Objective To observe the transfusion transmitted virus (TTV) infection rate in gravidas and parturients, and explore the route of maternal fetal transmission.
目的探讨孕产妇输血传播病毒（TTV）感染率及其在母婴间的传播途径。
2
Purpose to observe the clinic curative effect of intrauterine fetal blood transfusion to neonatal RH hemolytic disease.