3.4 Some factors related to the perinatal transmission of HBV 3.4.1 Relationship between HBeAg status of pregnant woman at labor with HBV infection in their children In the HBeAg (+) pregnant women, the rate of HBV infected umbilical cord was 11.5% (7/61) and 4.9% (2/41) children were infected with HBV at 6 - 12 month of age.