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MONTEREY COUNTY, Calif- The Monterey County Health Department is advising people to avoid consuming raw or undercooked oysters (such as those that are lightly steamed, marinated, or prepared as Rockefeller).
The reported illnesses are associated with the naturally occurring bacterium Vibrio parahaemolyticus (Vibrio), which is most prevalent during summer months when water temperatures are most favorable for its growth. The majority of illnesses that occur from the consumption of raw oysters are not life-threatening to the general population, said the health department.
The symptoms are watery diarrhea, often with abdominal cramping, nausea, vomiting, fever and chills. According to the Health Department, usually these symptoms occur within 12 to 24 hours of ingestion of raw oysters and last no more than seven days.
While the Health Department strongly discourages the public from consuming raw and undercooked oysters at this time, if consumers choose to consume oysters, they should ensure the oysters are cooked thoroughly as follows.
In the shell:
- Discard oysters with shells already opened.
- Boil oysters until the shells open. Once open boil for an additional 3-5 minutes.
- Steamer - add oysters to steaming water and cook live oysters until the shells open. Once open, steam for another 4-9 minutes.
- Discard any oysters that do not open during cooking.
Shucked Oysters:
- Boil or simmer shucked oysters for at least 3 minutes or until the edges curl.
- Fry at 375 degrees for at least 3 minutes.
- Broil 3 inches from heat for 3 minutes.
- Bake at 450 degrees for 10 minutes.
For additional information on Vibrio parahaemolyticus:
