Norovirus Topic Guide
Norovirus: Infection with norovirus causes symptoms like vomiting, nausea, diarrhea, and abdominal cramping. Symptoms and signs usually begin within 12-48 hours after initial contact with the virus. The infection is self-limiting, so medical treatment is usually unnecessary. However, if the infected individual is unable to rehydrate, it may be necessary to seek medical care to avoid dehydration.
Diarrhea Diarrhea can be caused by bacterial or viral infections, parasites, intestinal diseases or conditions, reactions to medications, and food intolerance. Symptoms of diarrhea include watery stools, abdominal cramping, fever, and dehydration. Most cases of diarrhea can be treated at home. In some cases (in the elderly, small children, or those with severe or chronic medical conditions) may need to be hospitalized due to dehydration.
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