Gastroenteritis associated with oysters.
D000818:Animals; D017250:Caliciviridae Infections / Q000453:epidemiology* / Q000382:microbiology; D003430:Cross-Sectional Studies; D004196:Disease Outbreaks; D004739:England / Q000453:epidemiology; D005516:Food Microbiology; D005517:Foodborne Diseases / Q000453:epidemiology* / Q000382:microbiology; D006801:Humans; D015994:Incidence; D009663:Norwalk virus / Q000302:isolation & purification; D010125:Ostreidae / Q000382:microbiology*; D014852:Wales / Q000453:epidemiology