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Treponema pallidum
Treponema pallidum
Syphilis is a sexually transmitted infection that is caused by the bacterium Treponema pallidum. Anyone who comes into close physical contact with a person who has syphilis can develop syphilis - exposure can result from close contact with an infected person's genitals, mouth, or rectum. If left untreated, syphilis can progress to a late stage that causes serious health problems. If detected, syphilis can be cured with antibiotics. Antibiotic treatment cannot reverse the damage caused by the complications of late-stage syphilis, but it can prevent further complications.

Facts & Figures

Get an overview about syphilis. Learn about the causes, treatments and prevention.

Information for Health Professionals

Last Updated: November 18, 2013