Norovirus presents with seven primary symptoms typically appearing within 12-48 hours of exposure and lasting 24-72 hours. The highly contagious virus spreads through contaminated food, water, surfaces, or direct contact, causing inflammation throughout the digestive system. Understanding these symptoms aids in rapid diagnosis and appropriate patient management.
Key Points:
- Vomiting presents as an initial symptom within 12-48 hours post-exposure, persisting for 1-3 days depending on immune response and individual factors
- Abdominal cramping and pain manifest with varying severity due to digestive tract inflammation, often concurrent with nausea and vomiting
- Diarrhea or watery stools typically appear 1-3 days after viral contraction, with hydration status requiring close monitoring
- Low-grade fever generally remains below 100°F, with temperatures exceeding 102°F potentially indicating alternative diagnoses
- Chills accompanied by profuse sweating occur cyclically with fever patterns
- Headaches may present as an early symptom or develop secondary to dehydration
- Generalized body aches and weakness indicate systemic involvement, necessitating rest for recovery
Norovirus is the leading cause of vomiting and diarrhea from acute gastroenteritis among people of all ages in the United States. Norovirus is also the leading cause of foodborne illness in the United States. It causes 58% of foodborne illnesses acquired in the United States.
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