Skip Navigation LinksSN19-008

Office of public Affairs

Contact :

Office of Public Affairs

(916) 440-7259

Shellfish Notification Lifted for Certain Shellfish from Sonoma, Marin, and Santa Barbara Counties

Date: July 23, 2019
Number: SN19-008
Contact:  Corey Egel | 916.440.7259 | CDPH Marine Biotoxin Monitoring Program

The California Department of Public Health (CDPH) lifted shellfish safety notifications today related to sport-harvested whole scallops and all clams in Sonoma, Marin, and Santa Barbara counties. The safety notifications were issued due to dangerous levels of naturally occurring paralytic shellfish poisoning (PSP) toxins that can cause illness or death. Recent testing shows PSP toxins have decreased to safe or undetectable levels.

The annual mussel quarantine remains in effect. The annual quarantine 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.

Theses warning do 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.

PSP toxins affect the central 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. For additional information, please visit the CDPH Marine Biotoxin Monitoring Web page.

Page Last Updated :