title: 2009 H1N1 influenza virus seroepidemiology.
authors.forename: Viroj
authors.initials: V
authors.lastname: Wiwanitkit
mesh_terms: D000367:Age Factors; D000368:Aged; D000914:Antibodies, Viral / Q000097:blood / Q000276:immunology*; D004196:Disease Outbreaks; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype / Q000276:immunology* / Q000472:pathogenicity; D007251:Influenza, Human / Q000097:blood / Q000175:diagnosis* / Q000276:immunology*; D007492:Iran; D016036:Seroepidemiologic Studies
chemical_list: D000914:Antibodies, Viral