BioMed Central :A summertime peak of "winter vomiting disease": Surveillance of noroviruses in England and Wales, 1995 to 2002 Research article on the disease. http://www.biomedcentral.com/1471-2458/3/13
CDC : Noroviruses The organism is also known as Norwalk-like viruses or caliciviruses. The disease is also known as stomach flu or viral gastroenteritis. Includes cause, treatment, and prevention. http://www.cdc.gov/ncidod/dvrd/revb/gastro/norovirus.htm
Norwalk Virus Gastroenteritis: A Different Type of Foodborne Illness, HYG-5569-98 Ohio State University Extension fact sheet providing basic information on the subject. http://ohioline.osu.edu/hyg-fact/5000/5569.html
Norwalk Viruses Widespread Gastrointestinal infection are often caused by the Norwalk virus or one of its many relatives. These viruses are second only to the common cold in the occurrence of viral illnesses in the US. http://healthlink.mcw.edu/article/1031002212.html
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