Your telling me violently throwing a mouse to the ground crushing its internals is more humane then freezing? I think most people would disagree. Second you are basing all of this on the fact that you are comparing a snake's ability to handle foreign gut pathogens to that of humans. This is completely unrealistic from both an ecological and evolutionary point of view. Not to mention without actual proof you can not say that this product has any more or less parasite load than any other frozen thawed food source. Finally that is not the definition of virulence, it nothing to do with the amount bacteria but the severity of the disease it causes.