April 17, 2021 20:19 Updated Follow You can only sign up for one person at a time. Everyone must start the process from the beginning. Related articles What if I miss the appointment for my second shot? Are drive-thru vaccination (shot) appointments offered? How can I get the link to sign up? I have received an email inviting me to sign up for a vaccination but am unable to use the link without it timing out or asking me for an invitation code that I don’t have. Is there a necessary interval between when someone can receive the influenza vaccination and the COVID-19 vaccine?