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Lead has neurotoxic effects in children, even at a very low level in blood. The risk factors (RFs) for lead exposure have not been adequately identified in La Plata. The objectives of this study were to determine mean blood lead levels and identify RFs in children aged 1 to 6 years old living in La Plata and the outskirts.POPULATION AND METHODSA cross-sectional study was conducted in children who attended primary health care centers for a health check-up. Blood lead levels were determined by atomic absorption spectroscopy, and a socioenvironmental survey was administered to outline RFs. The Mann-Whitney test was used to compare measurements. A multivariate statistical analysis was done to establish the most relevant RFs.RESULTSA total of 319 children participated (51% were boys); the median (interquartile range) blood lead level was 2.2 pg/dL (1.1-3.6 pg/dL). Significant mean differences in blood lead levels were observed for age≤ 3years old, anemia, pica behavior, overcrowding, dirt floors, and maternal education < 7 years. Age≤ 3years old and pica behavior were both RFs with significant odds ratios (ORs). The OR as adjusted by logistic regression was significant only for age≤ 3years old.CONCLUSIONSThe median blood lead level in the studied population was 2.2 pg/dL. The main RFs identified for lead exposure were age≤ 3years old and pica behavior. Other less relevant RFs included anemia, maternal education < 7 years, overcrowding, and dirt floors.

Niveles de plombemia en niños de 1 a 6 años en la región de La Plata, Argentina. Identificación de factores de riesgo de exposición al plomo