Actually, they do. They refold normal proteins into more versions of themselves. I went and checked after this. https://en.wikipedia.org/wiki/Prion#Prion_repli

Actually, they do. They refold normal proteins into more versions of themselves. I went and checked after this. https://en.wikipedia.org/wiki/Prion#Prion_replication https://en.wikipedia.org/wiki/Prion#Prion_replication There is a complex dependence on forming fibres that makes them slow (long lead time to symptoms) and then fast (dead soon after getting sick).