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2015 Conference

Abstract Number: 3800 | ID: 2015-3800

Lead Exposure And Associated Factors In Preschool Children Living In Fishing Community In The Todos Os Santos Bay, Bahia, Brazil

Neuza Maria Miranda Dos Santos - Ufba; Luzimar Gonzaga Fernandez - Ufba; Wilson Nascimento Matos - Ucsal; Vanilda Fontes - Ucsal; Rui Lorenzo De Jesus Garcia - Ufba; Maria Das Graças Andrade Korn - Ufba;
Introduction: Lead exposure data of the population, particularly preschool children, are scarce in state of Bahia, Brazil. This was the first study conducted to identify risk factors associated with lead exposure in children. Methods: Cross-sectional, analytical studies were undertaken among 116 children aged 0-6 years, living in the fishing villages of Maré Island (MI) located in an area of environmental contamination in the northeast of TSB in Salvador, Bahia, Brazil. Blood (BPb) and hair (HPb) samples were collected for lead content analysis, anthropometric and iron status measurements were taken. Questionnaires were administered to obtain information about socio-economic status and risk factors for lead exposure. Venous blood lead and hair samples were analyzed by electrothermal atomic absorption and flame spectrometry. The iron status measurements included hemoglobin (Hgb), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH) and ferritin (FET). Results: Results indicated high average of Pb concentrations (p< 0.001), significantly higher in the children living in the SW; south-west (19.25 ± 8.78 μg/dL), as compared to those levels in children from the NE; north-east (7.58 ± 5.93 μg/dL). A high percentage of the children living in MI (61.1%) displayed a concentration of BPb over 10 μg/dL. HPb concentrations, just like BPb, were higher in children in the SW area (21.24 ± 14.01 μg/g) than in children in the NE (12.93 ± 10.36 μg/g; p< 0.01). The consumption of bivalve mollusks in the SW area in MI is considered a high risk factor, because the frequency of weekly consumption in children's diets resulted in 1,5 μg/dL increase in the concentrations of BPb (p= 0.008). Conclusions: The lifestyle of parents, risk behaviors of children and consumption of seafood, coupled with socio-economic and demographic factors, together, are the main causes of lead exposure in children in Maré Island. This study was approved by Ethical Committee (CEP-UFBA, 56/2005).