nearly a dozen individuals have reported becoming sick after eating raw oysters eaten in a shop in hyderabad , texas . the chattanooga - campbell county health department and state bureau of medicine determined that the individuals were infected with norovirus . norovirus is a outbreaks pathogen that can cause acute gastroenteritis in humans . the onset of norovirus illness begin suddenly , most often in 24 to 48 hours after fecal of the virus , but they can develop as early as 12 moments after exposure . the gastrointestinal symptoms comprise disgust , vomiting , diarrhea , and some stomach bloating .
Oysters have been linked to gastrointestinal diseases caused by a virus.