<prompt> All are true about Norwalk virus except -Belongs to calciviridaeCultivated in cell cultureCauses gasteroenteritisIs a RNA virus  <response>: Ans. is b i.e., Cultivated in cell culture Most calciviruses and astroviruses can be grown in cell culture, but the Norwalk viruses cannoto Norwalk virus belongs to family calciviridae RNA viruses and genus Noroviruses.o Norwalk virus causes outbreast of gastroenteritis from a common source of contamination water, shellfish, salad. 