Comment by AlexandrB

I don't know if there's a catchy name for it, but if you spend a lifetime in an environment where many serious diseases have been eradicated or nearly eradicated by vaccines it's easy to start to believe that the vaccines do nothing. This is true of so many other things as well - people take norms that make their life possible/livable for granted until they're gone.

I don't really see a solution here. It just seems like human nature.