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Environmental exposure characterization of fish processing workers.

M F Jeebhay1, T G Robins, N Seixas

  • 1Occupational and Environmental Health Research Unit, School of Public Health and Family Medicine, University of Cape Town, Room 4.44, Fourth Level, Falmouth Building, Anzio Road, Observatary, 7925, South Africa. mjeebhay@cormack.uct.ac.za

The Annals of Occupational Hygiene
|February 12, 2005
PubMed
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Workers in fish processing plants inhale airborne fish antigens, posing a risk for allergic respiratory disease. Exposures are highest in fishmeal production and bagging areas, with specific grouping strategies improving exposure assessment.

Area of Science:

  • Occupational Health
  • Environmental Science
  • Allergen Exposure Assessment

Background:

  • Aerosolization of seafood during processing presents a significant risk for allergic respiratory diseases in workers.
  • Understanding airborne allergen exposure is crucial for mitigating occupational health risks in the fish processing industry.

Purpose of the Study:

  • To quantify airborne particulate, protein, and specific fish (pilchard, anchovy) antigen concentrations in fish processing plants.
  • To determine correlations between exposure metrics and identify key factors influencing exposure variability.
  • To evaluate optimal grouping strategies for establishing dose-response relationships for fish antigen exposure.

Main Methods:

  • Conducted personal time-integrated air sampling using thoracic fraction samplers in two fish processing factories.

Related Experiment Videos

  • Analyzed samples for particulate mass, total protein, and specific pilchard and anchovy antigens.
  • Utilized ANOVA techniques to determine the main components of exposure variability and compared different worker grouping strategies.

    • Main Results:

    • High variations in thoracic particulate, total protein, pilchard, and anchovy antigen concentrations were observed across exposure groups.
    • Fishmeal loading and bagging sections exhibited consistently high levels of all measured airborne contaminants.
    • A strong correlation was found between pilchard and anchovy antigen concentrations (r=0.71), while correlations with particulate mass were modest.

    Conclusions:

    • Workers in bony fish processing are exposed to airborne pilchard and anchovy antigens, with peak exposures during fishmeal production and bagging.
    • Grouping strategies based on factory departments may offer a more efficient approach for assessing fish antigen exposure compared to a priori exposure groups.