Pyrethrin and Pyrethroid Illnesses in the Pacific Northwest

Objective: Pyrethrin and pyrethroid pesticides are commonly applied in homes and businesses and on some agricultural crops. This research used a 2-state regional approach to investigate reports of acute pesticide poisonings thanks to pyrethrin and pyrethroid pesticides.

Methods: The Washington State Department of Health and the Oregon Public Health Division collected pesticide poisoning surveillance data from 2001 through 2005. Cases were included if they involved exposure to at least one pyrethrin or pyrethroid insecticide. Descriptive statistics were calculated; variations between classes were assessed using Chi-sq. analysis.

Results: A total of 407 cases match our definition. Overall, the speed of poisoning in Oregon was significantly higher than in Washington (incidence rate ratio one.seventy, ninety fivep.c confidence interval one.forty, a pair of.07), and rates for each states typically increased during the time period. For both states, most exposures resulted in low severity illnesses (92p.c), and most were classified as doable cases (73%). Only concerning one-fourth of cases were connected to someone’s work. The most common category of clinical signs and symptoms of illness was respiratory (52% of cases), followed by neurological (40p.c of cases). Exposure route was predominantly inhalation; there was no association between route and case severity. There was a important association between illness severity and losing time from work or regular activities.

Conclusions: Although the majority of pyrethrin and pyrethroid poisoning cases were low in severity, adverse reactions have occurred, as transpired in Oregon in 2005. Regional analysis has the potential to enhance the surveillance system and offer unique opportunities for targeting preventive interventions.