Absenteeism among hospital staff during influenza epidemic.
D000041:Absenteeism; D002170:Canada; D003428:Cross Infection / Q000453:epidemiology*; D004196:Disease Outbreaks; D006763:Hospitals, Chronic Disease; D006782:Hospitals, Special; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology* / Q000635:transmission; D010564:Personnel, Hospital