Table 38. Unknown Duration or Late Syphilis* — Reported Cases and Rates of Reported Cases by State/Territory and Region in Alphabetical Order, United States, 2015-2019

Table 38. Unknown Duration or Late Syphilis* — Reported Cases and Rates of Reported Cases by State/Territory and Region in Alphabetical Order, United States, 2015-2019
State/Territory Cases Rates per 100,000 Population
2015 2016 2017 2018 2019 2015 2016 2017 2018 2019
Alabama 197 232 347 354 461 4.1 4.8 7.1 7.2 9.4
Alaska 3 3 6 16 35 0.4 0.4 0.8 2.2 4.7
Arizona 532 680 829 1,243 1,444 7.8 9.8 11.8 17.3 20.1
Arkansas 145 131 156 287 414 4.9 4.4 5.2 9.5 13.7
California 4,966 6,216 7,787 9,609 11,817 12.7 15.8 19.7 24.3 29.9
Colorado 96 211 240 378 485 1.8 3.8 4.3 6.6 8.5
Connecticut 30 23 28 94 110 0.8 0.6 0.8 2.6 3.1
Delaware 21 34 88 63 55 2.2 3.6 9.1 6.5 5.7
District of Columbia 26 51 230 148 362 3.9 7.5 33.1 21.1 51.5
Florida 2,723 3,233 3,435 3,773 4,645 13.4 15.7 16.4 17.7 21.8
Georgia 1,245 1,478 1,580 1,773 2,144 12.2 14.3 15.1 16.9 20.4
Hawaii 14 13 10 27 34 1.0 0.9 0.7 1.9 2.4
Idaho 21 44 46 54 61 1.3 2.6 2.7 3.1 3.5
Illinois 1,285 1,623 1,399 1,570 1,760 10.0 12.7 10.9 12.3 13.8
Indiana 189 197 211 258 318 2.9 3.0 3.2 3.9 4.8
Iowa 88 127 96 112 126 2.8 4.1 3.1 3.5 4.0
Kansas 0 0 3 44 84 0.0 0.0 0.1 1.5 2.9
Kentucky 123 159 218 212 254 2.8 3.6 4.9 4.7 5.7
Louisiana 1,277 1,233 1,495 1,456 1,400 27.3 26.3 31.9 31.2 30.0
Maine 0 16 31 30 28 0.0 1.2 2.3 2.2 2.1
Maryland 749 719 783 913 888 12.5 12.0 12.9 15.1 14.7
Massachusetts 486 416 387 133 600 7.2 6.1 5.6 1.9 8.7
Michigan 393 424 447 622 652 4.0 4.3 4.5 6.2 6.5
Minnesota 220 289 327 330 354 4.0 5.2 5.9 5.9 6.3
Mississippi 136 107 71 50 91 4.5 3.6 2.4 1.7 3.0
Missouri 220 271 397 544 706 3.6 4.4 6.5 8.9 11.5
Montana 2 4 13 34 47 0.2 0.4 1.2 3.2 4.4
Nebraska 31 34 48 63 109 1.6 1.8 2.5 3.3 5.6
Nevada 133 347 575 775 985 4.6 11.8 19.2 25.5 32.5
New Hampshire 28 27 29 31 37 2.1 2.0 2.2 2.3 2.7
New Jersey 220 381 489 406 612 2.5 4.3 5.4 4.6 6.9
New Mexico 141 160 196 337 552 6.8 7.7 9.4 16.1 26.3
New York 2,975 3,484 3,592 3,404 3,232 15.0 17.6 18.1 17.4 16.5
North Carolina 783 756 1,015 1,075 1,231 7.8 7.5 9.9 10.4 11.9
North Dakota 14 16 22 30 42 1.8 2.1 2.9 3.9 5.5
Ohio 445 483 596 667 718 3.8 4.2 5.1 5.7 6.1
Oklahoma 83 90 95 253 577 2.1 2.3 2.4 6.4 14.6
Oregon 218 227 283 299 416 5.4 5.5 6.8 7.1 9.9
Pennsylvania 356 295 335 416 622 2.8 2.3 2.6 3.2 4.9
Rhode Island 48 81 79 117 213 4.5 7.7 7.5 11.1 20.1
South Carolina 41 36 40 27 92 0.8 0.7 0.8 0.5 1.8
South Dakota 21 15 20 23 28 2.4 1.7 2.3 2.6 3.2
Tennessee 575 713 543 688 898 8.7 10.7 8.1 10.2 13.3
Texas 4,047 4,666 6,035 5,819 5,707 14.7 16.7 21.3 20.3 19.9
Utah 73 106 97 152 169 2.4 3.5 3.1 4.8 5.3
Vermont 0 0 0 0 2 0.0 0.0 0.0 0.0 0.3
Virginia 276 235 551 659 722 3.3 2.8 6.5 7.7 8.5
Washington 366 400 480 504 632 5.1 5.5 6.5 6.7 8.4
West Virginia 17 45 25 64 109 0.9 2.5 1.4 3.5 6.0
Wisconsin 88 140 176 193 195 1.5 2.4 3.0 3.3 3.4
Wyoming 4 5 11 8 21 0.7 0.9 1.9 1.4 3.6
US TOTAL 26,170 30,676 35,992 40,137 47,296 8.1 9.5 11.1 12.3 14.5
Northeast 4,143 4,723 4,970 4,631 5,456 7.4 8.4 8.8 8.3 9.7
Midwest 2,994 3,619 3,742 4,456 5,092 4.4 5.3 5.5 6.5 7.5
South 12,464 13,918 16,707 17,614 20,050 10.3 11.4 13.5 14.1 16.1
West 6,569 8,416 10,573 13,436 16,698 8.6 11.0 13.7 17.2 21.4
American Samoa NR NR NR 0 0 0.0 0.0
Guam 16 10 5 9 21 9.9 6.0 3.0 5.4 12.5
Northern Mariana Islands NR NR NR 1 1 1.9 1.9
Puerto Rico 166 117 110 138 155 4.8 3.4 3.3 4.2 4.7
Virgin Islands 10 0 0 NR NR 9.7 0.0 0.0
TERRITORIES 192 127 115 148 177 5.1 3.4 3.2 4.2 5.0
TOTAL 26,362 30,803 36,107 40,285 47,473 8.1 9.4 11.0 12.2 14.4
 

* 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 Technical Notes for a detailed explanation of changes to the syphilis case definition.

NR = No report.

NOTE: See Technical Notes for more information on interpreting case counts and rates in US territories.

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