Two New Zealand outbreaks of norovirus gastroenteritis linked to commercially farmed oysters
Richard Wall, Nicky Dymond, Anita Bell, Craig Thornley, Hans Buik, David Cumming, Nicole Petersen
This article describes the investigation of two outbreaks of gastroenteritis, which occurred in Auckland and the Waikato during 2009. The investigations identified oysters, that had been served at two restaurants where the infected people had eaten, as the source of norovirus which caused the gastroenteritis. The oysters from both outbreaks were traced to the same growing area. The source of contamination of the oysters was a leaking sewage pipe near the growing waters, which was discovered by chance.