Norovirus infection happens in the stomach and intestines. The stomach flu is another name for it. It spreads quickly.
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A group of viruses cause this infection. They can spread through:
The viruses can also spread by being around someone who is sick.
Any person who ingests the virus is at risk of getting this infection. It is more common in young children and older adults.
This infection is common in crowded settings such as:
You may have:
These signs often appear within 24-48 hours of getting the virus. They often last about 2-3 days.
You will be asked about your symptoms and health history. You will have a physical exam. Often, this is enough to tell if you have the infection.
You don’t need to find out which virus is causing your infection. Stool tests may be done if your doctor wants to find this out.
A norovirus infection will go away on its own. The infection is often brief and mild.
Most people will get better by resting and drinking plenty of fluids. Oral rehydration solutions can help. These can be found in most drugstores. Rarely, you may need IV fluids if you have severe dehydration.
Antibiotics are not helpful against viruses. There are no antiviral medicines or vaccines used to fight or prevent this infection.
To help lower your chance of getting noroviruses:
Centers for Disease Control and Prevention
National Institute of Allergies and Infectious Diseases
Public Health Agency of Canada
Norovirus. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/norovirus/about/overview.html. Updated July 16, 2018. Accessed July 18, 2018.
Norovirus infection. EBSCO DynaMed Plus website. Available at:http://www.dynamed.com/topics/dmp~AN~T114466/Norovirus-infection. Updated July 31, 2017. Accessed July 18, 2018.
Norovirus illness: Key facts: Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/norovirus/downloads/keyfacts.pdf. Published January 2015. Accessed July 18, 2018.
Phillips G, Tam CC, Rodrigues LC, Lopman B. Risk factors for symptomatic and asymptomatic norovirus infection in the community. Epidemiol Infect. 2010 Dec 17:1-11.
Scallan E, Hoekstra RM, et al. Foodborne illness acquired in the United States-major pathogens. Emerg Infect Dis. 2011;17(1):7-15.
Last reviewed June 2018 by James Cornell, MD Last Updated: 7/18/18