Syphilis is a sexually transmitted infection caused by the bacterium Treponema pallidum. Untreated infection can lead to long-term health problems, including brain disease. Syphilis increases both transmission and acquisition of HIV. Tests and treatment are available.
Congenital syphilis is an infection transmitted from pregnant person to child during pregnancy and/or delivery caused by the bacterium Treponema pallidum. Congenital syphilis can cause severe illness in infants including premature birth, low birth weight, birth defects, blindness, and hearing loss. It can also lead to stillbirth and infant death. Tests and treatment for pregnant people are readily available.