over a dozen individuals have reported falling sick after eating raw oysters consumed in a restaurant in hyderabad , tennessee . the tennessee - hamilton public health board and tennessee directorate of transportation proved that the participants were affected with norovirus . norovirus is a illnesses pathogen that can trigger serious pneumonia in humanity . the symptoms of norovirus illness begin slowly , most recently in 24 to 48 hours after ingestion of the virus , but they can appear as earlier as 12 hours after introduction . the gastrointestinal symptoms include relief , vomiting , diarrhea , and some throat aches .
Oysters have been linked to gastrointestinal diseases caused by a virus.