[family of RNA viruses infecting a broad range of animals; most individual species are restricted to their natural hosts; they possess a characteristic six-pointed starlike shape whose surfaces have cup-shaped (chalice) indentions; transmission is by contaminated food, water, fomites, and occasionally aerosolization of secretions. ( CSP )]
UMLS (NCI) C0206413 Relation/PAR: RNA virus
Relation/CHD: Norwalk agent