Over one-quarter of Illinois counties in ‘warning’ zone for COVID-19 Jul 26, 2021 | coronavirus, Top Stories, Vaccination Twenty-six of the state’s 102 counties are in the “warning” zone for increased COVID-19 activity, according to the Illinois Department of Public Health.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.