Everyone is talking about the need for a Covid-19 passport once people have been vaccinated. But unlike the “yellow card” for vaccination against yellow fever, there are still key things we don’t know about the covid vaccines. A yellow fever shot provides lifetime protection against yellow fever. But there are many unknowns still with covid vaccines. We still don’t know how long the vaccines will provide immunity! And each vaccine is different and will provide different levels of immunity.
The idea of a covid 19 passport that allows people to move freely once they are vaccinated, is something to work towards. There are issues of the length of immunity, privacy, and discrimination. But we need to start addressing those issues now.