<prompt> The viruses causing gastroenteritis are -RotavirusNorwalk virusAdenovirusAll  <response>: Ans. is a i.e., Rotavirus; b i.e., Norwalk virus; c i.e., Adenovirus Virus causng gastroenteritis Rota virus Norwalk virus Entero virus 1 Corona virus Adeno virus 2 Calci virus 