To determine whether previous health experiences affect the prevalence of occupational lung disease in a semirural Botswanan community where there is a long history of labour recruitment to South African mines.
Method-A cross sectional prevalence study of 304 former miners examined according to a protocol including a questionnaire, chest radiograph, spirometry, and medical examination.
-Overall mean age was 56.7 (range 28-93) years, mean duration of service 15.5 (range 2-42) years. 26.6% had a history of tuberculosis. 23.3% had experienced a disabling occupational injury.
Overall prevalence of pnemoconiosis (>110 profusion, by the International Labour Organisation classification) was 26.6% - 31.0%, and 6.8% had progressive massive fibrosis (PMF).
Many were entitled to compensation under South African law.
Both radiograph readers detected time response relations between pneumoconiosis and PMF among the 234 underground gold miners.
PMF could result from<5 years of exposure, but was not found<15 years after first exposure.
Both pulmonary tuberculosis (PTB) and pneumoconiosis were found to be associated with airflow limitation.
Conclusions--Former miners in Botswana have a high prevalence of previously unrecognised pneumoconiosis, indicative of high previous exposures to fibrogenic respirable dust.
Their pneumoconiosis went unrecognised because they had no access to surveillence after employment. (...)
Mots-clés Pascal : Mine, Industrie extractive, République Sud Africaine, Afrique, Exposition professionnelle, Médecine travail, Homme, Poumon, Prévalence, Epidémiologie, Antécédent, Etude transversale, Botswana, Fonction respiratoire, Poussière, Appareil respiratoire pathologie, Toxicité, Pneumoconiose, Maladie professionnelle, Histoire professionnelle
Mots-clés Pascal anglais : Mine, Mining industry, South Africa, Africa, Occupational exposure, Occupational medicine, Human, Lung, Prevalence, Epidemiology, Antecedent, Cross sectional study, Botswana, Lung function, Dust, Respiratory disease, Toxicity, Pneumoconiosis, Occupational disease
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0177233
Code Inist : 002B03L03. Création : 21/05/1997.