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Norovirus is a highly contagious virus that causes stomach illness, often called the “stomach flu.” It spreads quickly through contaminated food, water, surfaces, or close contact with infected people. Although it is sometimes mistaken for the flu, norovirus is not related to influenza.
Common Symptoms of Norovirus
Symptoms usually appear 12 to 48 hours after exposure and may include:
- Nausea
- Vomiting
- Diarrhea
- Stomach cramps
- Fever
- Headache
- Body aches
Most people recover within 1 to 3 days, but dehydration can become serious, especially in children and older adults.
How Does Norovirus Spread?
Norovirus spreads very easily. You can catch it by:
- Eating contaminated food
- Drinking contaminated water
- Touching infected surfaces
- Sharing utensils or drinks
- Being around someone who is sick
Outbreaks often happen in schools, restaurants, cruise ships, nursing homes, and other crowded places.
How to Prevent Norovirus
The best way to avoid norovirus is through good hygiene practices:
- Wash hands thoroughly with soap and water
- Disinfect surfaces regularly
- Wash fruits and vegetables carefully
- Avoid preparing food while sick
- Stay home for at least 48 hours after symptoms stop
Alcohol-based hand sanitizer may help, but soap and water work best against norovirus.
When to See a Doctor
Most cases improve without medical treatment. However, seek medical care if you experience:
- Severe dehydration
- High fever
- Bloody diarrhea
- Symptoms lasting more than a few days
Young children, seniors, and people with weakened immune systems should be monitored closely.
Final Thoughts
Norovirus is one of the most common causes of stomach illness worldwide. While it spreads quickly, proper handwashing and sanitation can greatly reduce the risk of infection. Knowing the symptoms and prevention methods can help keep you and your family healthy.
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