Show Norovirus is a very contagious virus that causes vomiting and diarrhea. Anyone can get infected and sick with norovirus. You can get norovirus from:
The most common symptoms are:
Protect yourself and others from norovirus:
You may hear norovirus illness be called “food poisoning,” “stomach flu,” or “stomach bug.” Noroviruses are the leading cause of foodborne illness, but other germs and chemicals can also cause foodborne illness. Norovirus illness is not related to the flu, which is caused by influenza virus. Norovirus spreads very easily and quickly in different ways.You can get norovirus by accidentally getting tiny particles of feces (poop) or vomit from an infected person in your mouth. This can happen if you
If you get norovirus illness, you can shed billions of norovirus particles that you can’t see without a microscope. Only a few norovirus particles can make other people sick. You are most contagious
However, studies have shown that you can still spread norovirus for two weeks or more after you feel better. Norovirus can easily contaminate food and water because it only takes a very small amount of virus particles to make you sick. Food and water can get contaminated with norovirus in many ways, including when:
Norovirus is the leading cause of illness and outbreaks from contaminated food in the United States. Most of these outbreaks occur in food service settings like restaurants. Infected food workers are frequently the source of outbreaks, often by touching ready-to-eat foods, such as raw fruits and vegetables, with their bare hands before serving them. However, any food served raw or handled after being cooked can become contaminated with norovirus. Recreational or drinking water can get contaminated with norovirus and make you sick or contaminate your food. This can happen:
For more information on healthy water and how water can get contaminated, visit www.cdc.gov/healthywater/. Surfaces can get contaminated with norovirus in many ways, including when:
How long can you transmit stomach flu?If you have norovirus, you're contagious from the moment your symptoms start until at least 3 days after recovery. Some people might be contagious for as long as 2 weeks after they recover. To help lower your chances of transmitting the virus to others: Wash your hands frequently, especially after using the bathroom.
How do you avoid getting the stomach flu when your family has it?The best way to prevent catching a stomach bug: thorough hand washing. Everyone in your family should wash their hands with soap and water before eating and after using the bathroom. If you have an infant, be sure to follow proper handling and disposal of dirty diapers.
How long is norovirus contagious after symptoms are gone?However, studies have shown that you can still spread norovirus for two weeks or more after you feel better. Norovirus can easily contaminate food and water because it only takes a very small amount of virus particles to make you sick.
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