Table 38. Unknown Duration or Late Syphilis* — Reported Cases and Rates of Reported Cases by State/Territory and Region in Alphabetical Order, United States, 2014–2018
| State/Territory | Cases | Rates per 100,000 Population | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 2014 | 2015 | 2016 | 2017 | 2018 | 2014 | 2015 | 2016 | 2017 | 2018 | |
| Alabama | 167 | 197 | 232 | 347 | 354 | 3.4 | 4.1 | 4.8 | 7.1 | 7.3 |
| Alaska | 5 | 3 | 3 | 6 | 16 | 0.7 | 0.4 | 0.4 | 0.8 | 2.2 |
| Arizona | 558 | 532 | 680 | 829 | 1,243 | 8.3 | 7.8 | 9.8 | 11.8 | 17.7 |
| Arkansas | 110 | 145 | 131 | 156 | 287 | 3.7 | 4.9 | 4.4 | 5.2 | 9.6 |
| California | 4,110 | 4,966 | 6,216 | 7,787 | 9,609 | 10.6 | 12.7 | 15.8 | 19.7 | 24.3 |
| Colorado | 5 | 96 | 211 | 240 | 378 | 0.1 | 1.8 | 3.8 | 4.3 | 6.7 |
| Connecticut | 21 | 30 | 23 | 28 | 94 | 0.6 | 0.8 | 0.6 | 0.8 | 2.6 |
| Delaware | 30 | 21 | 34 | 88 | 63 | 3.2 | 2.2 | 3.6 | 9.1 | 6.5 |
| District of Columbia | 23 | 26 | 51 | 230 | 148 | 3.5 | 3.9 | 7.5 | 33.1 | 21.3 |
| Florida | 2,429 | 2,723 | 3,233 | 3,435 | 3,773 | 12.2 | 13.4 | 15.7 | 16.4 | 18.0 |
| Georgia | 1,055 | 1,245 | 1,478 | 1,580 | 1,773 | 10.4 | 12.2 | 14.3 | 15.1 | 17.0 |
| Hawaii | 13 | 14 | 13 | 10 | 27 | 0.9 | 1.0 | 0.9 | 0.7 | 1.9 |
| Idaho | 22 | 21 | 44 | 46 | 54 | 1.3 | 1.3 | 2.6 | 2.7 | 3.1 |
| Illinois | 1,087 | 1,285 | 1,623 | 1,399 | 1,570 | 8.4 | 10.0 | 12.7 | 10.9 | 12.3 |
| Indiana | 170 | 189 | 197 | 211 | 258 | 2.6 | 2.9 | 3.0 | 3.2 | 3.9 |
| Iowa | 84 | 88 | 127 | 96 | 112 | 2.7 | 2.8 | 4.1 | 3.1 | 3.6 |
| Kansas | 48 | 0 | 0 | 3 | 44 | 1.7 | 0.0 | 0.0 | 0.1 | 1.5 |
| Kentucky | 117 | 123 | 159 | 218 | 212 | 2.7 | 2.8 | 3.6 | 4.9 | 4.8 |
| Louisiana | 1,180 | 1,277 | 1,233 | 1,495 | 1,456 | 25.4 | 27.3 | 26.3 | 31.9 | 31.1 |
| Maine | 0 | 0 | 16 | 31 | 30 | 0.0 | 0.0 | 1.2 | 2.3 | 2.2 |
| Maryland | 481 | 749 | 719 | 783 | 913 | 8.0 | 12.5 | 12.0 | 12.9 | 15.1 |
| Massachusetts | 227 | 486 | 416 | 387 | 133 | 3.4 | 7.2 | 6.1 | 5.6 | 1.9 |
| Michigan | 416 | 393 | 424 | 447 | 622 | 4.2 | 4.0 | 4.3 | 4.5 | 6.2 |
| Minnesota | 215 | 220 | 289 | 327 | 330 | 3.9 | 4.0 | 5.2 | 5.9 | 5.9 |
| Mississippi | 116 | 136 | 107 | 71 | 50 | 3.9 | 4.5 | 3.6 | 2.4 | 1.7 |
| Missouri | 178 | 220 | 271 | 397 | 544 | 2.9 | 3.6 | 4.4 | 6.5 | 8.9 |
| Montana | 0 | 2 | 4 | 13 | 34 | 0.0 | 0.2 | 0.4 | 1.2 | 3.2 |
| Nebraska | 26 | 31 | 34 | 48 | 63 | 1.4 | 1.6 | 1.8 | 2.5 | 3.3 |
| Nevada | 142 | 133 | 347 | 575 | 775 | 5.0 | 4.6 | 11.8 | 19.2 | 25.9 |
| New Hampshire | 21 | 28 | 27 | 29 | 31 | 1.6 | 2.1 | 2.0 | 2.2 | 2.3 |
| New Jersey | 263 | 220 | 381 | 489 | 406 | 2.9 | 2.5 | 4.3 | 5.4 | 4.5 |
| New Mexico | 80 | 141 | 160 | 196 | 337 | 3.8 | 6.8 | 7.7 | 9.4 | 16.1 |
| New York | 3,073 | 2,975 | 3,484 | 3,592 | 3,404 | 15.6 | 15.0 | 17.6 | 18.1 | 17.1 |
