Small round structured viruses (SRSV).
D017250:Caliciviridae Infections / Q000175:diagnosis / Q000453:epidemiology*; D004196:Disease Outbreaks / Q000706:statistics & numerical data*; D004739:England / Q000453:epidemiology; D005759:Gastroenteritis / Q000175:diagnosis; D006801:Humans; D009663:Norwalk virus; D015995:Prevalence; D012621:Seasons; D014852:Wales / Q000453:epidemiology