[epidemic, highly communicable disease of sudden onset, caused by the epidemic gastroenteritis virus (especially Norwalk agent) which affects all age groups; infection is associated with fever, abdominal cramps, nausea, vomiting, diarrhea, and headache, one or another of which may be predominant. ( CSP )]
UMLS (CSP) C1306859 Relation/PAR: Gastrointestinal Infection