Objectives. Using data from the Épifane study on infant feeding during the first year of life, this paper presents breastfeeding rates at the maternity ward and at one month of age, and describes how these rates change according to maternal characteristics. Methods. The study includes a random sample of infants born between January 16 and April 5, 2012, in 136 maternity wards selected at random across mainland France. Data on infant feeding were collected at the maternity ward via a self-administered questionnaire and at one month via telephone interview. Results. More than two-thirds of the infants (69%) received breast milk in the maternity ward (60% exclusively, 9% in combination with infant formula). By one month of age, only half (54%) were still being breastfed, and only 35% exclusively. Breastfeeding rates varied by age, marital status, educational level, place of birth, body mass index, and smoking during pregnancy. In addition, participation in childbirth preparation classes, skin-to-skin contact following birth, and a positive perception of breastfeeding by the partner were factors promoting breastfeeding in the maternity ward and at one month. (R.A.) This article was published by the French Institute for Public Health Surveillance on September 18, 2012, in the Weekly Epidemiological Bulletin (ref: BEH 2012;(34):383–7).