Caliciviridae

(kă-lis″ĭ-vir′ĭ-dē″)

[calix + virus + -idae, fr. the cuplike appearance of viral particles under an electron microscope]
A family of positive-stranded RNA viruses that have numerous cup-shaped depressions on the surface, including the Noroviruses (a member of which is Norwalk virus, a common cause of diarrhea in humans).
SEE: Astroviridae; SEE: Calicivirus