IDPH, Chicago recommend booster doses for all adults Nov 22, 2021 | coronavirus, COVID-19 Update, Top Stories, Vaccination The Illinois and Chicago health departments said Friday they will adopt federal guidelines and recommend COVID-19 vaccine boosters for all adults.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.