A year of H1N1 influenza statistics.
D024882:Drug Resistance, Viral; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype / Q000187:drug effects; D007251:Influenza, Human / Q000188:drug therapy / Q000453:epidemiology* / Q000401:mortality; D014481:United States / Q000453:epidemiology; D014944:World Health Organization