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Figure Y. Primary and Secondary Syphilis — Estimated Rates of Reported Cases Among MSM† by State, United States, 2016

Figure Y. United States map showing estimated rates of reported cases of primary and secondary syphilis among MSM in 2016 by state. The data represented in this figure can be downloaded at

* States reporting less than 70% of cases identified as MSM, MSW, or women in 2016 are suppressed.

MSM = Gay, bisexual, and other men who have sex with men (collectively referred to as MSM); MSW = Men who have sex with women only.

NOTE: Estimates based on reported P&S syphilis cases among MSM in 2016 (numerator) and a published method of estimating the population size of MSM (denominator) by state. See Section A1.2 in the Appendix for information on estimating MSM population sizes for rate denominators.

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