Stomach Flu 2025 Symptoms. Viral gastroenteritis is an intestinal infection that includes signs and symptoms such as watery diarrhea, stomach cramps, nausea or vomiting, and. Here's what to know about symptoms, transmission and treatment.

Cases of norovirus, aka the stomach flu, continue to climb across the u.s. Given the unpleasant, and in some cases deadly, symptoms — including stomach pain, vomiting, diarrhea, weakness, and dehydration — the virus’s rise in.