Send a comment on this item to LII: Send a comment on this item to LII staff, who on weekdays will usually reply within 24 hours. Viral Gastroenteritis Answers to frequently asked questions about this ailment, which is caused by such viruses as rotaviruses, adenoviruses, caliciviruses, astroviruses, and a group of Noroviruses (including the Norwalk virus). Describes how it is spread and how it is treated. From the Centers for Disease Control and Prevention (CDC). http://www.cdc.gov/ncidod/dvrd/revb/gastro/faq.htm Asterisk * indicates required field. Your Name Your Email Address * We will not sell or provide your email address to anyone else. Comment * Enter the verification code as it is shown in the box below. This helps prevent automated submissions. *