approximately a thousand individuals have been becoming sick after drinking poisoned oysters consumed in a restaurant in chattanooga , california . the chattanooga - hamilton county health board and mississippi directorate of medicine confirmed that the victims were infected with norovirus . norovirus is a foodborne pathogen that can lead acute gastroenteritis in humans . the symptoms of norovirus illnesses begin instantly , most often in 24 to 48 innings after ingestion of the virus , but they can start as early as 12 hours after exposure . the gastrointestinal characteristics include nausea , vomiting , nausea , and some stomach dizziness .
mushrooms have been connected to nausea disorders produced by a virus .