Stomach Bug Going Around Today 2024. Norovirus, the highly contagious stomach bug that causes vomiting and diarrhea, is still spreading in the united states. Gastroenteritis can be caused by viruses, most commonly norovirus, bacteria and parasites.

Norovirus symptoms typically include diarrhea, vomiting, nausea and stomach pain. Norovirus, also called the winter vomiting bug, is a stomach bug that causes vomiting and diarrhoea.