How many other medications do you take, or more specifically _require your children to take_ that:
1. were invented 18 months ago, have been available for only a year, and were hurried through the FDA's processes
2. underwent limited clinical trials
3. the manufacturers and providers are immune from lawsuits
4. the effectiveness was cited as 95% 8 months ago, but has proven to be much less.
...
I'm betting that the number is 0.
One has to admit, these vaccines and their rollout is all very unusual and against normal order. People having hesitation and skepticism is actually very healthy.