OK let your mind boggle. Mine's fine. Some guys stand 10,000 or 18,500 feet away (depending on whether taken from text or video) from a nuke explosion then drive off. How much ionizing radiation were they exposed to? Probably very little. I'm not sure. Over the years in their job.. who knows. From my understanding, it's the fallout and contaminated food that is dangerous. As to vaccinations, I think it's an apt analogy. You get 1 jab and never get an illness. It must have been the jab, right?
Got kids?
Travelled or live outside of the well-developed world?
Correlation doesn't imply causation, but causation DOES lead to correlation obviously.... and the reason those vaccines are done, idealistically, is because they've been proven to work.
Epidemics of non-vaccinated people wiped out entire cultures....
The only reason we don't hand out smallpox vaccines is because it's considered by health authorities around the world to be eradicated..... the last known naturally-occurring case was in 1978. At that point, vaccination is more dangerous that not vaccinating - but if smallpox were to arise again, you want to vaccinate as many people as possible to protect everyone.