TABLE 1. Rates and rate ratios for primary and secondary syphilis among men who have sex with men (MSM), among men who have sex with women only, and among women, by state and overall — United States, 2015*.
| State† | MSM |
Rate of primary and secondary syphilis per 100,000 population |
Rate ratio§ |
||||
|---|---|---|---|---|---|---|---|
| Estimated no. in population | % of all men | MSM | Men who have sex with women only | Women | MSM compared with men who have sex with women only | MSM compared with women | |
|
Overall
|
3,921,515
|
3.8
|
309.0
|
2.9
|
1.8
|
106.0
|
167.5
|
| Alabama |
41,822 |
2.3 |
320.4 |
2.4 |
1.9 |
131.5 |
169.4 |
| Alaska |
5,469 |
1.9 |
73.1 |
1.1 |
0.4 |
67.8 |
189.5 |
| Arizona |
112,102 |
4.5 |
385.4 |
3.3 |
1.7 |
116.1 |
222.0 |
| Arkansas |
19,101 |
1.7 |
314.1 |
3.4 |
2.2 |
92.9 |
140.6 |
| California |
796,926 |
5.5 |
332.2 |
3.9 |
3.1 |
85.8 |
108.0 |
| Colorado |
74,742 |
3.6 |
248.9 |
1.2 |
0.2 |
205.5 |
1,023.7 |
| Connecticut |
43,542 |
3.2 |
112.5 |
0.7 |
1.0 |
162.7 |
117.6 |
| Florida |
351,797 |
4.6 |
370.1 |
4.5 |
2.4 |
82.7 |
152.3 |
| Hawaii |
15,707 |
2.8 |
388.4 |
1.1 |
0.2 |
342.1 |
2,140.3 |
| Idaho |
9,979 |
1.7 |
320.7 |
2.4 |
1.3 |
131.0 |
242.7 |
| Illinois |
199,075 |
4.1 |
311.9 |
2.5 |
1.5 |
124.6 |
203.8 |
| Indiana |
72,413 |
3.0 |
290.0 |
1.5 |
1.1 |
193.3 |
266.6 |
| Iowa |
20,924 |
1.8 |
219.8 |
1.0 |
0.4 |
226.7 |
531.7 |
| Kansas |
21,906 |
2.0 |
228.2 |
1.3 |
1.4 |
169.6 |
168.1 |
| Kentucky |
47,576 |
2.9 |
159.7 |
1.9 |
1.3 |
84.5 |
126.8 |
| Louisiana |
43,204 |
2.5 |
601.8 |
8.4 |
9.5 |
71.9 |
63.7 |
| Maine |
14,375 |
2.8 |
118.3 |
0.4 |
1.1 |
295.3 |
108.9 |
| Maryland |
83,668 |
3.8 |
325.1 |
4.5 |
2.4 |
72.0 |
137.9 |
| Massachusetts |
110,254 |
4.3 |
278.4 |
1.1 |
0.9 |
247.3 |
324.2 |
| Michigan |
116,354 |
3.1 |
233.8 |
1.4 |
0.8 |
163.8 |
280.2 |
| Minnesota |
82,510 |
4.0 |
147.9 |
3.8 |
1.7 |
39.2 |
87.0 |
| Mississippi |
20,184 |
1.9 |
658.9 |
4.1 |
2.6 |
161.0 |
251.3 |
| Missouri |
72,875 |
3.2 |
204.5 |
3.8 |
2.2 |
53.9 |
93.0 |
| Montana |
6,800 |
1.7 |
132.4 |
0.5 |
0.0 |
254.1 |
—¶ |
| Nevada |
51,990 |
4.8 |
398.2 |
4.9 |
1.8 |
81.3 |
216.6 |
| New Hampshire |
13,868 |
2.7 |
187.5 |
1.2 |
0.6 |
155.3 |
337.8 |
| New Jersey |
136,271 |
4.1 |
152.6 |
1.3 |
0.7 |
117.2 |
219.3 |
| New Mexico |
18,675 |
2.4 |
428.4 |
2.5 |
1.4 |
169.2 |
314.0 |
| North Carolina |
105,707 |
2.9 |
748.3 |
5.3 |
2.7 |
140.0 |
278.2 |
| North Dakota |
4,840 |
1.7 |
165.3 |
1.1 |
0.0 |
150.4 |
— |
| Ohio |
146,033 |
3.4 |
214.3 |
2.9 |
1.4 |
73.3 |
157.5 |
| Oklahoma |
37,006 |
2.6 |
418.9 |
2.3 |
1.4 |
185.4 |
297.6 |
| Oregon |
60,932 |
4.0 |
313.5 |
2.8 |
2.2 |
111.9 |
142.1 |
| Pennsylvania |
162,848 |
3.3 |
256.1 |
1.6 |
0.8 |
159.3 |
310.5 |
| Rhode Island |
24,745 |
6.1 |
226.3 |
2.7 |
0.9 |
84.6 |
248.9 |
| South Carolina |
35,388 |
2.0 |
536.9 |
2.9 |
1.7 |
187.8 |
307.9 |
| South Dakota |
4,937 |
1.5 |
405.1 |
2.6 |
2.2 |
156.2 |
186.2 |
| Tennessee |
73,460 |
3.0 |
325.3 |
2.8 |
0.9 |
115.4 |
371.3 |
| Texas |
378,310 |
3.9 |
289.4 |
3.2 |
2.2 |
90.1 |
133.9 |
| Utah |
33,898 |
3.3 |
132.8 |
0.5 |
0.2 |
251.1 |
679.2 |
| Vermont |
7,142 |
2.9 |
126.0 |
0.0 |
0.0 |
— |
— |
| Virginia |
115,515 |
3.7 |
210.4 |
1.5 |
0.5 |
138.3 |
436.0 |
| Washington |
113,504 |
4.2 |
306.6 |
1.9 |
1.1 |
160.6 |
290.6 |
| West Virginia | 13,141 | 1.8 | 197.9 | 2.3 | 1.2 | 87.2 | 165.0 |
* Data based on 2015 cases reported to CDC by June 8, 2016.
† To optimize stability of the estimates, the analysis was limited to the 44 states that included sex of sex partner in ≥70% of male primary and secondary syphilis case reports for 2015.
§ Rate ratios were calculated as 1) the rate of primary and secondary syphilis among MSM divided by the rate among men who have sex with women only and 2) the rate among MSM divided by the rate among women. In this report “women” is used to describe both females aged ≥18 years (used for calculating rates for women), and females of unknown ages (used for calculating rates for men who had sex with women only). Rate ratios were rounded to tenths.
¶ Montana, North Dakota, and Vermont had no cases of primary and secondary syphilis reported among women for 2015, resulting in an undefined rate ratio comparing MSM with women. Vermont had no cases of primary and secondary syphilis reported among men who had sex with women only in 2015, resulting in an undefined rate ratio comparing MSM with men who have sex with women only..