A 22-year old woman brings her 13 months old daughter to a h…

A 22-year old woman brings her 13 months old daughter to a health department clinic fo routine well-child care. They live in an inner-city apartment building that the mother describes as “old and run down” with peeling chips of paint. The infant’s diet consists of table foods including eggs, peanut butter, and cheese. Screening of the infant for which of the following condition is recommended by the Centers for Disease Control and Prevention (CDC)