California Warns of Seafood Danger
Citing concerns over the domoic acid poisoning that has already sickened hundreds of birds, state health regulators in California on Friday urged people not to eat certain types of seafood — including shellfish and sardines — caught by recreational fishermen off most of the Southern California coast.
The warning also covers the organs of commercially sold lobster and crabs as well as those caught by recreational anglers.
Health officials typically issue a warning against eating mussels about May 1. Officials say they know of no one who has been sickened. But this year, regulators decided to expand the quarantine after finding high concentrations of domoic acid in some samples of other shellfish, said Lea Brooks, a spokeswoman for the California Department of Health Services.
Friday’s warning comes as hundreds of sick or dead marine birds are being washed ashore up and down the coast, their conditions linked to a particularly virulent outbreak of the naturally occurring domoic acid toxin, scientists say.
The seafood warning pertains to bivalve (two-shelled) shellfish such as oysters, clams and scallops, as well as anchovies taken off the coast of Los Angeles, Orange, San Luis Obispo, Santa Barbara and Ventura counties.
The warning applies to seafood caught from shore and boats.
The fishing season for some of the creatures covered by the warning is ending. But other species now quarantined, such as mussels and Pismo clams, are harvested throughout the year, according to state sportfishing regulations.
Domoic acid is a naturally occurring toxin that can cause humans to get sick. Dogs, cats, birds and other household pets also are susceptible to such poisoning and should not eat the seafood either, officials warned.
Friday’s warning does not apply to commercially caught bivalve shellfish, such as clams and oysters, which are sold by certified harvesters and dealers subject to frequent mandatory testing, regulators said.
State law bans people from selling clams, mussels, scallops or oysters unless they are certified commercial harvesters or dealers.
Officials advise those who eat crabs and lobsters to consume only the white meat, removing and discarding the dark-colored organs, or viscera, before cooking.
Symptoms of domoic acid poisoning can occur within 30 minutes to 24 hours after eating toxic seafood. In mild cases, they can include vomiting, diarrhea, abdominal cramps, headache and dizziness. The symptoms disappear within several days.
In severe cases, people can have difficultly breathing and experience confusion, disorientation, permanent loss of short-term memory, a coma and even death.

