The California Department of Public Health (CDPH) has issued its annual shellfish safety warning, which will be in effect from May 1. This warning applies to sport-harvested mussels along the California coast and will last until at least October 31. The purpose of this warning is to protect the public from poisoning that can result in serious illness.
The CDPH advises consumers to refrain from consuming sport-harvested mussels during this time period. However, the warning does not apply to commercially harvested shellfish that are sold in restaurants or fish markets. This is because commercial harvesters in California are certified by the CDPH and are subject to strict testing requirements to ensure the shellfish are free of toxins.
Paralytic shellfish poisoning (PSP) and domoic acid poisoning are the specific risks associated with this quarantine, which are caused by naturally occurring toxins in shellfish. Symptoms of PSP can include tingling of the lips and tongue, loss of balance, lack of coordination, slurred speech, and difficulty swallowing. In severe cases, symptoms can escalate to trouble breathing, confusion, and disorientation. If someone experiences these symptoms after consuming shellfish, it is important to seek medical attention immediately.
To reduce health risks, it is recommended that individuals avoid eating recreationally harvested mussels during the summer months from May 1 onwards. For further information about the quarantine, PSP
