TABLE 2. States ranked from highest to lowest, by rates of primary and secondary syphilis cases overall and among men who have sex with men (MSM) and men who have sex with women only, and by rate ratios comparing the rates for MSM with the rates for men who have sex with women only and the rates for women — United States, 2015*.
| Rank† | Rate of primary and secondary syphilis per 100,000 population |
Rate ratio§ |
|||
|---|---|---|---|---|---|
| Overall primary and secondary syphilis | Primary and secondary syphilis among MSM | Primary and secondary syphilis among men who have sex with women only | MSM compared with men who have sex with women only | MSM compared with women | |
| 1 |
Louisiana |
North Carolina |
Louisiana |
Hawaii |
Hawaii |
| 2 |
California |
Mississippi |
North Carolina |
Maine |
Colorado |
| 3 |
North Carolina |
Louisiana |
Nevada |
Montana |
Utah |
| 4 |
Nevada |
South Carolina |
Maryland |
Utah |
Iowa |
| 5 |
Florida |
New Mexico |
Florida |
Massachusetts |
Virginia |
| 6 |
Arizona |
Oklahoma |
Mississippi |
Iowa |
Tennessee |
| 7 |
Oregon |
South Dakota |
California |
Colorado |
New Hampshire |
| 8 |
Maryland |
Nevada |
Missouri |
Indiana |
Massachusetts |
| 9 |
Illinois |
Hawaii |
Minnesota |
South Carolina |
New Mexico |
| 10 |
Mississippi |
Arizona |
Arkansas |
Oklahoma |
Pennsylvania |
| 11 |
Rhode Island |
Florida |
Arizona |
Kansas |
South Carolina |
| 12 |
Hawaii |
California |
Texas |
New Mexico |
Oklahoma |
| 13 |
Washington |
Tennessee |
Ohio |
Michigan |
Washington |
| 14 |
Texas |
Maryland |
South Carolina |
Connecticut |
Michigan |
| 15 |
Massachusetts |
Idaho |
Tennessee |
Mississippi |
North Carolina |
| 16 |
South Carolina |
Alabama |
Oregon |
Washington |
Indiana |
| 17 |
Alabama |
Arkansas |
Rhode Island |
Pennsylvania |
Mississippi |
| 18 |
New Mexico |
Oregon |
South Dakota |
South Dakota |
Rhode Island |
| 19 |
Oklahoma |
Illinois |
New Mexico |
New Hampshire |
Idaho |
| 20 |
Tennessee |
Washington |
Illinois |
North Dakota |
Arizona |
| 21 |
Pennsylvania |
Indiana |
Idaho |
North Carolina |
New Jersey |
| 22 |
Missouri |
Texas |
Alabama |
Virginia |
Nevada |
| 23 |
Ohio |
Massachusetts |
West Virginia |
Alabama |
Illinois |
| 24 |
Colorado |
Pennsylvania |
Oklahoma |
Idaho |
Alaska |
| 25 |
South Dakota |
Colorado |
Washington |
Illinois |
South Dakota |
| 26 |
Arkansas |
Michigan |
Kentucky |
New Jersey |
Alabama |
| 27 |
Minnesota |
Kansas |
Pennsylvania |
Arizona |
Kansas |
| 28 |
Indiana |
Rhode Island |
Virginia |
Tennessee |
West Virginia |
| 29 |
New Jersey |
Iowa |
Indiana |
Oregon |
Ohio |
| 30 |
Michigan |
Ohio |
Michigan |
Arkansas |
Florida |
| 31 |
Virginia |
Virginia |
Kansas |
Texas |
Oregon |
| 32 |
Idaho |
Missouri |
New Jersey |
West Virginia |
Arkansas |
| 33 |
Kentucky |
West Virginia |
Colorado |
California |
Maryland |
| 34 |
New Hampshire |
New Hampshire |
New Hampshire |
Rhode Island |
Texas |
| 35 |
Kansas |
North Dakota |
Hawaii |
Kentucky |
Kentucky |
| 36 |
West Virginia |
Kentucky |
Massachusetts |
Florida |
Connecticut |
| 37 |
Connecticut |
New Jersey |
North Dakota |
Nevada |
Maine |
| 38 |
Iowa |
Minnesota |
Alaska |
Ohio |
California |
| 39 |
Utah |
Utah |
Iowa |
Maryland |
Missouri |
| 40 |
Maine |
Montana |
Connecticut |
Louisiana |
Minnesota |
| 41 |
North Dakota |
Vermont |
Utah |
Alaska |
Louisiana |
| 42 |
Vermont |
Maine |
Montana |
Missouri |
—¶ |
| 43 |
Montana |
Connecticut |
Maine |
Minnesota |
— |
| 44 | Alaska | Alaska | Vermont | — | — |
* 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 the sex of sex partners 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).
¶ 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..