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Norovirus Infection

Medically reviewed by Drugs.com. Last updated on Jun 2, 2025.

What is a norovirus infection?

A norovirus infection is a type of foodborne illness. The virus duplicates in your intestines and causes symptoms.

What increases my risk for a norovirus infection?

What are the signs and symptoms of a norovirus infection?

Symptoms are usually worst for children younger than 5 years and adults older than 65. You may have any of the following:

How is a norovirus infection diagnosed and treated?

Your healthcare provider will ask about your symptoms and the foods you have eaten recently. Your provider will ask when you last ate, and where you were. Your provider may want to know if anyone who ate with you is also sick. Your provider will examine your abdomen and check for signs of dehydration. Dehydration can happen if you have diarrhea or are vomiting. You may need IV fluids if you become severely dehydrated. Any of the following may be used to diagnose a norovirus infection:

How can I manage a norovirus infection?

How can I prevent a norovirus infection?

Norovirus can be spread for several weeks after you start to feel better. The following can help prevent the virus from spreading:

Call your local emergency number (911 in the US) or have someone call if:

When should I seek immediate care?

When should I call my doctor?

Care Agreement

You have the right to help plan your care. Learn about your health condition and how it may be treated. Discuss treatment options with your healthcare providers to decide what care you want to receive. You always have the right to refuse treatment. The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

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Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.