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Explore overview, symptoms, causes, treatment, diagnosis, prevention, and FAQ articles for this condition.
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What is Norovirus infection
Norovirus infection is an acute viral infection of the gastrointestinal tract, caused by noroviruses, a group of highly contagious RNA viruses. The condition primarily affects the small intestine and, to a lesser extent, the stomach, disrupting normal digestion and absorption by…
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Causes of Norovirus infection
Norovirus infection is caused by exposure to norovirus particles, usually through contaminated food, water, surfaces, or direct contact with an infected person. The infection develops when the virus enters the gastrointestinal tract, survives the acidic environment of the stomach, attaches to…
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Diagnosis of Norovirus infection
Norovirus infection is usually identified through a combination of clinical assessment and, when needed, laboratory confirmation. In many cases, the diagnosis begins with the pattern of illness: a sudden onset of vomiting, diarrhea, nausea, and abdominal cramps, often in the setting…
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Symptoms of Norovirus infection
What are the symptoms of Norovirus infection? The illness usually begins abruptly with nausea, vomiting, watery diarrhea, stomach cramps, and a general feeling of weakness or malaise. Some people also develop low-grade fever, headache, muscle aches, and chills. These symptoms arise…
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Treatment for Norovirus infection
The treatment of norovirus infection is mainly supportive. There is no routine antiviral drug that directly eliminates the virus, so management centers on replacing fluid losses, controlling vomiting and diarrhea, and maintaining normal physiologic function until the immune system clears the…
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Prevention of Norovirus infection
Norovirus infection can be prevented in some circumstances, but not with absolute certainty in every setting. The virus is highly contagious, spreads efficiently through tiny amounts of fecal or vomit contamination, and can remain infectious on surfaces for extended periods. For…
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FAQ about Norovirus infection
Norovirus infection is one of the most common causes of sudden gastroenteritis, often called the “stomach flu” even though it is not related to influenza. This FAQ explains what norovirus is, how it spreads, what symptoms it causes, how doctors diagnose…