Michael didn't really want to admit that he didn't know much more than the others. He pinned it on himself to be the expert on his own illness, but it wasn't that easy. All he'd decided so far was that it was either not an airbourne virus, he was no longer contagious, or there was a possibility of being immune. One of those had to be fact. He'd spent time with Kevin, certainly, but he hadn't spent time with Dean, and he was sure Dean and Kevin weren't close enough to have somehow spread it without it getting to anyone else-
"They're working on it at the Ministry," Michael said, even though he knew they probably both knew that. "But there must be something, there must be, people have been in and out of here and none of them are in there-" he gestured to the rest of the hospital wing beyond their door. "I just don't know how I got it. I haven't been to Spain this year. I didn't go anywhere this summer, neither did my parents, so- so I don't know how-" If he was going to be blamed he at least wanted to have good reason.
His attention turned back to Kevin, who clearly needed some more comfort, holding him tighter and stroking his hand up and down his back. "I mean, it's just not possible to change our whole genetic structure, is it?" Michael asked, though he'd allow it as a rhetorical question. "It's our blood, it's- you know?"