It's especially likely to spread among people in confined spaces. Norovirus infection can sweep through families and communities. Both children and adults are affected by noroviruses, the most common cause of foodborne illness worldwide. Many viruses can cause gastroenteritis, including: You may also be likely to get gastroenteritis if you share utensils, towels or food with someone who has one of the viruses that cause the condition. You're most likely to get viral gastroenteritis when you eat or drink contaminated food or water.

Is unusually sleepy, drowsy or unresponsive.Has a sunken soft spot (fontanel) on the top of his or her head.Babies vomit for a variety of reasons, many of which may require medical attention.Ĭall your baby's doctor right away if your baby: If you have an infant, remember that while spitting up may be an everyday occurrence for your baby, vomiting is not. Seems dehydrated - watch for signs of dehydration in sick infants and children by comparing how much they drink and urinate with how much is normal for them, and watching for signs such as a dry mouth, thirst and crying without tears.Has a fever of 102 F (38.9 C) or higher.See your child's health care provider right away if your child: You notice blood in your bowel movements.

You're dehydrated - signs of dehydration include excessive thirst, dry mouth, deep yellow urine or little or no urine, and severe weakness, dizziness or lightheadedness.

You've been vomiting or having diarrhea for more than two days.

You're not able to keep liquids down for 24 hours.

If you're an adult, call your health care provider if: Symptoms usually last just a day or two, but occasionally they may last up to 14 days.īecause the symptoms are similar, it's easy to confuse viral diarrhea with diarrhea caused by bacteria, such as Clostridioides difficile, salmonella and Escherichia coli, or parasites, such as giardia.

Watery, usually nonbloody diarrhea - bloody diarrhea usually means you have a different, more severe infectionĭepending on the cause, viral gastroenteritis symptoms may appear within 1-3 days after you're infected and can range from mild to severe.

Gastroenteritis, on the other hand, attacks your intestines, causing signs and symptoms such as: The flu (influenza) affects only your respiratory system - your nose, throat and lungs. Viral gastroenteritis is an inflammation of these organs caused by a virus.Īlthough it's commonly called stomach flu, gastroenteritis isn't the same as influenza. The stomach, small intestine and large intestine (colon) are part of your digestive tract, which processes the foods you eat.

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