International travel has been restricted to fully vaccinated people for quite some time. It appears that the new coronavirus variant, Omicron, is now on every continent, including Australia. Indeed, it was confirmed on Sunday that two returned travellers tested positive to this new variant and that they were fully vaccinated. 

Given it has been brought into Australia, and around the world presumably, by vaccinated people, does that mean everyone will revert once more to an unvaccinated status?

I argued in a piece back in April, quoting from the British Medical Journal, that imposing vaccine mandates and passports would be hard to justify, given that more evidence...