Norovirus
[nor-row virus]
Norovirus is a very contagious virus that causes vomiting and diarrhea. People of all ages can get sick with norovirus. You can get norovirus if you have direct contact with someone who is sick, such as by caring for them or sharing food or utensils with them. You can also get it by eating or drinking food or water that has norovirus in it or by touching surfaces that have tiny particles of norovirus on them and then eating food tainted with norovirus or putting your fingers in your mouth. There’s no vaccine to prevent norovirus infection and no drug to treat it. Wash your hands often and follow some simple prevention tips to stay healthy.
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Key Facts
- Norovirus causes about 20 million illnesses, 109,000 hospitalizations, and 900 deaths each year in the United States.
- Most people get norovirus from having direct contact with an infected person or by eating food handled by an infected person
- Norovirus is the leading cause of foodborne illness in the United States.
- Symptoms of norovirus illness begin suddenly and usually include vomiting, diarrhea, nausea, and stomach pain.
- Infected people are contagious when they have symptoms but can also spread it a few days before and after they have symptoms.
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Prevention Tips
- Wash your hands with soap and water for at least 20 seconds. You can use alcohol-based hand sanitizers in addition to handwashing but not as a substitute for washing with soap and water.
- When preparing food, carefully rinse fruits and vegetables and thoroughly cook shellfish, such as oysters.
- Do not prepare food or provide care for others when you are sick with norovirus and for at least 2 days after you feel better.
- Immediately clean and sanitize surfaces that have diarrhea or vomit on them. Use disposable gloves to wipe up vomit or diarrhea with paper towels. Next, use a bleach-based or other approved cleanerpdf iconexternal icon on the surface, then clean the surface again with hot water and soap.
More Information
Page last reviewed: November 23, 2020
Content source: Centers for Disease Control and Prevention