Detailed a little below while I totally brainstorm on Terra buuuut once the thing gets fully into affect it'll pretty much be like an intense depression spiral for Cam. He's gonna get to a bad place and probably not realize what's going on with others because he'll convince himself it's just his own fault.

. . . So naturally people not affected/affected later might have to help him out with that. Especially if he DOES trigger a dark digivolution.