Norovirus
Norovirus is a very contagious virus that causes gastroenteritis, often called 'stomach flu' or 'food poisoning.' It leads to inflammation of the stomach and intestines, causing sudden and unpleasant digestive symptoms. While uncomfortable, it's usually a short-lived illness.
Common symptoms
- Sudden onset of vomiting
- Watery diarrhea
- Stomach cramps or pain
- Nausea
- Low-grade fever
- Headache
- Body aches
Cause
Norovirus is caused by a group of viruses.
How common is it?
Norovirus is the leading cause of acute gastroenteritis in the U.S., causing an estimated 19-21 million illnesses annually across all ages. Children are disproportionately affected, with the highest rates in children under 5. Outbreaks are common in daycares, schools, and cruise ships.
Treatment
There's no specific medicine for norovirus. The main goal is to prevent dehydration by offering small, frequent sips of clear fluids like water, oral rehydration solutions (Pedialyte), or diluted juice. Avoid sugary drinks, which can worsen diarrhea.
Prevention
Frequent and thorough handwashing with soap and water, especially after using the bathroom and before eating or preparing food, is crucial. Disinfect contaminated surfaces with a bleach-based cleaner and avoid sharing food or utensils with someone who is sick.
See what's going around
Track Norovirus and other illnesses at your child's school in real time.
Medical disclaimer: Educational only. Always consult a healthcare provider for diagnosis and treatment.