Norovirus infection can cause the sudden onset of severe vomiting and diarrhea. The virus is highly contagious and commonly spread through food or water that is contaminated by fecal matter during preparation. You can also be infected through close contact with an infected person.
Diarrhea, abdominal pain and vomiting typically begin 24 to 48 hours after exposure. Norovirus symptoms last one to three days, and most people recover completely without treatment. However, for some people — especially infants, older adults and people with underlying disease — vomiting and diarrhea can be severely dehydrating and require medical attention.
Norovirus infection occurs most frequently in closed and crowded environments such as hospitals, nursing homes, schools and cruise ships.
Apr. 02, 2014
- Treanor JJ. Epidemiology, clinical manifestations and diagnosis of norovirus and related viruses. http://www.uptodate.com/home. Accessed Nov. 8, 2013.
- Blacklow MR. Epidemiology of viral gastroenteritis in adults. http://www.uptodate.com/home. Accessed Nov. 8, 2013.
- Goldman L, et al. Goldman's Cecil Medicine. 24th ed. Philadelphia, Pa.: Saunders Elsevier; 2012. http://www.mdconsult.com/das/book/body/191371208-2/0/1492/0.html#. Accessed Nov. 8, 2013.
- Payne DC, et al. Norovirus and medically attended gastroenteritis in U.S. children. The New England Journal of Medicine. 2013;368:1121.
- AskMayoExpert. What tests are needed to confirm the diagnosis of norovirus infection? Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2013.
- Alexandraki I, et al. Management of acute viral gastroenteritis in adults. http://www.uptodate.com/home. Accessed Nov. 8, 2013.
- Bok K, et al. Norovirus gastroenteritis in immunocompromised patients. The New England Journal of Medicine. 2012;367:2126.
- Norovirus: Technical fact sheet. Centers for Disease Control and Prevention. http://www.cdc.gov/norovirus/index.html. Accessed Nov. 8, 2013.