Ah, yeah, that must be it.
Try reading the links I posted. My answers are already posted.
It was a simple question.
SD
Right now we have a mare who was bitten by a rattlesnake a few years back and got antivenin. Since then she has developed intense life threatening allergies to all required vaccinations. As a result she can not be transported or ridden off the ranch, legally.
This is what is coming to everyone who ranches or raises all livestock if this stuff isn't squelched.