"Hello. It's nice to meet you, sir." Aziraphale was always polite to a point and while he was a little unsettled around adults and clearly in awe of their authority, he was not really a shy boy. Timid, yes, but certainly not afraid to talk. He sat cross legged on the bed, book in his lap, looking up at Gunn curiously. "Would you like to sit? There's only one chair, I'm afraid, but Barty is okay with sitting on the bed."

He had checked before when nurses came in to talk to him.

"I'm a bit sick but it's not contagious. It is bacterial but what I have, you can't catch it." Aziraphale assured Gunn, in case it was something he was worried about. He didn't want people to get concerned. He didn't say what he had, it was a little embarrassing. His bladder was infected, apparently - whatever that meant. He assumed it was something he did wrong.