HIA and fears of toxicity: health risk assessment of a control programme for the white-spotted tussock moth in New Zealand
On 17 April 1996, a resident of Kohimarama, Auckland, first identified caterpillars of the white-spotted tussock moth (Orgyia thyellina). In response to the potential threat to native and planted forests, horticultural crops, amenity trees, and gardens, a programme to eradicate the pest commenced in October 1996, using aerial and ground application of the biological pesticide Foray 48B. The campaign, named Operation Ever Green, was implemented by the then New Zealand Ministry of Forestry. A health risk assessment (HIA) preceded the aerial spraying in 1996/1997 and incorporated a plan for risk management and communication. In 1997 a second health risk assessment was performed preparatory to possible continued control measures. This chapter focuses on the second health risk assessment.
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