<prompt> Viral gastroenteritis may be caused by all of the following in infant and young children exceptEnterovirusCoronavirusCalcivirusAdenovirus  <response>: Coronavirus may cause enteritis or colitis in neonates and infants. Calcivirus is best known for causing large, explosive diarrhea outbreaks among older children and adults. Enteric adenovirus are a common cause of viral gastroenteritis in infants and children causing mild to moderate watery winter diarrhea. Reference: Nelson textbook of pediatrics 19th edition Page 1134 1135 