Interesting- thanks for taking the time to increase my knowledge. Perhaps I've had just enough information to make me worry about it and not enough to know better. I wonder if this is also the case with other prion thoughts- It's not the only reason that I avoid meat, but the thought really does bother me that, given (what I understand to be) the US's lousy meat inspection and meat industry practices (like feeding downed animals to healthy ones), there's a possibility that livestock nationwide could get silently infected with prions that cause CJD or something like that and get distributed across and eaten by a large portion of the population before anyone realized anything was wrong. Suddenly people's brains everywhere start going haywire. Is that possible? Unlikely?