January 11, 2021 19:12 Updated Follow The sign-up is for one person at a time. Everyone must start the process from the beginning. Related articles I am invited to sign up for the vaccine (shot) but am unable to use the link without timing out or it asks for an invitation code that I don’t have. What if I missed the appointment for my second shot? How can I get the link to sign up? Is there a necessary interval between when someone can receive the influenza vaccination and the COVID-19 vaccine? Are drive-thru vaccination (shot) appointments offered?