Herpes and pregnancy can occur at the same time. In fact 20% to 25% of pregnant women worldwide have genital herpes - some are active and some are asymptomatic.
Although the mothers-to-be are not at risk, the unborn baby may be in danger.
The degree of risk the baby faces is dependent on three major factors:
The herpes infection timeline.
Whether antibodies are present in the mother-to-be.
Whether there has been enough time for antibodies to develop in the baby before the onset of labor.
Let me explain:
As a result of a herpes primary infection, the system produces antibodies to the particular type of virus involved.
If a woman contracts
herpes, approximately six weeks after the primary outbreak the resultant antibodies in her system will prevent infection of an additional form of her particular HSV infection.
What's more important regarding herpes and pregnancy, after six to nine weeks, the baby will acquire antibodies via the placenta.
Once that has happened, it is extremely difficult for cross infection to occur while the infant is still in the womb. It also makes it unlikely that the baby will become infected if the mother happens to be in the viral shedding stage during birth.