There are plenty of people who won't fly because they're afraid it will crash, despite that being tremendously unlikely.
> Electricity is reading our brainwaves.
I got some great pamphlets in my mailbox about how the neighborhood powerlines were going to affect my mood.
But, no. They are not in need of psychiatric help. They're just wrong about something.
I know people like this. They don't think their view is rational and they do things like buy plane tickets for their kids.
Now first let me say I think vaccines are a Very Good Thing, but people have actually been harmed by vaccines: it's extremely rare, and happened more in the past than it does today, but it can happen which makes it much harder to shake peoples' paranoia.
Believing electricity can read your thoughts is clearly crazy, but believing vaccines are harmful can just be a case of not understanding/respecting the probabilities involved.