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Also sometimes called the Norwalk virus or winter vomiting bug, norovirus is an extremely contagious virus. It is a common cause of illness outbreaks on cruise ships, where more than 90% of ...
The symptoms of a norovirus infection make it easy for people to confuse it with the flu. "The symptoms of norovirus illness usually include nausea, vomiting, diarrhea, and some stomachcramping.
“Nausea and or vomiting are usually the first symptoms of norovirus,” says infectious disease expert Amesh A. Adalja, MD, a senior scholar at the Johns Hopkins Center for Health Security.
The norovirus was originally named the "Norwalk agent" after Norwalk, Ohio, in the United States, where an outbreak of acute gastroenteritis occurred among children at Bronson Elementary School in November 1968. In 1972, electron microscopy on stored human stool samples identified a virus, which was given the name "Norwalk virus".
[2] [4] In children, rotavirus is the most common cause of severe disease. [10] In adults, norovirus and Campylobacter are common causes. [ 11 ] [ 12 ] Eating improperly prepared food, drinking contaminated water or close contact with a person who is infected can spread the disease . [ 2 ]
In 1968, an outbreak at a Norwalk elementary school (e.g. Norwalk virus) in Ohio led to stool samples again being given to volunteers and serially passaged to other people. Finally, in 1972, Kapikian and his colleagues isolated the Norwalk virus from volunteers using immune electron microscopy , a process that involves looking directly at ...
Sapovirus is a genetically diverse genus of single-stranded positive-sense RNA, non-enveloped viruses within the family Caliciviridae. [1] [2] Together with norovirus, sapoviruses are the most common cause of acute gastroenteritis (commonly called the "stomach flu" although it is not related to influenza) in humans and animals.
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