Stomach Bug Going Around April 2025. In this case, a virus causes the stomach flu, and. What norovirus isn't, however, is the stomach flu — despite what you might read or hear to the contrary.

The 2025 norovirus outbreak hitting the northeast, including nearly 70 cases now being investigated in an upstate new york college town, has health officials scrambling to. Outbreaks of norovirus, which causes vomiting and diarrhea, are on the rise.