Stomach Flu 2024 Canada Statistics. Gastroenteritis, also referred to as stomach flu, is inflammation of the stomach and intestinal lining, which causes diarrhea and vomiting. Find info on norovirus symptoms, causes, prevention, current outbreaks, and reporting systems.
It affects people of all ages, but it causes severe acute gastroenteritis in children under the. Symptoms include upset stomach and vomiting, followed by cramping, chills, fever and.