Enteric viruses in Louisiana oysters and harvest water

What is it about?

Enteric viruses are the number one causative agent of viral digestive tract infection (gastroenteritis) in humans. We investigated the occurrence of norovirus and microbial indicators of fecal contamination in oysters and the harvest waters in Louisiana Gulf Coast. Our results emphasize the need for regular monitoring of norovirus in commercial oyster harvesting areas to reduce the risk of outbreaks.

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Why is it important?

Current regulations regarding the safety of oysters rely on the levels of fecal coliforms and/or E. coli present in oyster and/or harvest waters. This study showed norovirus can be detected in oysters even when microbial indicators are low, and in compliance with the U.S. federal standards. As such, there could be a potential health risk to oyster consumers.