Microban, a pesticide not registered in California, was sprayed into an operating heating/ventilation/air conditioning (HVAC) unit at an elementary school in San Francisco, California.
This incident occurred on Monday, September 28,1992, white 396 students and 67 staff members were in the school.
The Microban formulation used contains ortho-phenylphenol (0.21%), a quaternary ammonium complex (di-isobutylphenoxy-ethoxy-ethyldimethylbenzyl-ammonium chloride, 0.69%), and bromine (0.04%). This study of the health effects of Microban mist exposure on the school staff was conducted as a result of legal and toxicological concerns.
California registration for this formulation had been denied because of inadequate data and because there were concerns about inhalation toxicity in test animals.
A self-administered health symptom questionnaire that covered the work week following the evacuation was used to determine a pattern of higher symptom risks for those who were at work on Monday and who reported that they felt they were exposed to a chemical.
Symptoms were elevated on Monday and Tuesday ; the symptoms normalized by the end of the work week.
No additional health effects were detected following application of chlorpyrifos to cracks and crevices for ant control 2 d following the Microban incident.
Strict supervision and coordination of pesticide use in public schools are recommended to prevent adverse health effects and emotional trauma in students and staff.
Mots-clés Pascal : Désinfectant, Pesticide, Ventilation, Ammonium quaternaire composé, Californie, Toxicité, Enfant, Symptomatologie, Irritation, Microban, Etats Unis, Amérique du Nord, Amérique, Homme
Mots-clés Pascal anglais : Disinfecting agent, Pesticides, Ventilation, Quaternary ammonium compound, California, Toxicity, Child, Symptomatology, Irritation, United States, North America, America, Human
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 95-0143678
Code Inist : 002B30A02C. Création : 09/06/1995.