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What Are the Signs and Symptoms the Stomach Flu (Gastroenteritis)?
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By definition, gastroenteritis affects both the stomach and the intestines, resulting in vomiting and diarrhea.
Common stomach flu (gastroenteritis) symptoms and symptoms
More serious signs and symptoms of stomach flu (gastroenteritis)
Diarrhea is one of the leading causes of infant sickness and death. Worldwide, diarrhea accounts for 3-5 million deaths yearly for all age groups. In general, most adults and children recover after they are appropriately rehydrated.
What Causes the Stomach Flu (Gastroenteritis)?
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Gastroenteritis has many causes. Viruses and bacteria are the most common.
Viruses (Norovirus, Rotavirus, Adenoviruses, Parvoviruses, and Astroviruses)
Norovirus - Fifty to seventy percent of cases of gastroenteritis in adults are caused by noroviruses (genus Norovirus, family Caliciviridae). This virus is highly contagious and spreads rapidly. Norovirus is the most common cause of gastroenteritis in the United States.
Rotavirus - According to the CDC, "Rotavirus was also the leading cause of severe diarrhea in U.S. infants and young children before rotavirus vaccine was introduced for 2006. Prior to that, almost all children in the United States were infected with rotavirus before their 5th birthday. Each year in the United States in the pre-vaccine period, rotavirus was responsible for more than 400,000 doctor visits; more than 200,000 emergency room visits; 55,000 to 70,000 hospitalizations; and 20 to 60 deaths in children younger than 5 years of age."
Other viruses that cause gastrointestinal symptoms include:
Adenoviruses - This virus most commonly causes respiratory illness; however, other illnesses may be caused by adenoviruses and include gastroenteritis, bladder infections, and skin rashes.
Parvoviruses - The human bocavirus (HBoV), which can cause gastroenteritis belongs to the family Parvoviridae.
Astroviruses - Astrovirus infection is the third most frequent cause of gastroenteritis in infants.
Parasites and Protozoans (Giardia, Cryptosporidium)
These tiny organisms are less frequently responsible for intestinal irritation. A person may become infected with one of these by drinking contaminated water. Swimming pools are common places to come in contact with these parasites. Common parasites include
Medically Reviewed by a Doctor on 8/31/2017
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The eMedicineHealth doctors ask about Gastroenteritis (Stomach Flu):
Gastroenteritis (Stomach Flu) - Experience
Please share your experience with the stomach flu or gastroenteritis.
Gastroenteritis (Stomach Flu) - Causes
What caused your Stomach Flu?
Gastroenteritis (Stomach Flu) - Symptoms
How long did the symptoms of your gastroenteritis (stomach flu) last? Was there anything in particular that helped with pain/symptom relief?
Gastroenteritis (Stomach Flu) - Treatment
What treatment was effective for your gastroenteritis (stomach flu)?