Norovirus (Norwalk Virus)
Noroviruses are the most common cause of acute gastroenteritis (infection of the stomach and intestines) in the United States. Norovirus illness spreads easily and is often called stomach flu or viral gastroenteritis,
People who are infected can spread it directly to other people, or can contaminate food or drinks they prepare for other people. The virus can also survive on surfaces that have been contaminated with the virus or be spread through contact with an infected person.
|Sources||Produce, shellfish, ready-to-eat foods touched by infected food workers (salads, sandwiches, ice, cookies, fruit), or any other foods contaminated with vomit or feces from an infected person|
|Incubation Period||12-48 hours|
|Symptoms||Diarrhea, vomiting, nausea,and stomach pain. Diarrhea tends to be watery and non-bloody. Diarrhea is more common in adults and vomiting is more common in children|
|Duration of Illness||1-3 days. Among young children, old adults, and hospitalized patients, it can last 4-6 days.|
|What Do I Do?||Drink plenty of fluids and get rest. If you cannot drink enough fluids to prevent dehydration, call your doctor.|
|How Do I Prevent It?|
Norovirus Infection (National Institute of Allergy and Infections Diseases)
General information on causes, symptoms, treatment, and prevention.
General information, including questions and answers, as well as information for food handlers and healthcare facilities.
Facts About Noroviruses on Cruise Ships (CDC)
Find out why norovirus outbreaks are associated with cruise ships.
Norovirus: Facts for Food Handlers (CDC)
How norovirus is spread through foods and tips for preventing its spread.