title: [Epidemiology of influenza].
authors.forename: Y
authors.initials: Y
authors.lastname: Hirota
authors.forename: M
authors.initials: M
authors.lastname: Kaju
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology*; D015995:Prevalence; D012574:Schools