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(Stomach Flu; Stomach Bug)
by Diane W. Shannon, MD, MPH
Viral gastroenteritis is an intestinal infection.
Viral gastroenteritis is caused by one of several viruses that assault the intestines. The viruses are usually spread through contact with someone who is infected or with something an infected person touched. Viral gastroenteritis also can spread through food or water that is contaminated. Noroviruses, rotaviruses and enteric adenoviruses are the most common causes of infection.
Risk Factors TOP
Viral gastroenteritis is more common in children and child care centers, and in older adults in nursing homes.
Risk factors for viral gastroenteritis include group settings such as:
The symptoms of viral gastroenteritis usually begin between 1-2 days after you’re exposed to the virus. The illness usually lasts 1-2 days, but it can rarely last for up to 10 days.
Symptoms may include:
Vomiting and diarrhea can lead to dehydration, especially in children.
You will be asked about your symptoms and medical history. A physical exam will be done. Your doctor may also order a stool culture. This test looks for bacteria in a stool sample, which would indicate a different type of illness.
There is no specific medical treatment for viral gastroenteritis. Antibiotics are not helpful for infections caused by a virus. However, there are a number of things you can do to be more comfortable and avoid dehydration.
Call your doctor if you:
Call your doctor if your child:
To help reduce your chances of viral gastroenteritis:
Family Doctor—American Academy of Family Physicians
Centers for Disease Control and Prevention
Norovirus. Centers for Disease Control and Prevention website. Available at: https://www.cdc.gov/norovirus. Updated August 30, 2016. Accessed December 15, 2017.
Norovirus infection. EBSCO DynaMed Plus website. Available at: http://www.dynamed.com/topics/dmp~AN~T114466/Norovirus-infection. Updated July 31, 2017. Accessed December 15, 2017.
Viral gastroenteritis. National Institute of Diabetes and Digestive and Kidney Diseases website. Available at: https://www.niddk.nih.gov/health-information/digestive-diseases/viral-gastroenteritis. Accessed December 15, 2017.
Last reviewed December 2017 by EBSCO Medical Review Board Marcie L. Sidman, MD
Last Updated: 12/15/2017
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