Norovirus.
D017250:Caliciviridae Infections / Q000175:diagnosis / Q000453:epidemiology / Q000517:prevention & control; D004196:Disease Outbreaks / Q000517:prevention & control / Q000706:statistics & numerical data; D005511:Food Handling; D005759:Gastroenteritis / Q000175:diagnosis / Q000453:epidemiology / Q000517:prevention & control; D006235:Hand Disinfection; D006801:Humans; D017053:Infection Control; D029322:Norovirus; D006113:United Kingdom / Q000453:epidemiology