If the baby is delivered vaginally, there is an excellent chance they will acquire the syphilis
There is no reason to think the woman's mate won't also acquire it unless barrier protection (e.g., condom) is used during sexual intercourse
. If a woman knows, or suspects, she has syphilis before she gives birth, she needs to talk to her doctor to treat the syphilis before giving birth.
Answer assisted by David Escobar, Medical Student