[Kain makes a face and nods slowly.]

I went through it myself, rather than face an inevitably gruesome demise. There were a few different ways to extract them. I was among those who were operated on as a means to remove them. If they did infect us again, we at least know what we did last time...

[Maybe they could even operate sooner, so it doesn't progress as badly, who knows. He feels slightly better about things now. He'd been so fixated on the worst, that he didn't realize they're better off now in ways.]