Chemicals were first used to get children into specialized hospitals. It work so well, the Satanists applied it to their enemies. As technology progressed energy weapons are used as a catalyst to speed up the process plus they can do dame on their own now a days.
When you see patterns starting to occur then you use logical thinking to solve the equation. It is one thing to have skin or walking problems based upon heredity or genes, and another thing to see the same condition happening to others that ae no related living in the same area coupe with even pets and wildlife contracting the same condition. Hope that clarifies.