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Table 1. Sexually Transmitted Diseases — Reported Cases and Rates of Reported Cases per 100,000 Population, United States, 1941–2016

Year* Syphilis Chlamydia Gonorrhea Chancroid
All Stages† Primary
and
Secondary		 Early
Latent		 Late and
Late Latent‡		 Congenital
Cases Rate Cases Rate Cases Rate Cases Rate Cases Rate§ Cases Rate Cases Rate Cases Rate
1941 485,560 368.2 68,231 51.7 109,018 82.6 202,984 153.9 17,600 651.1 NR   193,468 146.7 3,384 2.5
1942 479,601 363.4 75,312 57.0 116,245 88.0 202,064 153.1 16,918 566.0 NR   212,403 160.9 5,477 4.1
1943 575,593 447.0 82,204 63.8 149,390 116.0 251,958 195.7 16,164 520.7 NR   275,070 213.6 8,354 6.4
1944 467,755 367.9 78,443 61.6 123,038 96.7 202,848 159.6 13,578 462.0 NR   300,676 236.5 7,878 6.1
1945 359,114 282.3 77,007 60.5 101,719 79.9 142,187 111.8 12,339 431.7 NR   287,181 225.8 5,515 4.3
1946 363,647 271.7 94,957 70.9 107,924 80.6 125,248 93.6 12,106 354.9 NR   368,020 275.0 7,091 5.2
1947 355,592 252.3 93,545 66.4 104,124 73.9 122,089 86.6 12,200 319.6 NR   380,666 270.0 9,515 6.7
1948 314,313 218.2 68,174 47.3 90,598 62.9 123,312 85.6 13,931 383.0 NR   345,501 239.8 7,661 5.3
1949 256,463 175.3 41,942 28.7 75,045 51.3 116,397 79.5 13,952 382.4 NR   317,950 217.3 6,707 4.6
1950 217,558 146.0 23,939 16.7 59,256 39.7 113,569 70.2 13,377 368.3 NR   286,746 192.5 4,977 3.3
1951 174,924 116.1 14,485 9.6 43,316 28.7 98,311 65.2 11,094 290.4 NR   254,470 168.9 4,233 2.8
1952 167,762 110.2 10,449 6.9 36,454 24.0 105,238 69.1 8,553 218.8 NR   244,957 160.8 3,738 2.5
1953 148,573 95.9 8,637 5.6 28,295 18.3 98,870 63.8 7,675 193.9 NR   238,340 153.9 3,338 2.2
1954 130,697 82.9 7,147 4.5 23,861 15.1 89,123 56.5 6,676 164.0 NR   242,050 153.5 3,003 1.9
1955 122,392 76.2 6,454 4.0 20,054 12.5 86,526 53.8 5,354 130.7 NR   236,197 147.0 2,649 1.7
1956 130,201 78.7 6,392 3.9 19,783 12.0 95,097 57.5 5,491 130.4 NR   224,346 135.7 2,135 1.3
1957 123,758 73.5 6,576 3.9 17,796 10.6 91,309 54.2 5,288 123.0 NR   214,496 127.4 1,637 1.0
1958 113,884 66.4 7,176 4.2 16,556 9.7 83,027 48.4 4,866 114.6 NR   232,386 135.6 1,595 0.9
1959 120,824 69.2 9,799 5.6 17,025 9.8 86,740 49.7 5,130 119.7 NR   240,254 137.6 1,537 0.9
1960 122,538 68.8 16,145 9.1 18,017 10.1 81,798 45.9 4,416 103.7 NR   258,933 145.4 1,680 0.9
1961 124,658 68.8 19,851 11.0 19,486 10.8 79,304 43.8 4,163 97.5 NR   264,158 145.8 1,438 0.8
1962 126,245 68.7 21,067 11.5 19,585 10.7 79,533 43.3 4,070 97.7 NR   263,714 143.6 1,344 0.7
1963 124,137 66.5 22,251 11.9 18,235 9.8 78,076 41.8 4,031 98.4 NR   278,289 149.0 1,220 0.7
1964 114,325 60.4 22,969 12.1 17,781 9.4 68,629 36.3 3,516 87.3 NR   300,666 158.9 1,247 0.7
1965 112,842 58.9 23,338 12.2 17,458 9.1 67,317 35.1 3,564 94.8 NR   324,925 169.5 982 0.5
1966 105,159 54.2 21,414 11.0 15,950 8.2 63,541 32.7 3,170 87.9 NR   351,738 181.2 838 0.4
1967 102,581 52.2 21,053 10.7 15,554 7.9 61,975 31.5 2,894 82.2 NR   404,836 205.9 784 0.4
