Genetic relatedness between the new 1977 epidemic strains (H1N1) of influenza and human influenza strains isolated between 1947 and 1957 (H1N1).
D001483:Base Sequence; D004196:Disease Outbreaks; D005814:Genes, Viral; D006389:Hemagglutinins, Viral / Q000235:genetics; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D009980:Influenza A virus / Q000235:genetics*; D007251:Influenza, Human / Q000382:microbiology*; D009439:Neuraminidase / Q000235:genetics; D009690:Nucleic Acid Conformation; D009693:Nucleic Acid Hybridization; D012367:RNA, Viral / Q000235:genetics*; D011995:Recombination, Genetic
D006389:Hemagglutinins, Viral; D012367:RNA, Viral; D009439:Neuraminidase