Abstract
Hen's egg proteins are known sensitizers and may cause occupational respiratory diseases in exposed workers. The study was conducted in order to ascertain the prevalence of sensitization to work-related antigens in asymptomatic egg processing factory workers. Clinical history, respiratory function, atopy and the presence of specific antibodies to environmental and occupational antigens were evaluated in 77 workers. A total of 116 unexposed and non-professionally exposed controls were also studied. The antigen concentration of the factory environment was measured. Specific IgE and precipitin positivity to egg components was more frequently present in workers than in the two control groups. The egg white protein concentration was higher in the egg breaking area. The avian proteins inhaled induced immune responses to occupational antigens in asymptomatic, professionally exposed subjects. Measures to decrease environmental antigen concentrations and thorough clinical monitoring of sensitized workers are advocated.
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