Norovirus Topic Guide

Norovirus 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.

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