How to sign up for COVID-19 vaccine How to sign up for a COVID-19 vaccine (Source: WFIE) By Samantha Johnson | January 14, 2021 at 5:50 PM CST - Updated January 14 at 7:06 PM TRI-STATE (WFIE) - As COVID-19 vaccinations continue across the Tri-State, it can be difficult to keep track of who is eligible to get a vaccine and how to sign up. Recommendations can vary, depending on where you live. ILLINOIS The good news for our Illinois counties is making an appointment is as easy as making a quick phone call to your local health department, when you are eligible to get immunized.