Look y'all, the expert has chimed in!
Well, unlike most of you, she actually is an expert in the field of infectious dieseaes.
FWIW, my older brother at 12 years old in late 1961, the year I was born, nearly died from a rare but not unheard-of complication of Mumps - Meningoencephalitis. Fell into a coma, veins collapsing, organs starting to shut down, Last Rites given. He lived and defied expectations that he might turn out a brain damaged vegetable but spent over 2 months in the hospital and getting therapy to learn to talk, walk, dress and feed himself again.
My parents, not wanting to go through that again, made sure I got all the vaccinations available when I was a kid. And I’m glad they did.