Food Safety News: According to new work by researchers from the Netherlands, New Zealand and the U.S. Centers for Disease Control and Prevention (CDC), about 14 percent of all norovirus outbreaks are attributed to contaminated food.

Noroviruses are one of the leading causes of gastroenteritis worldwide. In the U.S., the virus causes 19-21 million illnesses, 56,000-71,000 hospitalizations and 570-800 deaths.

Determining the transmission route during an norovirus outbreak investigation is complicated because transmission can occur through multiple sources in a single outbreak. If a virus is first transmitted through food, it can continue person to person or through the environment, making it hard to trace the disease back to contaminated food.

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