Prevention of MTCT of HBV during perinatal period is important.
Intrauterine infection and immunoprophylaxis failure may cause MTCT.
HBIG plus HBV vaccine in neonates within 12 h after delivery is recommended.
High viremic pregnancies should take tenofovir or telbivudine at third trimester.
Breastfeeding is recommended in women without antiviral agents.