title: Antigenic variation of recent influenza A(H3N2) viruses.
mesh_terms: D000328:Adult; D000368:Aged; D000818:Animals; D000940:Antigenic Variation; D000956:Antigens, Viral / Q000032:analysis*; D002648:Child; D005289:Ferrets; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D053122:Influenza A Virus, H3N2 Subtype; D009980:Influenza A virus / Q000276:immunology*
chemical_list: D000956:Antigens, Viral