Success rate of syphilis block during pregnancy

The success rate of maternal syphilis block is generally very high, but the premise is to early screening early detection, and then to achieve early block, so that the success rate can be high. If found in early pregnancy, generally in the first 16 weeks, the mother's Treponema pallidum basically does not cross the placental barrier to infect the fetus, so this time to start blocking treatment, it is likely that the fetus will not be infected, born is a healthy baby. If it is detected late, treatment may be less successful in the second or third trimester, but even so, earlier standard treatment may cure the infected syphilis before the fetus is born, and the child is not born with congenital syphilis.