I didn't tag into the dreamscape because I was waiting to see what happened but i'm guessing it is going to stall because Caster dropped? Anyway, Subaru is recovering from dream sickness so he isn't going to to notice the symptoms of this right away which kind of works out.

Chances are he won't willingly go to a hospital though, not wanting to alarm people with the fact he is a vampire and just the overwhelming scent of the blood in that place would be crazy for him. Which means he would probably end up in the most dramatic symptom stage. Is there going to be a public announcement regarding the virus so people realize what is going on?