Yes.

But it’s also about herd immunity. And helping to protect people who medically cannot be vaccinated. And improving the overall average health of the population.

For participation in public services like education, the only valid waiver for a vaccination should be medically-based. Not preferential. Not “moral”. Not religious. Medical. That’s it. Full stop.

Yes, since vaccines don’t generally give complete immunity. They generally make it less likely to get sick and if you do then it will be milder, often.