I'm just an uneducated idiot. I can't believe I posted here earlier about side effects to the rabies vaccine. Omfg.
Also, I read a book ages ago, something about the guy developing the vaccine and it had to do with horses. Does it ring a bell? I'd like to reread it but don't remember the name of it.
I think it was his account of the journey of developing it, his observations of the lab animals.