Norovirus is a very contagious virus that can infect anyone. You can get it from an infected person, contaminated food or water, or by touching contaminated surfaces. The virus causes your stomach or intestines or both to get inflamed. This ...1

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Symptoms of Norovirus

Signs & Symptoms

Source: Food Safety (DHHS)2 ...

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Complications of Norovirus

Norovirus illness is usually brief in people who are otherwise healthy. Young children, the elderly, and people with other medical illnesses are most at risk for more severe or prolonged infection. ...Source: CDC3 ...

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Causes of Norovirus

Food Sources

  • Raw produce, contaminated drinking water, uncooked foods and cooked foods that are not reheated after contact with an infected food handler; shellfish from contaminated waters

Source: Food Safety (DHHS)4 ...

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Causes List for Norovirus

Some possible causes of Norovirus or similar disorders may include:5

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Types of Norovirus

Currently, there are six recognized norovirus genogroups. Three of the genogroups (GI, GII, and GIV) affect humans. More than 25 different genotypes have been identified within these three genogroups. Since 2002, variants of the GII.4 genotype have been the ...6

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Diagnosis of Norovirus

DIAGNOSIS: Norovirus infection is generally diagnosed based on symptoms. No laboratory tests have been approved by the Food and Drug Administration to guide clinical management of individual patients, but laboratory testing is used during outbreak investigations by public health agencies ...7

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Risk Factors for Norovirus

Risk for infection is present anywhere food is prepared in an unsanitary manner and may become contaminated, or where drinking water is inadequately treated. Of particular risk are “ready-to-eat” cold foods, such as sandwiches and salads. Raw shellfish ...8

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Treatments: Norovirus

TREATMENT: Supportive care is the mainstay of treatment of norovirus disease, especially oral or intravenous rehydration. Antimotility agents should be avoided in children aged <3 years, but may be a useful adjunct to rehydration in older children and adults. Antiemetic ...9

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Prevention of Norovirus

Nausea, Vomiting, and Diarrhea Cruise ship outbreaks of nausea, vomiting, and diarrhea, primarily caused by norovirus, have been reported. The best way to prevent illness is frequent handwashing with soap and water. Wash your hands before eating and after using ...10

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Research for Norovirus

CDC celebrates the work of scientists at Baylor College of Medicine in Texas, who recently developed a way to grow human norovirus in cells that line the human intestine. This is a major scientific achievement that has been more than ...11

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Names and Terminology


  • Noroviruses

Common Name of Illness

Source: Food Safety (DHHS) ...12

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  1. Source: CDC: norovirus/ index.html
  2. Source: Food Safety (DHHS): poisoning/ symptoms/ symptoms.html
  3. Source: CDC: HAI/ organisms/ organisms.html
  4. Source: Food Safety (DHHS): poisoning/ symptoms/ symptoms.html
  5. Source: Algorithmically Generated List
  6. Source: CDC: norovirus/ hcp/ clinical-overview.html
  7. Source: CDC Yellow Book 2016: travel/ yellowbook/ 2016/ infectious-diseases-related-to-travel/ norovirus
  8. ibid.
  9. ibid.
  10. Source: CDC Features: features/ cruiseshiptravel/ index.html
  11. Source: CDC: norovirus/ index.html
  12. Source: Food Safety (DHHS): poisoning/ symptoms/ symptoms.html

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Note: This site is for informational purposes only and is not medical advice. See your doctor or other qualified medical professional for all your medical needs.