New Stomach Bug 2024. Learn how to treat it, when to. Norovirus is a contagious stomach bug that causes vomiting, diarrhea and stomach cramps.
Norovirus, a highly contagious stomach bug that causes vomiting and diarrhea, is still spreading in the u.s. Norovirus is a highly contagious virus that causes vomiting and diarrhea, also known as the stomach bug or the stomach flu.