*Interpretation Notes for Charts and Tables

Information in these charts is provisional and subject to change.

Recovered note: Recovery for mild to moderate illness is defined as no fever for over 24 hours and improving symptoms and at least 10 days since symptoms started or since the first positive test.

Use care interpreting charts and tables. Numbers for recent days and weeks may look low for several reasons, including pending test results or delayed symptom onset information. Numbers are updated at the start of the following week.

Reports of positive cases to the health department from testing institutions may be delayed by a day or more. Due to this, the current day has been excluded from the New COVID-19 Cases Reported per Day chart.

Due to a backlog of test results, counts of cases reported on 3/31 (purple) were abnormally elevated. This number has been changed to reflect the average diagnoses per day of that week (43 cases). The true number of reported cases on 3/31 was 90.

Washtenaw Count Health Department does contact investigations for with every confirmed and probable case. For a small number of cases, in the event that an individual could not be contacted or could not respond follow-up, symptom onset date is estimated.

Total cases include: Outpatient, Hospitalized, Deceased, and Recovered individuals.

Confirmed cases: Individuals who have been tested and received a laboratory-confirmed positive result.

Probable cases: Individuals that have been directly linked or in close contact to a confirmed case, have symptoms consistent with COVID-19, but did not have confirmatory testing.