Reentry Field Data and Conclusions

The history of agricultural harvesters being clinically poisoned from working in a field following a “recent” organophosphate (OP) insecticide application dates back to their earliest use circa 1950. Initially, the documentation was sporadic case reports (Abrams and Leonard 1950; Ingram 1951; Quinby and Lemmon 1958; Milby et al. 1964). Summaries began to be published beginning in 1974 (Milby et al. 1974; Spear et al. 1975; NIOSH 1976; Gunther et al. 1977; Popendorf and Leffingwell 1982; and Honeycutt et al. 1985).