I appreciate your bringing awareness to this. I think heavy metals like aluminum and mercury (which is also in vaccines) create massive signaling challenges within cells and within the nervous system as a whole. They create favorable conditions for different types of viruses and bacteria, and they seem to be strongly linked to Autism, ADHD, Alzheimers, Depression, Dementia and fibromyalgia just to name a few... And many lesser emotional/ focus issues... And, it's great living in a Country without Polio. So far as I can figure it, probably best to keep kids getting the major vaccines and slap your doctor when they suggest a flu shot. And make sure to integrate things like cilantro, spirulina and chlorella into our diets to constantly pull metals out, because this is far from our only exposure. We get them en masse through our diets, fungicides, herbicides, and most likely through home cleaners, yard sprays etc... It is what it is, so we do our best ; )