Received: 4 August 2021
Accepted: 2 February 2022
First Online: 15 February 2022
: Research methods were performed in accordance with relevant guidelines and regulations. This study was carried out as part of a Medical Study “Modeling COVID-19 Epidemiologic Trend and Health Care Impact in Illinois” declared by IDPH on March 23, 2020. All data was collected and deidentified by IDPH as part of routine surveillance for COVID-19. The Northwestern University Institutional Review Board has ruled that this study does not constitute human subjects research.
: Not applicable.
: The authors declare that they have no competing interests.