title: [Enhancement of surveillance is the basic for pandemic preparedness].
authors.forename: Yue-long
authors.initials: YL
authors.lastname: Shu
mesh_terms: D002681:China / Q000453:epidemiology; D004196:Disease Outbreaks / Q000517:prevention & control; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology*; D011159:Population Surveillance / Q000379:methods*