Officials say that raw oysters are linked to the deaths of two Chatham County, Georgia women, which are believed to have come from the Gulf of Mexico.
Coastal District Health Director, Dr. Doug Skelton says the source is still being investigated, and even knowing the source may not help authorities prevent others from becoming infected.
He says that this is a risk people take when they eat raw oysters, not something that lends itself to a recall, like the recent problems with some raw spinach.
He said the oysters were purchased from a restaurant and a retailer in the Savannah area.
The deaths are believed to have been caused by a naturally occurring marine microorganism.
It is not normally a threat to healthy people, but can cause serious illness in people whose immune systems are impaired.