HSV-II primarily invades the genitals and causes genital herpes. If the herpes simplex virus type II IgM antibody is positive, it means that there has been an infection with this virus or a recurrence in the last 3 months. Because the disease is a sexually transmitted disease, it requires concurrent treatment of sexual partners, usually with oral acyclovir tablets or valacyclovir tablets, with a course of treatment chosen according to the condition. In addition, if a pregnant woman is positive for IgM antibodies to herpes simplex virus type 2 in the first 3 months of pregnancy, it can affect the fetus and can cause fetal malformations or even stillbirth or miscarriage. In the second 6 weeks of pregnancy if normal delivery can also infect the newborn and cause neonatal herpes, a condition that is usually avoided by cesarean delivery.