approximately a 300 participants have reported become sick after eating raw oysters consumed in a restaurant in chattanooga , tennessee . the richmond - morrison county emergency bureau and tennessee department of transportation confirmed that the patient were infected with norovirus . norovirus is a foodborne substance that can causes intense diarrhea in humans . the symptoms of norovirus illness resolve quickly , most often in 24 to 48 time after ingestion of the vaccine , but they can appear as long as 12 hours after exposure . the gastrointestinal symptoms have nausea , vomiting , diarrhea , and some teeth abdominal .
Oysters have been linked to gastrointestinal diseases caused by a virus.