While I too have a problem with requiring the vaccine, I think here in the states the parent can simply opt out by saying "our girl doesn't get it." Check the box, sign the line, walk away. If I'm wrong, I'd be more than happy to see contrary information.
I shouldn’t have to “opt out” of something. It should be “opt-in”. They only do that because they can get more ignorant parents to do the vaccination if they say it’s “required”.
In a perfect world the opt out clause would always be respected. In a perfect world no drug or vaccine would ever have adverse side effects. You may live in Utopia ,but I do not.
Merck could get richer quicker with anti obesity drugs.