[Poisoning by pesticides among family fruit farmers, Bento Gonçalves, Southern Brazil].
OBJECTIVE
To describe the occupational exposure to acute poisoning by pesticides, especially organophosphates, and its incidence.


METHODS
A descriptive study was carried out on 290 family fruit farmers in the municipality of Bento Gonçalves, Southern Brazil, conducted in two stages in 2006. Two hundred and forty-one of these workers completed the two stages, which corresponded to periods of low use and intense use of pesticides. Data on the property, occupational exposure to pesticides, sociodemographic data and frequency of health problems were gathered using a standardized questionnaire. Poisoning was characterized by reports of episodes, symptoms relating to pesticides and plasma cholinesterase examinations. Cases were classified according to the matrix proposed by the World Health Organization (WHO).


RESULTS
On average, each property used 12 different types of pesticides, consisting mainly of glyphosate and organophosphates. Most of the workers used tractors for pesticide application (87%), set aside the containers for selective garbage collection (86%) and used protective equipment during activities involving pesticides (> or = 94%). Among these family farmers, 4% reported occurrences of poisoning by pesticides over the 12 months preceding the investigation, and 19% at some time during their lives. According to the criterion proposed by WHO, 11% were classified as probable cases of acute poisoning. Among the workers who had used organophosphates over the ten-day period preceding the examination, 2.9% presented two or more symptoms relating to pesticides and a 20% reduction in cholinesterase.


CONCLUSIONS
The poisoning occurrences according to the workers' perceptions were within what was expected, but the estimate based on the WHO classification picked up a larger proportion of the cases. A fall in the harvest reduced the use of insecticides and may explain the low occurrence of abnormalities in the laboratory results. The criteria for defining pesticide poisoning, as well as the official monitoring parameters, should be reevaluated in order to increase the workers' protection.
Faria
Neice Müller Xavier
NM
Serviço de Vigilância Epidemiológica, Secretaria Municipal de Saúde de Bento Gonçalves, Bento Gonçalves, RS, Brazil. neicef@italnet.com.br
Rosa
José Antônio Rodrigues da
JA
Facchini
Luiz Augusto
LA
D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D000368:Aged; D000382:Agricultural Workers' Diseases / Q000453:epidemiology*; D001938:Brazil / Q000453:epidemiology; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D016273:Occupational Exposure / Q000009:adverse effects*; D010575:Pesticides / Q000506:poisoning*; D012307:Risk Factors; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D055815:Young Adult
D010575:Pesticides