Allergic reactions to Anisakis found in fish

Area of Science:

• Foodborne Parasitology
• Clinical Immunology
• Allergenicity

Background:

• Anisakis is a food-borne parasitic nematode, with its larval form infecting fish.
• Ingestion of Anisakis-contaminated seafood can trigger severe allergic reactions, including gastrointestinal issues, urticaria, dermatitis, asthma, and anaphylaxis.
• Accurate prevalence data for Anisakis sensitization is lacking due to insufficient population-based studies.

Purpose of the Study:

• To highlight Anisakis as a significant hidden food allergen.
• To underscore the challenges in estimating Anisakis sensitization prevalence.
• To discuss current diagnostic limitations and the need for further research into the immunology of Anisakis infection and sensitization.

Main Methods:

• Review of existing literature on Anisakis parasitology and human allergic responses.
• Analysis of diagnostic approaches, focusing on serum IgE antibody detection.
• Discussion of immunological cross-reactivity issues with other invertebrate allergens.

Main Results:

• Anisakis sensitization presents with a range of symptoms from mild to life-threatening anaphylaxis.
• Current diagnostic methods using serum IgE have limitations due to cross-reactivity.
• Increasing global seafood consumption suggests rising Anisakis exposure.

Conclusions:

• Anisakis is a critical hidden food allergen requiring greater attention.
• Improved diagnostic tools and population-based studies are essential for accurate Anisakis sensitization assessment.
• Further research into the immunology of Anisakis infection is crucial given increasing exposure.