It is rare, but can be deadly. My sister in law was hospitalized with an infection in her brain (iinm).
Chicken pox is also a terrible illness. Kids suffered horribly from it and it is beyond cruel for adults to minimize it as just an itch when the vaccine is safe and effective.
I very much doubt it would be mandated if it wasn't included in the mmr. But that's just my uneducated guess.
The point is that vaccines are mandated for public health reasons. I think I made my position clear.
Now if someone feels this situation is not to that point we will just disagree.
If they want to bring up the government should stay out of this I will point out the hypocrisy this position brings up for most.