Really? You can't see the pretty nasty potential of health passports? It's a huge, huge slippery slope. Are we gonna ban anyone who hasn't had the MMR vaccine too? Or any of the others that are all voluntary and often used? I expect it will happen on overseas flights, yep. I just don't see coercion as a sensible tactic. It's quite a dangerous one tbh.
You know France, Germany and Italy have made the MMR vaccine mandatory and they haven't descended into a dystopia yet, the only side effect is less kids getting killed and maimed by measles.
If uptake rates in this country continue to drop, it will likely become mandatory here, because measles outbreaks are becoming more and more common.
And the problem is, not everyone who gets a vaccine is immune, so everyone who doesn't get a vaccine is putting other people's lives at risk.