Syphilis Statistics
Men account for the most cases of syphilis, with the vast majority of those cases occurring among men who have sex with men (MSM).
- STD Surveillance 2016 – Syphilis (September 26, 2017)
- Increase in Incidence of Congenital Syphilis — United States, 2012–2014 MMWR November 13, 2015
- Syphilis Profiles 2013 (February 9, 2015)
- Primary and Secondary Syphilis — United States, 2005–2013 – MMWR May 9, 2014
- Incidence, Prevalence, and Cost of Sexually Transmitted Infections in the United States (February 13, 2013)
- STD Health Equity
- Syphilis Surveillance Annual Report (All Years)
Primary and Secondary Syphilis — Distribution of Cases by Sex and Sexual Behavior, 2016

Image Source: Figure 36 from STD Surveillance 2016
- Page last reviewed: December 16, 2016
- Page last updated: September 22, 2017
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