["The killers." That's what Kate called the ones who were in that other realm with her-- the hunters, not the hunted. So that meant one of them showed up here too? With all the conversations today about the Admin's end goal, he can't help but feel a stab of anger at this. What better way to make it clear that the concern for their wellbeing was fake than by bringing in a murderer like that?]

Okay. [He keeps his distance, his voice even. Kate's the one who knows what they're up against; he has to defer to her on this one.] How can I help? Anything that can help to treat it, anything I need to look for to stop other people from catching it? [A chill goes down his spine, and whether it's from the weakness from earlier, the outdoor temperature, or the idea... he doesn't want to think too closely about it.] What are the symptoms?