Lyme Disease Data Tables: Historical Data

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Reported cases of Lyme disease by state or locality, 2007-2017†

Information regarding the collection and limitations of these surveillance data

Reported cases of Lyme disease by state or locality, 2007-2017 
State 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017
Confirmed		 2017
Probable		 2017
Incidence*
Alabama 13 6 3 1 9 13 11 28  14 17 25 16 0.5
Alaska 10 6 7 7 9 4 14 5  1 6 8 2 1.1
Arizona 2 2 3 2 8 7 22 14  8 8 18 10 0.3
Arkansas 1 0 0 0 0 0 0 0  0 0 2 4 0.1
California 75 74 117 126 79 61 90 54  83 90 84 61 0.2
Colorado 0 2 0 1 0 0 0 0  0 0 4 0 0.1
Connecticut 3058 2738 2751 1964 2004 1653 2111 1719  1873 1238 1381 670 38.5
Delaware 715 772 984 656 767 507 400 341  334 391 421 187 43.8
District of Columbia 116 71 53 34 N N 33 35  78 66 62 22 8.9
Florida 30 72 77 56 78 67 87 85  116 132 124 86 0.6
Georgia 11 35 40 10 32 31 8 4  8 4 8 0 0.1
Hawaii 0 0 0 0 0 0 0 0  0 0 0 0 0.0
Idaho 9 5 4 6 3 0 14 8  3 9 15 5 0.9
Illinois 149 108 136 135 194 204 337 233  287 233 218 55 1.7
Indiana 55 42 61 62 81 64 101 100  102 127 92 50 1.4
Iowa 123 85 77 68 72 92 153 110  130 76 112 143 3.6
Kansas 8 16 18 7 11 9 18 12  11 16 13 27 0.4
Kentucky 6 5 1 5 3 8 17 11  12 16 6 14 0.1
Louisiana 2 3 0 2 1 3 0 0  2 4 8 4 0.2
Maine 529 780 791 559 801 885 1127 1169  993 1151 1424 426 106.6
Maryland 2576 1746 1466 1163 938 1113 801 957  1249 1274 1194 697 19.7
Massachusetts 2988 3960 4019 2380 1801 3396 3816 3646  2922 146 321 89 4.7
Michigan 51 76 81 76 89 80 114 93  125 159 196 95 2.0
Minnesota 1238 1046 1063 1293 1185 911 1431 896  1174 1304 1408 910 25.2
Mississippi 1 1 0 0 3 1 0 2  4 1 1 0 0.0
Missouri 10 6 3 4 5 1 1 7  2 1 2 10 0.0
Montana 4 6 3 3 9 6 16 5  2 12 4 8 0.4
Nebraska 7 8 4 7 7 5 7 6  5 10 6 8 0.3
Nevada 15 9 10 2 3 10 11 4  5 4 7 10 0.2
New Hampshire 896 1211 996 830 887 1002 1324 622  436 691 956 425 71.2
New Jersey 3134 3214 4598 3320 3398 2732 2785 2589  3932 3332 3629 1463 40.3
New Mexico 5 4 1 3 2 1 0 0  0 0 3 0 0.1
New York 4165 5741 4134 2385 3118 2044 3512 2853  3252 2623 3502 1653 17.6
North Carolina 53 16 21 21 18 27 39 27  38 32 70 225 0.7
North Dakota 12 8 10 21 22 10 12 2  15 9 12 44 1.6
Ohio 33 40 51 21 36 49 74 94  112 122 233 37 2.0
Oklahoma 1 1 2 0 2 1 1 0  0 0 0 1 0.0
Oregon 6 18 12 7 9 5 12 3  3 13 13 71 0.3
Pennsylvania 3994 3818 4950 3298 4739 4146 4981 6470  7351 8988 9250 2650 72.2
Rhode Island 177 186 150 115 111 133 444 570  564 535 595 537 56.2
South Carolina 31 14 25 19 24 35 33 20  13 25 13 8 0.3
South Dakota 0 3 1 1 2 4 3 2  5 8 4 8 0.5
Tennessee 31 7 10 6 5 2 11 7  6 7 15 32 0.2
Texas 87 105 88 55 28 33 48 20  18 31 31 27 0.1
Utah 7 3 6 3 6 2 10 5  3 12 10 15 0.3
Vermont 138 330 323 271 476 386 674 442  491 488 646 446 103.6
Virginia 959 886 698 911 756 805 925 976  1102 976 1041 616 12.3
Washington 12 22 15 12 17 13 11 8  17 14 26 11 0.4
West Virginia 84 120 143 128 107 82 116 112  243 297 503 145 27.7
Wisconsin 1814 1493 1952 2505 2408 1368 1447 991  1309 1504 1794 1206 31.0
Wyoming 3 1 1 0 1 3 1 2  0 1 3 1 0.5
U.S. TOTAL 27,444 28,921 29,959 22,561 24,364 22,014 27,203 25,359  28,453 26,203 29,513 13,230 9.1
†confirmed cases presented for all years except most recent
*confirmed cases per 100,000 population
N = not notifiable

