Fever occurred in this baby immediately after birth by cesarean section, suggesting the presence of transplacental virus transmission. 因而推测，病患是由母体胎盘垂直感染而致病。
Finally, transplacental transmission of the disease to an unborn child may occur when the mother acquires a primary infection while pregnant. 最后，就是已经感染的母亲经过胎盘将疾病传染给孩子。
Neonatal lupus erythematosus (NLE), an immune-mediated disease with multisystem involvement in infants, is associated with the transplacental transfer of maternal autoantibodies. 摘要新生儿红斑性狼疮是一种由母亲的自体抗体藉由胎盘传给胎儿的免疫性疾病。
Objectives To determine the role of placenta in hepatitis B virus (HBV) intrauterine transmission, and to trace the route of transplacental transmission and the timing of HBV infection in uterus. 目的探讨乙型肝炎病毒（HBV）宫内传播的危险因素,并追踪HBV经胎盘传播的途径和胎儿宫内感染的时间。
Were originally infected as fetus - transplacental 最初经胎盘感染胎儿
