As of March 15, there have been 18,765 Cook County residents of 80 years and older who have tested positive for COVID-19, according to numbers being reported to the Illinois Department of Public Health.
There have been 584,075 residents of 80 years and older in the county who had been tested, meaning that 3.2 percent of those tested have the coronavirus. Through March 15, there have been 556,995 confirmed COVID-19 cases and 6,873 deaths from the coronavirus in Cook County.
Illinois was home to some of the first reported COVID-19 cases in the US. It has suffered numerous waves of the pandemic, which peaked in the fall of 2020. As the Midwestern hub of the US, Illinois businesses suffered greatly, including layoffs at two major airlines based in the state.
| Date | Total Tested | Total Positive | Positive % |
|---|---|---|---|
| March 15 | 10,236,601 | 556,995 | 5.4 |
| March 14 | 10,226,190 | 556,686 | 5.4 |
| March 11 | 10,172,073 | 556,224 | 5.5 |
| March 10 | 10,141,371 | 555,816 | 5.5 |
| March 9 | 10,114,338 | 555,477 | 5.5 |
| March 8 | 10,099,602 | 555,163 | 5.5 |
| March 7 | 10,088,836 | 554,917 | 5.5 |
