"Don't worry about the thing getting into your brain. It is so rare, and when it does happen, it is bad news."
I dont think that it is rare, I think it's quite possible to have brain parasites without having seizure-like symtoms. I feel crawling sensations and kicking sensations in my head ever since the infestation got worse some years ago. And it never stops, it gets worse and it is not nervous system related.