alt Hacker NewsPrion diseases include:
-in sheep, scrapie
-in humans, Kuru and Creutzfeldt-Jacob
-in cows, BSE ("mad cow")
-in deer, Chronic Wasting Disease (CWD)
-in cats, feline spongiform encephalopathy
Scrapie is particularly known, deadly, and long-lived. The toxin proteins can survive for a decade in soil, and infect a new host years after it emerged.
https://en.wikipedia.org/wiki/Transmissible_spongiform_encep...
They're all the same in my understanding, just named differently because they have been observed separately before any understanding about PrP existed. And yes, that means they're also all long-lived. These proteins do not decay like more useful molecules or more complex organic matter.