I can’t explain it either but as jd explained , I can tell you about all the scares we took with one of my college boys we adopted and the disappointment from dr apts. I can also tell you after a few needles he can eat anything he wants. 

This stuff is prevalent enough around Missouri and Arkansas that you ask everyone at a cookout about  it before you cook.  Heck we even have a traeger smoker for just chicken to keep from contaminating.
As Mrs b says ,I as well hope you are never challenged with an illness that the modern medical cult can’t figure out or are paid to not figure it out.