Abstract
Purpose
The aim of the study was to evaluate exposure to moulds and house dust mite Dermatophagoides pteronyssinus in poultry farms, and related health effects in poultry workers (PW).
Methods
The study involved 41 PW and 45 control office workers. Working environment was evaluated for D. pteronyssinus allergen (Der p 1), moulds and endotoxin. In workers, eye, skin and respiratory symptoms, ventilatory lung function, atopy markers (skin prick test to inhalatory allergens, total IgE) and specific IgG to moulds were assessed.
Results
Der p 1 levels ranged <0.1–3.3 μg/g, exposure to fungi was 4.9 × 103–6.8 × 104 cfu/m3, with prevailing Aspergillus, Penicillium and Mucor species, and endotoxin levels ranged 230–284 EU/m3. In comparison to control subjects, significantly higher prevalence of work-related nose, asthma, eye and skin symptoms, and slight decline in ventilatory lung function was found in PW. PW had significantly higher prevalence of IgG antibodies to moulds comparing to controls (63 vs. 36%, respectively, P = 0.01), especially to Alternaria and Aspergillus species. The prevalence of atopy markers in PW was lower than in population-based studies.
Conclusions
Hazardous levels of Der p 1, endotoxin and moulds were determined in poultry houses. High prevalence of work-related symptoms and IgG antibodies to moulds was found in PW. Healthy worker effect is proposed as an explanation of low atopy markers prevalence among PW.
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Acknowledgments
The study was done within the scientific projects No. 022-0222411-2410 and No. 053-0531854-1867, financially supported by the Ministry of Science, Education and Sports of Republic of Croatia. Projects were approved by authorized Ethical Committees.
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Rimac, D., Macan, J., Varnai, V.M. et al. Exposure to poultry dust and health effects in poultry workers: impact of mould and mite allergens. Int Arch Occup Environ Health 83, 9–19 (2010). https://doi.org/10.1007/s00420-009-0487-5
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DOI: https://doi.org/10.1007/s00420-009-0487-5