Stomach Bug May 2024 Usa. Commonly called the “stomach bug” or “stomach flu,” norovirus is the leading cause of vomiting and diarrhea from acute gastroenteritis, which is inflammation of the stomach and intestines. Patients can also experience stomach pain, fever, headache and body aches.

Here’s what you need to know about how the virus spreads and what to do if you get sick. It is sometimes called the stomach flu or the stomach bug. however, norovirus illness is not related to the flu.