Figure 43. Primary and Secondary Syphilis—Reported Cases* by Sex, Sexual Behavior, and Race/Ethnicity,† United States, 2009
* Of the reported male cases of primary and secondary syphilis, 20% were missing sex of sex partner information; 1.7% of reported male cases with sex of sex partner data were missing race/ethnicity data.
† No imputation was done for race/ethnicity.
‡ MSW = men who have sex with women only; MSM = men who have sex with men.