The controversy is further complicated by public fears over exposure to herbicides and dioxin resulting from domestic herbicide spraying, chronic exposure to dioxin of workers in the chemical industry, accidents in chemical plants that exposed workers, and dioxin released to the environment from several sources.
The controversy centers around both the use of herbicides in Vietnam and the purported health problems associated with exposure to herbicides, primarily Agent Orange and its contaminant 2,3,7,8-TCDD (2,3,7,8-tetrachlorodibenzo- p-dioxin), known scientifically as TCDD and to the general public as dioxin 1 (Young and Reggiani, 1988). The United States has been involved for more than two decades in a controversy over the military use of herbicides in Vietnam during the Vietnam era.
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