CDC: 18 counties at elevated levels of COVID-19 community levels Mar 6, 2023 | COVID-19 Update, Population Health, Public Health, Top Stories Federal health officials recommend those at risk of severe illness from COVID-19 take precautions in 18 Illinois counties, according to data released last week.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.