title: As H7N9 spreads in China, experts watch and wait.
authors.forename: Ted
authors.initials: T
authors.lastname: Alcorn
mesh_terms: D000369:Aged, 80 and over; D002681:China; D004196:Disease Outbreaks / Q000517:prevention & control; D006801:Humans; D009980:Influenza A virus; D007251:Influenza, Human / Q000517:prevention & control / Q000821:virology; D008297:Male; D011159:Population Surveillance; D011634:Public Health