[The contact, from someone who isn't Momo, is unexpected and a little bit shocking, and the fever makes his thoughts slower. He was just processing the fact that Kaworu was approaching when he feels the hand on his forehead, and he jumps. The hand feels cold.]

I-it's something that's going around the city. I don't want to kick you out, Nagisa-san, but it's contagious so you should really be careful around us...