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Norwalk virus,

highly contagious viral disease caused by infection with an RNA virus of the genus Norovirus. The virus causes acute gastroenteritis, usually one to two days after infection; typical symptoms are abdominal pain and cramps, diarrhea, vomiting, and a low-grade fever. Dehydration may result if enough liquids are not consumed to replace lost fluids. There is no treatment for norovirus, which usually lasts one to three days and does not result in severe illness, but it may become life-threatening if an infected person becomes dehydrated. Dehydration may be treated by administering fluids intravenously. A person typically remains contagious for several days after the acute illness has ended.

Norovirus is transmitted by the fecal-oral route, most commonly through person-to-person contact a result of poor hygiene or through food contaminated by an infected food preparer or handler. Ingestion of uncooked shellfish harvested from contaminated waters or of contaminated drinking water may also transmit the disease. Outbreaks most commonly occur in settings where individuals are in close quarters, such as hospitals, nursing homes, and retirement homes, vacation resorts and cruise ships, and child-care centers and schools, and spread rapidly; most epidemic viral gastroenteritis is caused by a Norovirus. The virus can persist in the environment on some surfaces for a relatively extended period of time, and is resistant to disinfection by alcohol- or detergent-based agents, but soap and water is effective in blocking the spread of the disease. The disease was first identified as result of an outbreak in a Norwalk, Ohio, elementary school in 1968.

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The pressures needed to inactivate norovirus and hepatitis A are higher than what is commercially used currently for Vibrio inactivation and may alter the meat's taste and texture somewhat.
The Ridascreen Norovirus 3rd Generation EIA assay "is for use when a number of people have simultaneously contracted gastroenteritis and there is a clear avenue for virus transmission, such as a shared location or food," according to the FDA approval announcement statement.
Friend said health inspectors from four surrounding towns visited the schools Thursday and their findings and calls to the state Department of Public Health determined the most likely cause of the absences was norovirus.
Anyone who has recently experienced the symptoms is also being asked not to visit wards at hospital as norovirus spreads quickly from person to person and it can survive for several days in a contaminated area.
We are very excited to work with Baylor on the development of anti- norovirus strategies," said Dr.
Norovirus spreads very easily in public places such as hospitals, nursing homes and schools.
Norovirus causes the inflammation of the stomach or intestines and results in nausea, stomach pain, diarrhea, and throwing up, sometimes these symptoms are also accompanied by body aches, headache or fever.
Norovirus is a highly contagious stomach illness that can cause people to have extreme vomiting or diarrhea for 24-28 hours.
Yesterday visitor restrictions will be lifted for one hour between 2pm and 3pm, on wards that have not been affected by norovirus and limited to two visitors per bed.
A WARD at Wales' largest hospital shut yesterday due to an outbreak of the winter vomiting bug norovirus.
Norovirus is the most common cause of gastroenteritis.
Yes, winter is back, and while we can all look forward to the excesses of the festive season, there's one element of the colder months that nobody enjoys: norovirus.