What is the cause of syphilis? Syphilis is caused by a bacteria called Treponema pallidum. Transmission commonly occurs via direct contact with an infectious lesion on a partner during sex. Contact with infected secretions with almost any tissue can lead to a primary infection. This includes kissing or touching a person with active lesions on the lips, breasts, or genitals. In pregnant mothers, the disease can spread to the fetus via the placenta.
Once infection occurs, it takes around 10 days to 3 months to manifest into a syphilis sore, and the infection may progress from there.
Why does syphilis spread more quickly in certain areas compared to others? Factors like inheritance, economic factors, and overall sexual practices play a part.