Chronic respiratory symptoms of poultry farmers and model-based estimates of long-term dust exposure.

Objectives: The airborne contaminant exposure levels experienced by poultry farmers have raised concerns about the possible health hazards associated with them. Thus, a longitudinal project was instituted in France to monitor these exposures in poultry workers and to evaluate the long-term effect on health.

Method: Sixty-three workers in two different poultry housing systems were included (33 from floor-based systems and 30 from cage-based systems).