1968 96,271 48.4 19,019 9.6 15,150 7.6 58,564 29.4 2,381 68.0 NR   464,543 233.4 845 0.4
1969 92,162 45.7 19,130 9.5 15,402 7.6 54,587 27.1 2,074 57.6 NR   534,872 265.4 1,104 0.5
1970 91,382 44.8 21,982 10.8 16,311 8.0 50,348 24.7 1,953 52.3 NR   600,072 294.2 1,416 0.7
1971 95,997 46.4 23,783 11.5 19,417 9.4 49,993 24.2 2,052 57.7 NR   670,268 324.1 1,320 0.6
1972 91,149 43.6 24,429 11.7 20,784 9.9 43,456 20.8 1,758 54.0 NR   767,215 366.6 1,414 0.7
1973 87,469 41.4 24,825 11.7 23,584 11.2 37,054 17.5 1,527 48.7 NR   842,621 398.7 1,165 0.6
1974 83,771 39.3 25,385 11.9 25,124 11.8 31,854 14.9 1,138 36.0 NR   906,121 424.7 945 0.4
1975 80,356 37.3 25,561 11.9 26,569 12.3 27,096 12.6 916 29.1 NR   999,937 464.1 700 0.3
1976 71,761 33.0 23,731 10.9 25,363 11.7 21,905 10.1 626 19.8 NR   1,001,994 460.6 628 0.3
1977 64,621 29.4 20,399 9.3 21,329 9.7 22,313 10.2 463 13.9 NR   1,002,219 456.0 455 0.2
1978 64,875 29.2 21,656 9.8 19,628 8.8 23,038 10.4 434 13.0 NR   1,013,436 456.3 521 0.2
1979 67,049 29.9 24,874 11.1 20,459 9.1 21,301 9.5 332 9.5 NR   1,004,058 447.1 840 0.4
1980 68,832 30.3 27,204 12.0 20,297 8.9 20,979 9.2 277 7.7 NR   1,004,029 442.1 788 0.3
1981 72,799 31.7 31,266 13.6 21,033 9.2 20,168 8.8 287 7.9 NR   990,864 431.8 850 0.4
1982 75,579 32.6 33,613 14.5 21,894 9.5 19,779 8.5 259 7.0 NR   960,633 414.7 1,392 0.6
1983 74,637 31.9 32,698 14.0 23,738 10.2 17,896 7.7 239 6.6 NR   900,435 385.1 847 0.4
1984 69,872 29.6 28,607 12.1 23,131 9.8 17,829 7.6 305 8.3 7,594 6.5 878,556 372.5 665 0.3
1985 67,563 28.4 27,131 11.4 21,689 9.1 18,414 7.7 329 8.7 25,848 17.4 911,419 383.0 2,067 0.9
1986 67,779 28.2 27,667 11.5 21,656 9.0 18,046 7.5 410 10.9 58,001 35.2 892,229 371.5 3,045 1.3
1987 87,286 36.0 35,585 14.7 28,233 11.7 22,988 9.5 480 12.6 91,913 50.8 787,532 325.0 4,986 2.1
1988 104,546 42.8 40,474 16.6 35,968 14.7 27,363 11.2 741 19.0 157,854 87.1 738,160 301.9 4,891 2.0
1989 115,089 46.6 45,826 18.6 45,394 18.4 22,032 8.9 1,837 45.5 200,904 102.5 733,294 297.1 4,697 1.9
1990 135,590 54.3 50,578 20.3 55,397 22.2 25,750 10.3 3,865 92.9 323,663 160.2 690,042 276.4 4,212 1.7
1991 128,719 50.9 42,950 17.0 53,855 21.3 27,490 10.9 4,424 107.6 381,228 179.7 621,918 245.8 3,476 1.4
1992 114,730 44.7 34,009 13.3 49,929 19.5 26,725 10.4 4,067 100.0 409,694 182.3 502,858 196.0 1,906 0.7
1993 102,612 39.5 26,527 10.2 41,919 16.1 30,746 11.8 3,420 85.5 405,332 178.0 444,649 171.1 1,292 0.5
1994 82,713 31.4 20,641 7.8 32,017 12.2 27,603 10.5 2,452 62.0 451,785 192.5 419,602 163.9 782 0.3
1995 69,359 26.0 16,543 6.2 26,657 10.0 24,296 9.1 1,863 47.8 478,577 187.8 392,651 147.5 607 0.2
1996 53,240 19.8 11,405 4.2 20,187 7.5 20,366 7.6 1,282 32.9 492,631 190.6 328,169 121.8 386 0.1
1997 46,716 17.1 8,556 3.1 16,631 6.1 20,447 7.5 1,082 27.9 537,904 205.5 327,665 120.2 246 0.1
1998 38,289 13.9 7,007 2.5 12,696 4.6 17,743 6.4 843 21.4 614,250 231.8 356,492 129.2 189 0.1
1999 35,386 12.7 6,617 2.4 11,534 4.1 16,655 6.0 580 14.6 662,647 247.2 360,813 129.3 110 0.0
