WHAT YOU NEED TO KNOW: CDPH is lifting the warning about consuming sport-harvested bivalve shellfish from Santa Cruz and Santa Barbara Counties. The annual mussel quarantine remains in effect statewide.
The California Department of Public Health (CDPH) has lifted the shellfish safety notification today related to sport-harvested mussels, scallops, and clams from Santa Cruz and Santa Barbara Counties. The safety notification for Santa Cruz County issued July 18, 2024 (Monterey County warning is still in effect) was due to dangerous levels of naturally occurring paralytic shellfish poisoning (PSP) toxins.
The safety notification for Santa Barbara County issued September 26, 2024, was due to dangerous levels of naturally occurring domoic acid, also referred to as amnesic shellfish poisoning. Both of these biotoxins can cause illness or death in humans. Recent testing shows the biotoxins have decreased to safe or undetectable levels for bivalve shellfish in these areas.
This notification does not change the annual mussel quarantine, which still remains in effect. The annual quarantine prohibits the sport-harvest of mussels for human consumption and applies to all species of mussels harvested along the California coast, as well as all bays and estuaries, and will continue through at least October 31.
This warning does not apply to commercially sold clams, mussels, scallops, or oysters from approved sources. State law permits only state-certified commercial shellfish harvesters or dealers to sell these products. Shellfish sold by certified harvesters and dealers are subject to frequent mandatory testing to monitor for toxins.
Symptoms of amnesic shellfish poisoning can occur within 30 minutes to 24 hours after eating toxic seafood. In mild cases, symptoms may include vomiting, diarrhea, abdominal cramps, headache, and dizziness. These symptoms disappear within several days. In severe cases, the victim may experience trouble breathing, confusion, disorientation, cardiovascular instability, seizures, excessive bronchial secretions, permanent loss of short-term memory, coma, or death.
PSP toxins affect the nervous system, producing a tingling around the mouth and fingertips within a few minutes to a few hours after eating toxic shellfish. These symptoms are typically followed by loss of balance, lack of muscular coordination, slurred speech, and difficulty swallowing. In severe poisonings, complete muscular paralysis and death from asphyxiation can occur.
You can get the most current information on shellfish advisories and quarantines by calling CDPH’s toll-free Shellfish Information Line at (800) 553-4133 or viewing the recreational bivalve shellfish advisory interactive map. For additional information, please visit the CDPH Marine Biotoxin Monitoring web page.
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The article includes conflicting statements.
First it says “…The California Department of Public Health (CDPH) has lifted the shellfish safety notification today [25 Oct] related to sport-harvested mussels, scallops, and clams from Santa Cruz and Santa Barbara Counties…”
Then, later in the same article it says “This notification does not change the annual mussel quarantine, which still remains in effect. The annual quarantine prohibits the sport-harvest of mussels for human consumption and applies to all species of mussels harvested along the California coast, as well as all bays and estuaries, and will continue through at least October 31.”
Agreed, So confusing! I read it twice. So — they’re now safe to consume, but harvesting them is prohibited.
They should’ve just not made any public notice.