Oh yes they do..
Vaccines have been used as control to hide the toxic effect of the new vaccines..

Otherwise talk to the hand.
While you are at it. show me the vax v unvxed study, yea that's right, the one they refuse to do because they already know the answer. However every non pharma vax / unxaxed study clearly show that the unvaccinated are far healthier, that is exactly what doctors are now observing for themselves.. Science, you clearly do not know the meaning of the word, so don't waste my time with junk