2000 31,618 11.2 5,979 2.1 9,465 3.4 15,594 5.5 580 14.3 709,452 251.4 363,136 128.7 78 0.0
2001 32,286 11.3 6,103 2.1 8,701 3.0 16,976 5.9 506 12.6 783,242 274.5 361,705 126.8 38 0.0
2002 32,919 11.4 6,862 2.4 8,429 2.9 17,168 6.0 460 11.4 834,555 289.4 351,852 122.0 48 0.0
2003 34,289 11.8 7,177 2.5 8,361 2.9 18,319 6.3 432 10.6 877,478 301.7 335,104 115.2 54 0.0
2004 33,423 11.4 7,980 2.7 7,768 2.6 17,300 5.9 375 9.1 929,462 316.5 330,132 112.4 30 0.0
2005 33,288 11.2 8,724 2.9 8,176 2.8 16,049 5.4 339 8.2 976,445 329.4 339,593 114.6 17 0.0
2006 36,958 12.3 9,756 3.3 9,186 3.1 17,644 5.9 372 8.7 1,030,911 344.3 358,366 119.7 19 0.0
2007 40,925 13.6 11,466 3.8 10,768 3.6 18,256 6.1 435 10.1 1,108,374 367.5 355,991 118.0 23 0.0
2008 46,292 15.2 13,500 4.4 12,401 4.1 19,945 6.6 446 10.5 1,210,523 398.1 336,742 110.7 25 0.0
2009 44,832 14.6 13,997 4.6 13,066 4.3 17,338 5.6 431 10.4 1,244,180 405.3 301,174 98.1 28 0.0
2010 45,844 14.8 13,774 4.5 13,604 4.4 18,079 5.9 387 9.7 1,307,893 423.6 309,341 100.2 24 0.0
2011 46,040 14.8 13,970 4.5 13,136 4.2 18,576 6.0 358 9.1 1,412,791 453.4 321,849 103.3 8 0.0
2012 49,915 15.9 15,667 5.0 14,503 4.6 19,411 6.2 334 8.4 1,422,976 453.3 334,826 106.7 15 0.0
2013 56,484 17.9 17,375 5.5 16,929 5.4 21,819 6.9 361 9.2 1,401,906 443.5 333,004 105.3 10 0.0
2014 63,453 19.9 19,999 6.3 19,452 6.1 23,541 7.4 461 11.6 1,441,789 452.2 350,062 109.8 6 0.0
2015 74,707 23.2 23,872 7.4 24,173 7.5 26,170 8.1 492 12.3 1,526,658 475.0 395,216 123.0 11 0.0
2016 88,042 27.4 27,814 8.7 28,924 9.0 30,676 9.5 628 15.7 1,598,354 497.3 468,514 145.8 7 0.0

* For 1941–1946, data were reported for the federal fiscal year ending June 30 of the year indicated. From 1947 to the present, data were reported for the calendar year ending December 31. For 1941–1958, data for Alaska and Hawaii were not included.

† Includes stage of syphilis not stated.

‡ Late and late latent syphilis includes late latent syphilis, latent syphilis of unknown duration, neurosyphilis, late syphilis with clinical manifestations other than neurosyphilis, and late syphilis with clinical manifestations (including late benign syphilis and cardiovascular syphilis).

§ Rates include all cases of congenitally acquired syphilis per 100,000 live births. As of 1995, cases of congenital syphilis are obtained in hardcopy and electronic format on the basis of case reporting form CDC 73.126.

NR = No report.

NOTE: Adjustments to the number of cases reported from state health departments were made for hardcopy forms and for electronic data submissions through June 7, 2017. The number of cases and the rates shown here supersede those published in previous reports. See Section A1.1 in the Appendix for more information. Cases and rates shown in this table exclude the outlying areas of Guam, Puerto Rico, and Virgin Islands. Case definitions have changed over time. See Section Appendix C.1 in the Appendix for more information.

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