title: [Interspecies transmission of influenza A viruses and influenza pandemics].
abstract: Molecular and genetic data are summarized on the origin of influenza A virus pandemic variants. Conceptual modifications of the reassortment theory of the origin of pandemic strains are discussed in connection with the appearance of new H5 and H9 avian influenza viruses, which caused the respiratory infection in man and which are presently in the focus of attention as possible agents of future pandemic.
authors.forename: N V
authors.initials: NV
authors.lastname: Kaverin
authors.forename: Iu A
authors.initials: IuA
authors.lastname: Smirnov
mesh_terms: D000818:Animals; D001717:Birds; D004196:Disease Outbreaks / Q000662:veterinary; D014943:Global Health; D019267:Hemagglutinin Glycoproteins, Influenza Virus / Q000737:chemistry / Q000235:genetics; D006801:Humans; D009980:Influenza A virus / Q000235:genetics* / Q000276:immunology; D005585:Influenza in Birds / Q000453:epidemiology / Q000635:transmission*; D007251:Influenza, Human / Q000453:epidemiology / Q000635:transmission* / Q000662:veterinary; D017720:Molecular Epidemiology; D012367:RNA, Viral / Q000235:genetics; D016865:Reassortant Viruses; D013045:Species Specificity
chemical_list: D019267:Hemagglutinin Glycoproteins, Influenza Virus; D012367:RNA, Viral; C109963:hemagglutinin, avian influenza A virus