Influenza in Canada, 1993-1994 season.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002170:Canada / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D009980:Influenza A virus / Q000145:classification; D009981:Influenza B virus / Q000145:classification; D007251:Influenza, Human / Q000453:epidemiology* / Q000382:microbiology; D007753:Laboratories; D008875:Middle Aged