It should be noted there are certain dangers associated with eating uncooked Gulf Coast oysters. These oysters are contaminated with Vibrio vulnificus bacteria. Vibrio vulnificus thrive in the warm waters of the Gulf of Mexico and the Atlantic Coast of Florida, where the bacteria occur naturally. Vibrio vulnificus septicemia is a blood infection that comes as a result of ingesting raw oysters that contain this bacteria. Side effects of the blood sickness can range from symptoms as mild as an upset stomach to fatality, depending on the amount ingested and the body's ability to fight off the bacteria.
People suffering from Vibrio vulnificus septicemia are contagious for up to seven days after contracting the sickness, since it stays in their stool. According to the FDA, about 50-60 people in the U.S. are infected with the blood illness annually. Of these, approximately half of them die.