The Illinois Department of Health releases new data for probable cases once a week, which can cause a single-day spike in the number of reported cases.Ĭonfirmed cases and deaths, which are widely considered to be an undercount of the true toll, are counts of individuals whose coronavirus infections were confirmed by a molecular laboratory test. The tallies on this page include cases and deaths that have been identified by public health officials as probable coronavirus patients. 6, Illinois began reporting probable cases and deaths at the county level, resulting in one-day increases for many counties. Illinois began reporting probable cases and deaths. Illinois announced many backlogged cases from earlier in the week after resolving a data processing slowdown. Illinois began including probable deaths as probable cases, resulting in a one-day increase in cases. The daily count could be artificially low because many jurisdictions did not announce new data on Labor Day. Illinois did not release new data because of the holiday. Illinois did not announce new data because of the Veterans Day holiday. Illinois did not announce new cases and deaths for the Thanksgiving holiday. Illinois did not announce new cases and deaths for the Christmas holiday.

Illinois did not announce new cases and deaths for the New Year's holiday. Illinois did not announce new cases and deaths for the Martin Luther King Jr. Illinois did not release data because of a state holiday. The Times began including death certificate data reconciled by the C.D.C., resulting in a one-day increase in total deaths.

More about reporting anomalies or changes The Times has identified reporting anomalies or methodology changes in the data.

May Day by Thom Stark