If you’ve been vaccinated you are covered from serious illness or death, isn’t that what we’ve been told ever since the vaccines were approved?
There’s a multitude of illnesses, some more severe than others, that can be passed from one person to the next and we don’t have the right to demand to see other people’s medical records for these illnesses.
At some point each and every one of us is going to have to take control of our own levels of risk. If you are vaccinated and still scared of travelling just incase you may come into contact with an unvaccinated person, then you are going to have to deal with that, or not travel.