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FDA updates guidance to seafood processors after recent ciguatera poisoning

The U.S. Food and Drug Administration (FDA) issued a letter to seafood processors, advising them of recent illnesses linked to consuming fish carrying the ciguatera toxin, which has led to cases of ciguatera fish poisoning (CFP) in consumers.

The toxic fish were harvested in the Northern Gulf of Mexico, near the Flower Garden Banks National Marine Sanctuary, which is located in federal waters south of the Texas-Louisiana coastline.

FDA had considered CFP from fish in this geographical area extremely rare until recently, when several outbreaks were confirmed in Washington, D.C., and St. Louis, Mo. The illnesses were linked to fish caught near the marine sanctuary. FDA now considers CFP to be a food safety hazard that is reasonably likely to occur in grouper, snapper, and hogfish captured within 10 miles of the marine sanctuary and amberjack, barracuda and other wide-ranging species captured within 50 miles of the sanctuary.

FDA's letter urges seafood processors who purchase reef fish and other potentially ciguatoxic fish directly from fishermen to reassess their current hazard analyses and update their Hazard Analysis Critical Control Point (HACCP) plans as necessary. FDA's seafood HACCP regulation requires processors to have and implement written plans to control food safety hazards. This updated information differs from what is currently listed in FDA's Fish & Fisheries Products Hazards & Controls Guidance, Third Edition.

Ciguatera poisoning is caused by the consumption of tropical reef fish that have assimilated ciguatoxins through the marine food chain from toxic microscopic algae. The toxins that cause ciguatera cannot be destroyed by cooking or freezing, and toxic fish do not look or taste differently from nontoxic fish. The only way to detect CFP is through laboratory testing.

Symptoms of ciguatera poisoning include nausea, vomiting; diarrhea; numbness and tingling of the mouth, hands or feet; joint pain; muscle pain; headache; reversal of hot and cold sensation (such that cold objects feel hot and vice versa); sensitivity to temperature changes; vertigo, and muscular weakness. There also can be cardiovascular problems, including irregular heartbeat and reduced blood pressure. Symptoms usually appear within hours after eating a toxic fish and go away within a few weeks. However, in some cases, neurological symptoms can last for months to years. There is no antidote for CFP; symptoms can be treated most effectively if diagnosed by a doctor with 72 hours. CFP is rarely fatal.

If you think you may have ciguatera poisoning, report your symptoms and what fish you ate to your doctor, local emergency room or health department. If possible, save meal remnants. For more information on the treatment of ciguatera poisoning, contact the US National Poison Control Center at (800) 222-1222.

(Published at Health News Track on February 7, 2008 - 203 days ago)

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