Ascension to require COVID-19 vaccination Jul 29, 2021 | coronavirus, Top Stories, Vaccination Ascension will require its associates to be vaccinated for COVID-19 by early November, becoming the latest health system in Illinois to mandate the shots.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.