact that the state has a strict 10AM cutoff for daily data reporting. This means the daily increase in cases encompasses more than one day's worth of data.
October 28, 2020
Variables affected:
-
totalTestsAntibody -
positiveTestsAntibody -
negativeTestsAntibody
On 10/28/20, Michigan did not provide a serology testing update.
October 19, 2020
Variables affected:
-
positiveTestsViral -
positive -
negative
On 10/19, MI reported 3 days worth of data, resulting in 5000+ new cases. We added a public note.
October 18, 2020
Variables affected:
-
totalTestsViral
On 10/18, we discovered that we the dashboard reports behind the data download. The previous day, we used values from the data download, which caused some issues with the time series. We backfilled with dashboard values accordingly.
October 17, 2020
Variables affected:
-
positiveCasesViral -
totalTestsAntibody -
deathConfirmed -
death -
positive -
probableCases -
totalTestsViral
Tags: CTP Backfill CTP Backfill Mistake Correction
On 10/17 MI numbers were sourced from their data downloads instead of the dash. Backfilling 10/17 numbers from dash. They are the same as 10/16 numbers, they did not update data on 10/17
October 15, 2020
Variables affected:
-
positive
On 10/15, due to a laboratory result processing slowdown, MI released two days worth of cases.
March 1, 2020 to June 11, 2020
Variables affected:
-
probableCases
Tags: CTP Backfill New Dataset / Timeseries New Metric
Backfill Probable Cases from 3/1-6/11 using the numbers from the file MI gave us on 6/11 (we didn't have the column yet then so we couldn't stash that anywhere)
March 1, 2020 to March 16, 2020
Variables affected:
-
positive
Tags: CTP Backfill CTP Backfill Mistake Correction
Positive Cases (confirmed+probable) time series the number from 3/1-3/16 were not updated by 6/11 backfill by mistake
March 17, 2020 to June 9, 2020
Variables affected:
-
positiveCasesViral
Tags: CTP Backfill CTP Backfill Mistake Correction
Positive Cases PCR - timeseries corrections on june 9th , 59278 was duplicated on 6/9 by mistake on march 17th, a number was missed
June 12, 2020 to September 5, 2020
Variables affected:
-
positiveCasesViral -
positive -
negative -
death -
probableCases -
dateChecked -
hospitalizedCumulative -
lastUpdateTime -
negativeTestsViral -
totalTestsPeopleViral
Tags: CTP Backfill New Metric
Backfill Probable Cases from 6/12 - 7/27 from total-confirmed
September 19, 2020
On September 19, 2020, Michigan released `12 "new" reported deaths after a routine review of deaths certificates.
September 6, 2020
Variables affected:
-
lastUpdateEt
On 9/6, MI announced that they will no longer be updating their data on Sundays beginning 9/6.
August 29, 2020
Variables affected:
-
totalTestsAntibody -
totalTestsViral
On 8/29, MI updated total test counts but nothing else.
August 21, 2020
Variables affected:
-
death -
deathConfirmed
Tags: State Data Note
On August 21, 2020, Michigan released 11 "new" reported deaths after a routine review of deaths certificates.
August 20, 2020
Variables affected:
-
negativeTestsViral -
probableCases -
positiveCasesViral -
positiveTestsViral -
deathProbable -
death -
negative -
totalTestsViral -
totalTestsAntibody -
deathConfirmed -
positive
MI's update came after our scheduled publication shift. Filled in the 8/20 values.
August 12, 2020 to August 13, 2020
Variables affected:
-
dataQualityGrade
States Grades not published for 8/12-8/13
August 6, 2020
Variables affected:
-
death -
deathConfirmed
Tags: State Anomalies
On August 6, 2020, Michigan released 17 "new" reported deaths after a routine review of deaths certificates.
July 28, 2020
Variables affected:
-
death -
deathConfirmed
Tags: State Anomalies
On July 28, 2020, Michigan identified 11 additional deaths via death certificate review.
July 25, 2020
Variables affected:
-
totalTestsAntibody -
positiveTestsAntibody -
negativeTestsAntibody -
totalTestsViral -
positiveTestsViral -
negativeTestsViral -
positiveCasesViral -
totalTestsPeopleViral -
positive -
negative -
pending -
hospitalizedCurrently -
hospitalizedCumulative -
inIcuCurrently -
inIcuCumulative -
onVentilatorCurrently -
onVentilatorCumulative -
recovered -
death -
deathConfirmed -
deathProbable
Due to technical difficulties, the state of MI did not update data on 7/25, which might affect future dates.
July 21, 2020
Variables affected:
-
death -
deathConfirmed
Tags: State Anomalies
On July 21, 2020, Michigan reported 4 "new" deaths that were identified by reviewing death certificates.
July 18, 2020
Variables affected:
-
death -
deathConfirmed
Tags: State Anomalies
On July 18, 2020, Michigan reported 7 "new" deaths that were identified by reviewing death certificates.
July 11, 2020
Variables affected:
-
death -
deathConfirmed
Tags: State Anomalies
On July 11, 2020, Michigan reported 22 additional deaths that were identified via death certificate review.
July 7, 2020
Variables affected:
-
death -
deathConfirmed
Tags: State Anomalies
On July 7, 2020, Michigan reported 20 additional deaths that were identified via death certificate review.
May 23, 2020
Variables affected:
-
totalTestsAntibody
Tags: New Metric
On May 23, 2020, Michigan started reporting antibody tests separately from PCR tests. This caused the number of total tests to drop on that day; the drop is no longer visible in our data which has since been backfilled.
April 25, 2020
On April 25, 2020, the number of recovered patients in Michigan rose by about 5,000. The DOH explained that they are representing recovery as individuals who have not died due to COVID-19 more than 30 days after the infection has been detected.
April 11, 2020 to April 17, 2020
Variables affected:
-
recovered
Tags: CTP Process / Source Change
On April 11, 2020, we captured the number of "recovered" in Michigan from the number of daily ED discharged. This happened a few more times until April 17. 2020, so recovery numbers before then, should be considered unreliable.
April 9, 2020
Variables affected:
-
inIcuCurrently -
onVentilatorCurrently
Tags: New Metric
On April 9, 2020, Michigan started reporting the number of patients currently in ICU and on ventilator with COVID-19.
March 26, 2020
Variables affected:
-
totalTestsViral
Tags: New Metric
On March 26, 2020, Michigan started reporting totalTestsViral. We did not immediately begin capturing the metric as we evaluated the units.