norovirus(redirected from Norwalk virus group)
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Any of a genus of caliciviruses, formerly called Norwalk viruses, that cause acute gastroenteritis.
Any Norwalk-like virus. Diarrheal outbreaks caused by norovirus infections of the gastrointestinal tract have been reported in nursing homes, schools, and cruise ships, settings in which large groups of people congregate in relatively confined spaces. See: Norwalk virus