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Related Experiment Videos

Anisakis larval type I in fresh salmon

J S Rosset, K D McClatchey, G I Higashi

    American Journal of Clinical Pathology
    |July 1, 1982
    PubMed
    Summary

    Anisakis Type I roundworms were found in all tested fresh salmon samples, posing a risk of anisakiasis in the United States. This parasitic infection can cause gastrointestinal issues, presenting a diagnostic challenge.

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    Area of Science:

    • Parasitology
    • Foodborne Illness
    • Public Health

    Background:

    • Anisakis larval Type I, a roundworm, is identified as the cause of anisakiasis.
    • Anisakiasis is a parasitic disease affecting the human gastrointestinal tract, leading to eosinophilic granulomas.
    • Infection occurs through consuming raw or undercooked fish.

    Purpose of the Study:

    • To identify the species of ascarid nematodes in fresh salmon.
    • To assess the prevalence and intensity of Anisakis infection in fresh salmon.
    • To discuss the public health implications of Anisakis infection in the United States.

    Main Methods:

    • Larval ascarid nematodes from fresh salmon were identified.
    • Salmon samples were tested by the University of Michigan Clinical Microbiology Laboratory and School of Public Health.

    Main Results:

    • Larval ascarid nematodes in fresh salmon were identified as Anisakis larval Type I.
    • All unselected fresh salmon samples tested were infected with Anisakis.
    • The mean worm burden was calculated at 79.3 larvae per kilogram of fish.

    Conclusions:

    • Fresh salmon frequently harbors Anisakis Type I larvae, a significant food safety concern.
    • The high prevalence and worm burden indicate a substantial risk for anisakiasis in the United States.
    • Anisakiasis presents a diagnostic challenge due to its varied clinical presentation, mimicking other abdominal conditions.

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