This is the same for me. I don't have the knowledge of the cat and many others even though I have done a lot of research. Our son got some vaccines (he had a reaction to the MMR...as far as we can tell), but like you, I WILL NEVER TRUST A VACCINE ever again, as I do not trust the vaccine companies. At this point, who's to say they're not adding other crap to the vaccines that in the past did legitimately test well? Honestly, at this point, I would say that scenario is likely. I would have never thought that even a year ago.