Before praising the vaccines for something they may or may not have done, I suggest that you look at the history of deaths before and after they were implemented, you will find that the death toll was decreasing before they were even approved, and that the death rate didn't even drop faster after they were implemented, instead it was more of a steady decrease, and also the pharmaceutical companies even state that vaccines are no guaranty to prevent a virus from happening, many studies have proven herd immunity to be false, and the biggest reason for the decline of deaths from these viruses are from better hygiene practices and cleaner water supplies, minus the fluoride of course, and the gradual immunity that happens after people get exposed.
You should ask why the black plague stopped along with Scarlet fever, since there was never a vaccine for any of them created?
The point I was making, is that vaccines don't actually do what they say, yet there is not a whole lot of evidence that they are the main cause of anything else either, yet there has been children that have received vaccines that have some effects, but I think it is more of a catalyst rather than the main caused reaction, and you have to see all the other things in the variables that may cause these effects, such as what kind of food they are eating and what they may contain in them, or how much other poison they are ingesting by other means.
We need to look at all evidence to know the truth, until then I can not claim vaccines do anything other than being a fraud perpetrated onto the masses. If anything, vaccines are nothing more than the modernized Snake Oil Liniment.