Stomach flu意思

"Stomach flu" is a colloquial term used to describe gastroenteritis, which is an inflammation of the stomach and intestines. It is typically caused by viruses, bacteria, or parasites, and can lead to symptoms such as nausea, vomiting, diarrhea, abdominal pain, and sometimes a low-grade fever. The term "flu" is often used loosely to refer to any type of illness with flu-like symptoms, but it is more specifically used to denote influenza, a respiratory illness caused by the influenza virus. Gastroenteritis is not related to influenza and is not contagious in the same way that the flu is, but it can spread through contact with contaminated surfaces or through food and water that has been infected.