Influenza in Canada--2004-2005 season.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002170:Canada / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D006760:Hospitalization; D006801:Humans; D007223:Infant; D053122:Influenza A Virus, H3N2 Subtype; D009980:Influenza A virus; D009981:Influenza B virus; D007251:Influenza, Human / Q000453:epidemiology*; D008875:Middle Aged; D012621:Seasons; D018571:Sentinel Surveillance