Respiratory diseases in French cork workers.

A cross-sectional study on suberosis was conducted in the Champagne-Ardenne County, France, to determine the prevalence of respiratory symptoms, the level of pulmonary function, and the presence of precipitins against Penicillium frequentans. Thirteen of the 33 workers exposed to cork dust had respiratory symptoms excluding hypersensitivity pneumonitis. The respiratory symptoms were not correlated with tobacco habits or duration of exposure. The levels of pulmonary function were not significantly impaired. No precipitin arc against Penicillium frequentans was found in the sera of exposed workers. The varied symptomatology of suberosis may point to several different diseases, each with its own determining factor. In the present study, exposure to weak humidity and low level of cork dust were related to asthma and chronic bronchitis only, excluding hypersensitivity pneumonitis.