The Norovirus is a group of viruses
The Norovirus is a group of viruses that are important agents of diarrhea. The estimation is that 50% of all acute abdominal flu episodes are caused by these viruses. The virus is regulated in the form of an epidemic on a relatively small scale. The virus is highly contagious and affects people of all ages. Sometimes the term Norwalk virus is used, which refers to the place Norwalk where the Norovirus was first identified in 1968. Every year about 4.5 million Dutch people get abdominal flu: About half a million are caused by the Norovirus. Symptoms of a norovirus infection are vomiting and diarrhea, usually starting between 15 and 48 hours after someone receives the virus. The vomiting is violent and very sudden, it is also called projectile vomiting. In 2012, the virus became known when the attendees of a cruise ship became infected with the Norovirus.
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