Vaccinations seem to affect the brain in many way, I believe this is another way.

Two pieces of evidence that vaccinations harm psychic abilities:

1. From Credo Mutwa, Zulu shaman:

"We were told that there was a great smallpox epidemic coming to the land and all the children must be vaccinated. My grandfather used to say that the white man’s vaccination makes you blind and if you are to look after the cattle you must not go to the trading store to get your vaccination. Inspectors used to come and check each child for signs of vaccination. Our grandmother used to give us great pain in order to save our spiritual eyes. Grains of maize would be heated up and pushed against the skin of the child, and so when the schools inspectors came he saw the blisters and assumed the child had been vaccinated…and I noticed that school children in mission schools who had been vaccinated for smallpox or measles could not see spiritual entities at all. A flying saucer would fly through the sky at great speed and be seen by many men & women but the children who had been vaccinated would see nothing and I noticed this hundreds of times."

Credo Mutwa (the reptilian agenda video pt 1 )