title: Comparing severity and outcomes for seasonal and 2009 H1N1 infections.
authors.forename: Amesh A
authors.initials: AA
authors.lastname: Adalja
mesh_terms: D006760:Hospitalization / Q000706:statistics & numerical data; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype / Q000472:pathogenicity*; D053122:Influenza A Virus, H3N2 Subtype / Q000472:pathogenicity*; D007251:Influenza, Human / Q000150:complications* / Q000453:epidemiology; D058873:Pandemics; D012720:Severity of Illness Index; D014481:United States / Q000453:epidemiology