Daily COVID hospitalized, by mitigation periods 

Throughout the pandemic, Illinois launched various, often overlapping mitigations as the number hospitalized with COVID-19 fluctuated. (Period of stay-at-home order in light and dark beige. Periods of mask mandates in dark beige, gray and red, the latter including limits for indoor dining. Dotted line is hospitalization level when first mask mandate lifted.)

IDPH does not break out data for those hospitalized because of the virus or those admitted for other reasons who tested positive for the virus. Illinois relaxed its first mask mandate for vaccinated May 17 before ending it for everyone June 11.
Chart: Joe Mahr Source: Tribune analysis of IDPH data