Primary and Secondary Syphilis — Reported Cases by Sex and Sex of Sex Partners, United States, 2016–2020 

Ribbon plot showing reported cases of primary and secondary syphilis by sex and sex of sex partners during 2016 to 2020.

ACRONYMS: MSM = Gay, bisexual, and other men who have sex with men; MSU = Men with unknown sex of sex partners; MSW = Men who have sex with women only
NOTE: Over the five-year period, 0.2% of cases were missing sex and were not included.