Volunteer for NIAID-funded clinical studies related to syphilis on ClinicalTrials.gov.
The most common way to get syphilis is by having sexual contact with an infected person. If you are infected, you can pass the bacteria from infected skin or mucous membranes (linings), usually your genital area, lips, mouth, or anus, to the mucous membranes or skin of your sexual partner.
The bacteria are fragile, so you cannot get syphilis from sharing food or utensils, or from using tubs, pools, or toilets.
Syphilis can be passed from mother to infant during pregnancy, causing a disease called congenital syphilis.
Last Updated December 10, 2010