Total Tests Performed*
*Total molecular and antigen tests performed and reported electronically for testing of COVID-19 at IDPH, commercial or hospital laboratories. All numbers displayed are provisional and will change.
** Recovered cases are defined as persons with initial positive specimen collection date > 42 days who have not expired.
Recovery rate is calculated as the recovered confirmed and probable cases divided by the sum of recovered cases and deceased cases.
Information regarding the number of persons under investigation updated on ##/##/####.
The data on this site is what has been entered into Illinois' National Electronic Disease Surveillance System (I-NEDSS) data system.
The data is constantly being entered and may change as cases are investigated. Therefore, numbers may vary from other sites where data is published.
*Data shown is >5 cases per zip code which is consistent with Collection, Disclosure, and Confidentiality of Health Statistics (77 Ill. Adm. Code 1005).
It should be assumed that COVID-19 exposure can occur in every county in IL.
Zip code is zip code of residence, which may not be location of exposure.
*Native Hawaiian or Other Pacific Islander
**American Indian or Alaskan Native
Testing Change Over Time
On January 22, 2021, IDPH began including in the total case count all probable deaths reported since the beginning of the pandemic. Due to this change, all probable deaths, 1,903, have been added to the one-day, January 22, 2021, total of new cases.
Beginning November 6, 2020 and going forward, IDPH will report confirmed cases and probable cases combined. Due to this change, all probable cases previously reported separately, 7,673, have been added to the one-day, November 6, 2020 total of new cases