I agree that people shouldn't be forced to have the vaccine (or any medical treatment they don't want to have), but as the pandemic is such a massive threat to all of us, I think that it is fair to insist that anyone wanting to mix in society should not be allowed to do so unless they are immunised.
Education is the best way forward, but if people still refuse, I think that they should not be allowed to go to shops, pubs, concerts, school gates and so on - basically anywhere where they could infect other people. Quite how this could be policed, however, I'm not sure, as the unvaccinated won't stand out in a crowd
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I also think that there should be a stamp on the passports of those who have had the vaccine, so that refuseniks can be refused entry into countries who choose not to allow potential spreaders to cross their borders (as I hope the UK would do too).
None of this would apply to people who have medical exemption in the form of an official certificate signed by a qualified and registered doctor.