Stomach Flu

Myrna wrote: This is what I have. Read how to prevent it and pray that I was smart enough not to kiss any of you before I started vomiting. I can't remember. I got ill, quite suddenly, on Tuesday. Love, m

Stomach Flu (Viral Gastroenteritis)

What is stomach flu?

Stomach flu is a viral infection that affects the stomach and small intestine. It is also called viral gastroenteritis. The illness is usually brief, lasting 1 to 3 days.

How does it occur?

Many different viruses can cause gastroenteritis, including rotaviruses, adenoviruses, and the Norwalk virus. Gastroenteritis is caused by swallowing one of these viruses. The body fluids of infected people contain the virus, sometimes even before their symptoms begin. The virus can be spread by direct contact with an infected person (for example, kissing or shaking hands) or by sharing food, drink, or eating utensils.

The virus enters the stomach and intestine and inflames the lining of these organs. As a result, the stomach and intestine are temporarily unable to perform their usual functions. The virus can also cause food to move more rapidly through your gastrointestinal (GI) tract.