title: Influenza in Canada: 2003-2004 season.
mesh_terms: D000328:Adult; D000818:Animals; D002170:Canada; D002645:Chickens / Q000821:virology; D002648:Child; D006801:Humans; D009980:Influenza A virus; D009981:Influenza B virus; D005585:Influenza in Birds / Q000453:epidemiology; D007251:Influenza, Human / Q000453:epidemiology*