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 2017 – Syphilis (September 25, 2018)
- Increase in Incidence of Congenital Syphilis — United States, 2012–2014 MMWR November 13, 2015
- Incidence, Prevalence, and Cost of Sexually Transmitted Infections in the United StatesCdc-pdf (February 13, 2013)
- STD Health Equity
Primary and Secondary Syphilis — Distribution of Cases by Sex and Sexual Behavior, 2017
Image Source: Figure 39 from STD Surveillance 2017
Page last reviewed: December 16, 2016