I am not saying that I believe this but it is interesting and I offer this up for curezone community's thoughts...
and um...I am going to getting kooky here:
I watched a documentray last week of a self procliamed African ZULU Shaman who says that aduts in Africa have noticed that after their children get vaccinations they can't see some of the things that the adults can perceive.
for instance, the non-vaccinated adults can see aliens and alien spaceships but their children CANNOT.