Alarcon et al used a simple scheme to classify toxic exposures to pesticides at schools. The authors are from the National Institute for Occupational Safety and Health and multiple state health departments across the United States.
Category
Features
none
no adverse reaction
low
localized reaction not requiring medical care; may include irritation of eye, skin or upper respiratory tract; may include fever, headache, fatigue or dizziness
moderate
may be localized or systemic reaction requiring treatment; no residual disability after recovery
high
life-threatening; requires hospitalization to prevent death; may result in significant disability
A person with asthma or other comorbid conditions may have a lower threshold for an adverse reaction.
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