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Invasive anisakiasis. A case report from Hawaii
Gastroenterology
|April 1, 1986
Summary
A rare case of stomach wall penetration by a parasitic nematode, Anisakis simplex, occurred in the US after consuming raw salmon. This highlights a significant health risk associated with eating raw seafood.
Area of Science:
- Medical Parasitology
- Foodborne Illness
- Gastroenterology
Background:
- Anisakidosis is a foodborne parasitic infection caused by nematode larvae.
- Consumption of raw or undercooked seafood is a primary transmission route.
- Previous cases have been reported globally, but this is the first confirmed US instance.
Observation:
- A patient in Hawaii presented with symptoms after consuming fresh, raw salmon.
- A viable third-stage larva of Anisakis simplex was successfully removed from the stomach wall.
- Serodiagnostic testing revealed a positive IgE response specific to A. simplex.
Findings:
- This case represents the first documented instance of Anisakis simplex penetrating the stomach wall in the United States.
- The patient's immune response, indicated by specific IgE antibodies, confirmed the infection.
- The presence of a viable larva underscores the potential for parasitic infections from raw salmon consumption.
Implications:
- Eating fresh, raw salmon poses a significant health risk due to potential Anisakis simplex infections.
- Healthcare providers should consider anisakidosis in patients with relevant exposure history and gastrointestinal symptoms.
- Public health awareness regarding safe seafood consumption practices is crucial to prevent foodborne parasitic diseases.
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