It is particularly dangerous in that it also infects the placenta of pregnant women, with fatal consequences for both her and the foetus.

This article discusses the causes of placenta previa, harm, termination of pregnancy, bleeding after the treatment, mainly to reduce maternal and infant mortality.

Pre-eclampsia is one of the major diseases in obstetric field, the expression of HLA-G in patients with preeclampsia, but the mechanism of action still unclear.