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  • Title: [Prevalence of respiratory systems and evaluation of sensitization levels in traditional grain market workers in Casablanca].
    Author: Laraqui CH, Caubet A, Laraqui O, Benghalem A, Harourate K, Bichara M, Curtes JP, Verger C.
    Journal: Rev Mal Respir; 2000 Nov; 17(5):947-55. PubMed ID: 11131873.
    Abstract:
    Our study proposes to evaluate the prevalence of clinical respiratory symptoms, spirometric abnormalities and allergy skin test sensitivities in two groups: on exposed to grain dust in a big traditional grain market in Casablanca and the other unexposed. The inquiry which concerned 277 exposed workers and 230 non exposed consisted of a questionnaire, spirometric examinations and skin prick testings. Exposed and no exposed groups are statically similar as far as physical data (sex, age, weight, heignt) and smoking habits. The atopy was found among 18% of the exposed. The prevalence of clinical respiratory symptomatology among exposed is 64.3% against 24.8% among non exposed. Respiratory symptoms (cough, expectoration), rhinitis, asthma, conjonctivitis, dermatitis, chronic bronchitis were significantly more frequent in those exposed than in the non exposed. Smoking is at the origin of additional morbidity. Atopy seems to be a potentiating factor as all the atopic people exposed are symptomatic. Respiratory function was altered in 37.1% of those exposed versus 12.8% of those no exposed. Among exposed workers with decline of lung function parameters 68.9% have only light anomalies. Tabacco interferes significantly in the alteration of respiratory function parameters. Work exposure to grain associated with smoking resulted in a reduction in respiratory function values. In grain workers, the prevalence of allergy skin test sensitivities of occupational allergens is 30.3% versus 6.9% among those no exposed. The enquiry in the workplace shows complete absence of means of protection for the work force and elevated levels of dust. It is imperative to implement an occupational health service and to develop means for collective and individual prevention to maximally reduce the risk.
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