Abstract

Nineteen cases of poisoning by the organophosphorus insecticide trithion (O,O-diethyl S-p-chlorophenylthiomethyl phosphorodithioate) are reported among workers on a sugarcane estate in Trinidad. There were no fatalities. Whole blood cholinesterase values determined by a portable field kit are given for some cases. The insecticide was applied as a dust under conditions in which absorption through the skin and inhalation were probably unusually severe.