SFGate: On Monday, New York City Mayor Bill de Blasio addressed the cases popping up in his city, including one of an otherwise healthy 22-year-old man. "Why is a 22-year-old man stable but hospitalized at this point? The one factor we know of is he is a vaper," de Blasio said. “So, we don't know of any preexisting conditions, but we do think the fact that he is a vaper is affecting this situation.”
