ID in children is the most frequent micronutrient deficiency in industrialized countries, including France. ID induces neurological impairment reducing cognitive, motor, and behavioral capacities in children in the short and long term. The purpose of this study is to evaluate the principal determinants of ID in France in two-year-old children and to improve strategies for prevention and screening. The main objective is to study the association between iron status in two-year-old infants living in France and the consumption of toddler milk formula after taking non-dairy iron ingestion, parental socioeconomic status and educational level into account. The secondary objectives are the following : * to estimate the prevalence of ID and ID anemia in 2-year-old children living in France. * to improve clinical tools for ID screening. to improve strategies for laboratory screening.
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Serum ferritin level
Timeframe: Between day 8 and day 15 (or plus 15 days)