[The prevalence of respiratory symptomes and immediate hypersensitivity reactions in a population exposed to flour and cereal dust in five flour mills in Morocco].

Objective: To evaluate the prevalence of respiratory symptoms, ventilatory function disorder and immediate hypersensitivity reactions in a population exposed to flour and cereal dusts in five flour mills in Morocco.

Methods: The study of 373 exposed and 301 non-exposed subjects consisted of an analysis of working conditions and a medical survey.

Results And Conclusion: The prevalence of clinical respiratory symptoms was 64.