Stomach Flu In 2024. In this case, a virus causes the stomach flu, and when you come down with the stomach flu, the symptoms are hard to miss. The stomach flu (norovirus) is an acute form of gastroenteritis, or inflamed stomach or intestinal lining caused by a virus, bacteria or parasite.

Outbreaks surged this winter after the holidays, but cases of the nasty. Encountering the discomfort of food poisoning or stomach flu can be confusing due to their overlapping symptoms.