title: Characteristics derived from outbreaks of pandemic influenza A (H1N1) 2009 virus.
authors.forename: Wei
authors.initials: W
authors.lastname: Liu
authors.forename: Fang
authors.initials: F
authors.lastname: Tang
authors.forename: Zeng-De
authors.initials: ZD
authors.lastname: Li
authors.forename: Hong
authors.initials: H
authors.lastname: Yang
authors.forename: Wu-Chun
authors.initials: WC
authors.lastname: Cao
mesh_terms: D004196:Disease Outbreaks; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype / Q000472:pathogenicity*; D007251:Influenza, Human / Q000453:epidemiology* / Q000821:virology*