Mill Worker
I just had a bit of a look into general vaccine efficacy (protection) mumps, etc.
it looks like most vaccines don’t protect you 100 percent, so the touted 95 percent efficacy of for instance Pfizer against covid is not bad at all.
if you have the vaccine, another benefit is that if you do catch the disease, you are also a whole lot less likely to be able to pass it on.
the final benefit is that if you do catch it after taking the vaccine, your chances of hospital admission is near zero.