title: The origins of pandemic influenza--lessons from the 1918 virus.
authors.affiliation: Division of Infectious Diseases and Immunology, Department of Internal Medicine, Saint Louis University, St. Louis, USA.
authors.forename: Robert B
authors.initials: RB
authors.lastname: Belshe
mesh_terms: D000818:Animals; D001717:Birds; D004196:Disease Outbreaks / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D053124:Influenza A Virus, H5N1 Subtype / Q000235:genetics* / Q000472:pathogenicity; D009980:Influenza A virus / Q000235:genetics* / Q000472:pathogenicity; D005585:Influenza in Birds / Q000635:transmission; D007251:Influenza, Human / Q000453:epidemiology / Q000266:history / Q000821:virology*; D011159:Population Surveillance; D016865:Reassortant Viruses / Q000235:genetics* / Q000472:pathogenicity; D011995:Recombination, Genetic