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To the Editor:—
In The Journal, April 30, page 2077, is a report from the Committee on Toxicology which is in many ways misleading in its implications and may have results which were not intended by the committee. The report in question, "Occupational Dieldrin Poisoning," purports to review chronic occupational intoxication. It is not possible to determine from the report what is meant by the term "chronic." Does this refer to long-continued illness resulting from a single exposure, only to those from multiple exposures, or only to long-continued (chronic) exposure without reference to the duration of illness? To me, chronic occupational illness means illness of occupational origin persisting for a long time. There is some question as to whether dieldrin is capable of causing a chronic clinical illness, although electroencephalographic changes may persist for some time after the acute syndrome. The one new case reported in the review is an
Zavon MR. DIELDRIN INTOXICATION. JAMA. 1960;173(10):1160. doi:10.1001/jama.1960.03020280100028