Gastroenteritis is inflammation of the stomach and intestines, which leads to diarrhea and vomiting. Gastroenteritis is most often due to a bacterial or viral infection. Gastroenteritis that results from a virus is called viral gastroenteritis. Many different viruses cause gastroenteritis, including some rotaviruses, noroviruses, and adenoviruses. Viral gastroenteritis is contagious. Bacterial gastroenteritis is often caused by infection with E. coli and salmonella. Other causes of gastroenteritis include parasite infection, exposure to harmful chemicals in seafood or water, use of certain medications, and irritation from particular foods. Follow the links below to find WebMD's comprehensive coverage about how gastroenteritis develops, what the symptoms are, how to treat it, and much more.
Stomach flu isn’t really a ‘flu.’ It’s gastroenteritis and can be caused by bacteria, a virus, or a parasite.
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