Noroviruses (previously called Norwalk-like viruses or SRSVs) are a group of viruses that cause acute gastroenteritis in humans, often referred to as "stomach flu." However, norovirus is completely unrelated to influenza, a respiratory virus.

Norovirus is spread very easily from person to person. To learn how to properly clean up after someone vomits or has diarrhea, watch the following video.

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Last Revised: October 11, 2019