University of Illinois system, UI Health to require employees to be vaccinated Jul 22, 2021 | coronavirus, Hospitals, Top Stories, Vaccination The University of Illinois system, as well as UI Health, will require all employees to be vaccinated for COVID-19.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.