No idea about the disease, what opt out means.
Very disturbing to see among conservatives.
What is more disturbing is watching FR members support mandates that impinge on parental rights. You must be a big fan of the Obamacare mandates.
As I recall it, the vaccine was already being administered, but it is very expensive. By mandating it, it reduced the cost to a minimum. It caused some bad effects in some - as almost all vaccines do - so it created an uproar and was dropped.
The parents were allowed to sign papers to opt out of it if they didn’t want their daughter to get it.