![]() ![]() ![]() Your healthcare provider will ask about your symptoms. If your symptoms are unusually severe or last longer than a few days, your healthcare provider can determine if the diarrhea is caused by something other than a virus. Some bacteria, parasites, medicines, or other medical conditions can cause similar symptoms. The illness may develop over a period of hours, or it may suddenly start with stomach cramps, vomiting, or diarrhea. When you have stomach flu, you may have one or more of the following symptoms: Food may move faster through your digestive tract. When the stomach and intestine are inflamed, they don't work as well as they should. The virus inflames the stomach and intestine. For example, you might get it by kissing or shaking hands or by sharing food, drink, or eating utensils. The virus can be spread by direct contact with an infected person. The body fluids of infected people contain the virus, sometimes even before their symptoms begin. Many different viruses can cause stomach flu, including rotaviruses, adenoviruses, and the Norwalk virus. The illness is usually brief, lasting 1 to 3 days. Stomach Flu (Viral Gastroenteritis) What is stomach flu? Stomach flu is a viral infection that affects the stomach and small intestine. ![]()
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