Considering how hard it has been to clense against prions, this is very encouraging. I find it interesting that we struggle to decontaminate materials because of their resistance, but we might be able to train the body to deal with them.
PF?? Intuition says our immune system isn't equipped to detect them (note how odourless/tasteless) but you make me wonder if we might evolve bacteria/archae to sense them, as a first milestone..