Norovirus, also called stomach flu or 24-hour bug, is a highly contagious virus that can cause severe diarrhea and vomiting. There are 20 million cases of norovirus each year in the US and it is ...

"The first symptom of many patients is sudden, unexpected, explosive vomiting, and then that vomiting continues. It can be accompanied by diarrhea, and dehydration is a concern, particularly for ...

A norovirus outbreak on a luxury Cunard cruise ship left almost 200 people sick, causing symptoms like diarrhea and vomiting. The Centers for Disease Control and Prevention's Vessel Sanitation ...