title: The 'novel' influenza A(H1N1) enigma: is it a pandemic, how should we respond, what should we call it?
authors.forename: Alan W
authors.initials: AW
authors.lastname: Hampson
mesh_terms: D003140:Communicable Disease Control / Q000379:methods*; D004196:Disease Outbreaks; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype / Q000302:isolation & purification*; D007251:Influenza, Human / Q000453:epidemiology* / Q000517:prevention & control / Q000821:virology*; D008800:Mexico; D014481:United States