Domoic Acid Poisoning, also known as Amnesic Shellfish Poisoning (ASP), is a severe form of food poisoning caused by consuming seafood contaminated with domoic acid. This potent neurotoxin is produced by certain marine algae, primarily affecting humans and marine wildlife in coastal regions globally during harmful algal blooms.
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Domoic Acid Poisoning was first identified in 1987 during a major outbreak in Prince Edward Island, Canada. Contaminated mussels caused over 100 illnesses and several deaths, notably characterized by severe short-term memory loss. This event led to the recognition of domoic acid as a significant marine biotoxin and the implementation of widespread monitoring programs.
Domoic Acid Poisoning is transmitted through the consumption of seafood (primarily shellfish like mussels, clams, oysters, and scallops, but also certain finfish and crab viscera) that have accumulated domoic acid. These marine organisms filter-feed on or consume toxic algae during harmful algal blooms. The toxin is not spread directly from person to person.
Contagious Period: Varies by disease
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Our AI-powered surveillance hasn't detected significant Domoic Acid Poisoning activity in the past 30 days.
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Currently, Domoic Acid Poisoning case counts are within baseline expectations globally. However, diseases can emerge rapidly, which is why continuous monitoring is critical.
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View WHO Resources →Disease information on Virus Watcher is reviewed by our Chief Epidemiologist, a former CDC lead analyst for FluSight forecasting. Outbreak data is aggregated from verified sources including BEACON, ProMED, WHO, CDC, and 50+ national health agencies. This information is for educational purposes and should not replace professional medical advice.
Last reviewed: 2026-06-03
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