Syphilis is a sexually acquired infection caused by a bacteria-like spirochete Treponema pallidum.
Syphilis can be transmitted between partners during sexual intercourse and from an infected pregnant woman across the placenta to a developing baby.
Infection during pregnancy usually results in miscarriage, stillbirth or a congenitally infected baby. Maternal infection is detectable and treatable which prevents transmission to the baby.
Syphilis can be treated with antibiotics.
For symptoms and general information on syphilis, visit NHS.UK.