State health officials reported 9,935 new COVID-19 cases Thursday, a record high that shattered the previous high of 7,899 on Oct. 31.
The state also reported 97 additional deaths, the highest since June 4 when the state reported 115.
The highest single-day death count was 191 on May 13.
The seven-day statewide positivity rate — the figure showing how rapidly the virus is spreading — was 9.1%, up from 8.5% on Wednesday, the Illinois Department of Public Health said.
The state is averaging 55 coronavirus-related deaths each day so far in November, up from 23 at the beginning of October.
As of Thursday, the state’s total case count was 447,491; deaths totaled 10,030.
Gov. J.B. Pritzker was expected to discuss the numbers at a 2:30 p.m. news conference.
COVID-19 infections have skyrocketed in the past month amid a second surge of the virus.
Thursday marked the ninth consecutive day the state has reported more than 6,000 new coronavirus cases.
As of Wednesday, all 11 of the state’s regions were operating under tighter state-imposed COVID-19 restrictions, including bans on indoor services at bars and restaurants.
Those mitigations were put in place after each region saw severe increases in positivity, ranging from a low of 10% in Regions 5 and 6 to a high of 15.7% in Region 1, which covers northwestern Illinois.