Do not consumed uncooked oysters
Uncooked oysters may again be contaminated with water which has come in contact with a person infected with hepatitis A virus. Uncooked oysters, mussels and clam that have been harvested in polluted water can all be a potential source of hepatitis A infection. So, next time you decide to eat a shellfish or an oyster, cook it properly before consuming it. Keep this in mind when you head towards a raw bar as well.
Apart from the danger of spreading hepatitis A virus, uncooked oysters have also been blamed for the spread of Vibrio vulnificus, a type of water borne bacteria, which may lead to severe nausea and vomiting, abdominal cramps, diarrhea, fever and skin lesions.