"Not once you reach the 'in bed, dying' stage," Harry said. "Especially not without a stage of 'in bed, getting better'."
Now that was really interesting. And possibly troubling. It would probably be interesting, in the Chinese curse sense, to see what Directer Fury's (or his representative's) reaction would be once they got to the administrative offices Harry was steering them toward. "We'll add it to the pile of 'things I'd like to know the answer to'. It also unfortunately means you'll get a firsthand look at modern medicine, since I'd bet the doctors would love to know how, exactly, that happened."
Well, unless they just decided William was crazy, but Harry suspected that nothing was too crazy after a while. Which was his kind of situation, to be honest.