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Occupational Medicine 1997;47:301-308
© 1997 Society of Occupational Medicine

research-article

The problems associated with pesticide use by irrigation workers in Ghana

E. E. K. Clarke, L. S. Levy, A. Spurgeon and I. A. Calvert

Institute of Occupational Health, University of Birmingham Birmingham, UK

The use of pesticides in Ghanaian agriculture, though beneficial in reducing crop loss both before and after harvest, has been associated with threats to human health often due to the misapplication of the chemicals. This study was an initial attempt to explore the knowledge, attitudes and practices of 123 farm workers on three irrigation project areas in the Accra Plains, Ghana, regarding the safe handling and use of pesticides, to assess the prevalence of symptoms associated with organophosphorus pesticides (OPs) and carbamates and to determine the prevalence of pesticide-related symptoms, and blood cholinesterase. The study design was cross-sectional in type. Methods used were interviews and observation, and biological monitoring. The results revealed moderate levels of knowledge of the routes of absorption of pesticides and of potential symptoms following exposure. Knowledge of personal protective measures was poor to moderate. High risk practices included frequent handling of the chemicals, home storage of pesticides and short re-entry intervals. Despite knowledge of some health risks associated with pesticides, the use of personal protective equipment (PPE) was minimal due primarily to financial constraints. The prevalence of symptoms was higher and cholinesterase levels lower than in a control group of teachers. It is suggested that there is a need for more epidemiologic studies to investigate the problems associated with pesticide induced ill health as well as research into appropriate and affordable PPE. PPE needs to be subsidized. Training of agriculture and health workers in safety precautions, recognition, and management of pesticide-related ill health is a matter of urgency.

Keywords      Irrigation workers; organophosphates; pesticides; PPE

Received       13 November 1995
Accepted       24 February 1997

Correspondence and reprint requests to: Dr E. E. K. Clarke, Ministry of Health, Ghana, c/o PO Box 11355, Accra North, Ghana


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