Pritzker confident about opening COVID-19 vaccine to all adults by May 1 Ryan Voyles 4 years ago Gov. JB Pritzker said Friday he is confident that Illinois will be able to open up COVID-19 vaccine appointments to all adults by May 1, if not sooner.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.