Association between postpartum depression and the practice of exclusive breastfeeding in the first three months of life.

Objective: To investigate the association between postpartum depression and the occurrence of exclusive breastfeeding.

Method: This is a cross-sectional study conducted in the states of the Northeast region, during the vaccination campaign in 2010. The sample consisted of 2583 mother-child pairs, with children aged from 15 days to 3 months.