| North Carolina | 791 | 783 | 756 | 1,015 | 1,075 | 8.0 | 7.8 | 7.5 | 9.9 | 10.5 |
| North Dakota | 16 | 14 | 16 | 22 | 30 | 2.2 | 1.8 | 2.1 | 2.9 | 4.0 |
| Ohio | 381 | 445 | 483 | 596 | 667 | 3.3 | 3.8 | 4.2 | 5.1 | 5.7 |
| Oklahoma | 59 | 83 | 90 | 95 | 253 | 1.5 | 2.1 | 2.3 | 2.4 | 6.4 |
| Oregon | 159 | 218 | 227 | 283 | 299 | 4.0 | 5.4 | 5.5 | 6.8 | 7.2 |
| Pennsylvania | 346 | 356 | 295 | 335 | 416 | 2.7 | 2.8 | 2.3 | 2.6 | 3.2 |
| Rhode Island | 40 | 48 | 81 | 79 | 117 | 3.8 | 4.5 | 7.7 | 7.5 | 11.0 |
| South Carolina | 28 | 41 | 36 | 40 | 27 | 0.6 | 0.8 | 0.7 | 0.8 | 0.5 |
| South Dakota | 16 | 21 | 15 | 20 | 23 | 1.9 | 2.4 | 1.7 | 2.3 | 2.6 |
| Tennessee | 502 | 575 | 713 | 543 | 688 | 7.7 | 8.7 | 10.7 | 8.1 | 10.2 |
| Texas | 4,110 | 4,047 | 4,666 | 6,035 | 5,819 | 15.2 | 14.7 | 16.7 | 21.3 | 20.6 |
| Utah | 61 | 73 | 106 | 97 | 152 | 2.1 | 2.4 | 3.5 | 3.1 | 4.9 |
| Vermont | 0 | 0 | 0 | 0 | 0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Virginia | 137 | 276 | 235 | 551 | 659 | 1.6 | 3.3 | 2.8 | 6.5 | 7.8 |
| Washington | 310 | 366 | 400 | 480 | 504 | 4.4 | 5.1 | 5.5 | 6.5 | 6.8 |
| West Virginia | 4 | 17 | 45 | 25 | 64 | 0.2 | 0.9 | 2.5 | 1.4 | 3.5 |
| Wisconsin | 108 | 88 | 140 | 176 | 193 | 1.9 | 1.5 | 2.4 | 3.0 | 3.3 |
| Wyoming | 1 | 4 | 5 | 11 | 8 | 0.2 | 0.7 | 0.9 | 1.9 | 1.4 |
| US TOTAL | 23,541 | 26,170 | 30,676 | 35,992 | 40,137 | 7.4 | 8.1 | 9.5 | 11.1 | 12.3 |
| Northeast | 3,991 | 4,143 | 4,723 | 4,970 | 4,631 | 7.1 | 7.4 | 8.4 | 8.8 | 8.2 |
| Midwest | 2,745 | 2,994 | 3,619 | 3,742 | 4,456 | 4.1 | 4.4 | 5.3 | 5.5 | 6.5 |
| South | 11,339 | 12,464 | 13,918 | 16,707 | 17,614 | 9.5 | 10.3 | 11.4 | 13.5 | 14.2 |
| West | 5,466 | 6,569 | 8,416 | 10,573 | 13,436 | 7.3 | 8.6 | 11.0 | 13.7 | 17.4 |
| American Samoa | NR | NR | NR | NR | 0 | — | — | — | — | 0.0 |
| Guam | 5 | 16 | 10 | 5 | 9 | 3.1 | 9.9 | 6.0 | 3.0 | 5.4 |
| Northern Mariana Islands | NR | NR | NR | NR | 1 | — | — | — | — | 1.9 |
| Puerto Rico | 101 | 166 | 117 | 110 | 138 | 2.8 | 4.8 | 3.4 | 3.3 | 4.1 |
| Virgin Islands | 4 | 10 | 0 | 0 | NR | 3.8 | 9.7 | 0.0 | 0.0 | — |
| TERRITORIES | 110 | 192 | 127 | 115 | 148 | 2.9 | 5.1 | 3.4 | 3.2 | 4.1 |
| TOTAL | 23,651 | 26,362 | 30,803 | 36,107 | 40,285 | 7.3 | 8.1 | 9.4 | 11.0 | 12.2 |
* The case classification of ‘Unknown duration or late syphilis’ went into effect in January 2018. During 2014–2017, cases in this category include cases classified as late latent syphilis and late syphilis with clinical manifestations. See Appendix A1.9 for a detailed explanation of changes to the syphilis case definition.
NR = No report.
NOTE: See Section A1.11 in the Appendix for more information on interpreting case counts and rates in US territories.
Page last reviewed: August 20, 2019