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Norovirus: Symptoms, Causes & Treatment

时间:2025-10-19 15:36来源: 作者:admin 点击: 2 次
Norovirus is a common and very contagious infection that causes vomiting and diarrhea. It has similar symptoms to the stomach flu, but has a different

What are the symptoms of norovirus?

Symptoms of norovirus include:

In addition, you may also have:

Symptoms usually appear 12 to 48 hours after exposure to the virus and last one to three days.

Are norovirus symptoms the same in children and adults?

Symptoms of norovirus are usually the same in both children and adults. Adults may experience more diarrhea than children and children may vomit more than adults.

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What causes norovirus?

A virus in the Caliciviridae family causes norovirus. This virus, when it enters your body, makes your stomach and intestines swell or become inflamed. This is a condition called gastroenteritis, which leads to symptoms of norovirus.

How do you get norovirus?

You can get the norovirus infection in many ways, including through:

Close contact with someone who has the virus.

Touching contaminated surfaces and then touching your mouth or nose.

Eating or drinking contaminated foods or beverages.

Norovirus is the biggest cause of illness from contaminated food in the U.S. The virus typically spreads when someone who has the virus touches food before serving it to someone else. Sometimes, certain foods, including oysters and other seafood, are naturally contaminated with norovirus.

Is norovirus contagious?

Yes, norovirus is highly contagious, which means it spreads easily. If you have the virus, your body sheds (releases) billions of tiny virus particles that can make others ill, too. It only takes a few particles to make someone else sick.

After you come into contact with norovirus, it can take 12 to 48 hours before you start to show symptoms. This amount of time before you get sick is called an incubation period. After your symptoms stop, you’re still contagious for up to 48 hours.

What are the risk factors for norovirus?

Anyone can get norovirus. You’re more likely to get norovirus if:

You come into contact with someone who has the virus.

Your genes make you more likely to develop symptoms (genetic susceptibility).

What are the complications of norovirus?

If you have norovirus, you’ll feel very sick. This can cause you to throw up and have diarrhea. When you’re unable to keep nutrients in your body, you’re at risk of dehydration. Symptoms of dehydration include:

Children may have the above symptoms, along with:

Crying without tears.

Fussiness.

Sleepiness throughout the day.

Norovirus can make it difficult for you to eat or drink because the inflammation in your intestines and stomach causes you to vomit or have diarrhea. You still need to make an effort to eat and drink. You can do this by eating and drinking more often throughout the day, eating slowly and taking small bites or taking little sips of fluids. If you eat too quickly or too much, your body may reject the food intake.

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