Information of the infants born from mother with CHB (n=183) Infants' characteristics Number Percentage% Average birth weight: 3019 + 298.2 gram Sex Girl 88 48.1 Boy 95 51.9 Delivery form Vaginal delivery 120 65.6 Cesarean section 63 34.4 Nursery type Breastfeeding 90 49.2 Bottle feeding 80 43.7 Combination 13 7.1 Comment: Out of a total 183 infants were born from mother with chronic HBV, the average birth weight was 3019 + 298.2 gram; the rate is higher in the group of baby boys (51, 9%); vaginal delivery (65, 6%) và exclusive breastfeeding (49, 2).