Norovirus — once known as Norwalk virus — is highly contagious and often spreads in places like schools, cruise ships and nursing homes, especially during the winter. Sometimes mistaken for a stomach flu, the virus causes bouts of vomiting and diarrhea for a few days. Outbreak in Victoria leads to 9 deaths. July 2013.
TEM of Norovirus (or Norwalk virus), Caliciviridae group. This virus is one of the leading causes of gastroenteritis in the U.S. It is characterized by nausea, difficulty swallowing, diarrhea, and abdominal pain.
Noroviruses are the most common cause of acute gastroenteritis (infection of the stomach and intestines) in the United States. Norovirus illness spreads easily and is often called stomach flu or viral gastroenteritis, People who are infected can spread it directly to other people, or can contaminate food or drinks they prepare for other people. The virus can also survive on surfaces that have been contaminated with the virus or be spread through contact with an infected person.