Abstract

Pyrethroid insecticides are often used in agriculture, and workers are thus frequently exposed to them on a daily basis. It is important as a result to get an accurate measurement of exposure to these substances from exposure biomarkers. Though these are not the only pesticides to which agricultural workers are exposed, the impact that concomitant or sequential exposure in a day (co-exposure) to several pesticides can have on the interpretation of biomonitoring data has to date been little studied.

The purpose of this project is to examine the impact of co-exposure on biomarkers of exposure to pyrethroid insecticides in agricultural workers. If it proves that co-exposure contributes significantly to variations in biomarker levels, recommendations will be made to limit co-exposure in these workers.