A touch of the 'flu.
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks; D004739:England / Q000453:epidemiology; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology*; D018357:Respiratory Syncytial Virus Infections / Q000453:epidemiology*; D014852:Wales / Q000453:epidemiology