Results: Women with HBsAg carriers had higher incidences of preterm labour (19.3% vs 9%, p < 0.005), gestational diabetes (19, 5% vs 10%, p < 0, 005), cesarean section (34, 5% vs 24%, p <0, 05), prelabor rupture of membranes (7, 8% vs 4, 0%, p<0, 05) and fetal distress (18.9% vs 11%, p < 0.05).