All children will undergo medical and anthropometric examinations at 4-monthly intervals and disease symptoms monitoring every week. Dietary intake assessments will be conducted at 12 and 15 months of age. A random sample of 36 children will undergo breast milk intake assessments before the start of food supplementation and during food supplementation. A blood sample will be collected at the beginning and end of the study to measure blood haemoglobin and serum ferritin concentrations and test human immunodeficiency virus [HIV] (at 6 and 18 months).