(medicine, virology) Designating a calicivirus affecting humans, characterized by severe vomiting and diarrhea.

A city in Los Angeles County, California, United States. / A city in Fairfield County, Connecticut, United States. / A river in Connecticut, United States. / A city in Warren County, Iowa, United States.

Any of several virus strains in genus Norovirus that cause acute gastrointestinal infection. / The disease caused by the virus.

plural of Norwalk virus