DPH: 1,772 COVID-19 cases, 18 more deaths in Illinois Ryan Voyles 4 years ago There were 1,772 new cases of COVID-19 reported in Illinois on Thursday, the highest single-day number in over two months.To access this content, you must purchase 1 Year Health News Illinois Subscription or 1 Year Group Subscription - Up to 5 Users, or log in if you are a member.