Lyme disease incidence rates by state, 2007-2017*

Information regarding the collection and limitations of these surveillance data

Lyme disease incidence rates by state, 2007-2017 
State 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 3-Year Average
Incidence
Alabama 0.3 0.1 0.1 0.0 0.2 0.3 0.2 0.6 0.3 0.3 0.5 0.4
Alaska 1.5 0.9 1.0 1.0 1.2 0.5 1.9 0.7 0.1 0.8 1.1 0.7
Arizona 0.0 0.0 0.0 0.0 0.1 0.1 0.3 0.2 0.1 0.1 0.3 0.2
Arkansas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0
California 0.2 0.2 0.3 0.4 0.0 0.2 0.2 0.1 0.2 0.2 0.2 0.2
Colorado 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0
Connecticut† 87.3 78.2 78.2 55.0 56.0 46.0 58.7 47.8 52.2 34.6 38.5 41.8
Delaware† 82.7 88.4 111.2 73.1 84.6 55.3 43.2 36.4 35.3 41.1 43.8 40.0
District of Columbia† 19.7 12.0 8.8 5.7 N N 5.1 5.3 11.6 9.7 8.9 10.1
Florida 0.2 0.4 0.4 0.3 0.4 0.3 0.4 0.4 0.6 0.6 0.6 0.6
Georgia 0.1 0.4 0.4 0.1 0.3 0.3 0.1 0.0 0.1 0.0 0.1 0.1
Hawaii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Idaho 0.6 0.3 0.3 0.4 0.2 0.0 0.9 0.5 0.2 0.5 0.9 0.5
Illinois 1.2 0.8 1.1 1.1 1.5 1.6 2.6 1.8 2.2 1.8 1.7 1.9
Indiana 0.9 0.7 0.9 1.0 1.2 1.0 1.5 1.5 1.5 1.9 1.4 1.6
Iowa 4.1 2.8 2.6 2.2 2.4 3.0 5.0 3.5 4.2 2.4 3.6 3.4
Kansas 0.3 0.6 0.6 0.2 0.4 0.3 0.6 0.4 0.4 0.6 0.4 0.5
Kentucky 0.1 0.1 0.0 0.1 0.1 0.2 0.4 0.2 0.3 0.4 0.1 0.3
Louisiana 0.0 0.1 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.1 0.2 0.1
Maine† 40.2 59.2 60.0 42.1 60.3 66.6 84.8 87.9 74.7 86.4 106.6 89.2
Maryland† 45.8 31.0 25.7 20.1 16.1 18.9 13.5 16.0 20.8 21.2 19.7 20.6
Massachusetts† 46.3 60.9 61.0 36.3 27.3 51.1 57.0 54.1 43.0 2.1 4.7 16.6
Michigan 0.5 0.8 0.8 0.8 0.9 0.8 1.2 0.9 1.3 1.6 2.0 1.6
Minnesota† 23.8 20.0 20.2 24.4 22.2 16.9 26.4 16.4 21.4 23.6 25.2 23.4
Mississippi 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.1 0.1 0.0 0.0 0.1
Missouri 0.2 0.1 0.1 0.1 0.1 0.0 0.0 0.1 0.0 0.0 0.0 0.0
Montana 0.4 0.6 0.3 0.3 0.9 0.6 1.6 0.5 0.2 1.2 0.4 0.6
Nebraska 0.4 0.4 0.2 0.4 0.4 0.3 0.4 0.3 0.3 0.5 0.3 0.4
Nevada 0.6 0.3 0.4 0.1 0.1 0.4 0.4 0.1 0.2 0.1 0.2 0.2
New Hampshire† 68.1 92.0 75.2 63.0 67.3 75.9 100.0 46.9 32.8 51.8 71.2 51.9
New Jersey† 36.1 37.0 52.8 37.8 38.5 30.8 31.3 29.0 43.9 37.3 40.3 40.5
New Mexico 0.3 0.2 0.0 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.1 0.0
New York† 21.6 29.5 21.2 12.3 16.0 10.4 17.9 14.4 16.4 13.3 17.6 15.8
North Carolina 0.6 0.2 0.2 0.2 0.2 0.3 0.4 0.3 0.4 0.3 0.7 0.5
North Dakota 1.9 1.2 1.5 3.1 3.2 1.4 1.7 0.3 2.0 1.2 1.6 1.6
Ohio 0.3 0.3 0.4 0.2 0.3 0.4 0.6 0.8 1.0 1.1 2.0 1.3
Oklahoma 0.0 0.0 0.1 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Oregon 0.2 0.5 0.3 0.2 0.2 0.1 0.3 0.1 0.1 0.3 0.3 0.2
Pennsylvania† 32.1 30.7 39.3 26.0 37.2 32.5 39.0 50.6 57.4 70.3 72.2 66.7
Rhode Island† 16.7 17.7 14.2 10.9 10.6 12.7 42.2 54.0 53.4 50.6 56.2 53.4
South Carolina 0.7 0.3 0.5 0.4 0.5 0.7 0.7 0.4 0.3 0.5 0.3 0.3
South Dakota 0.0 0.4 0.1 0.1 0.2 0.5 0.4 0.2 0.6 0.9 0.5 0.7
Tennessee 0.5 0.1 0.2 0.1 0.1 0.0 0.2 0.1 0.1 0.1 0.2 0.1
Texas 0.4 0.4 0.4 0.2 0.1 0.1 0.2 0.1 0.1 0.1 0.1 0.1
Utah 0.3 0.1 0.2 0.1 0.2 0.1 0.3 0.2 0.1 0.4 0.3 0.3
Vermont† 22.2 53.1 51.9 43.3 76.0 61.7 107.6 70.5 78.4 78.1 103.6 86.7
Virginia† 12.4 11.4 8.9 11.4 9.3 9.8 11.2 11.7 13.1 11.6 12.3 12.3
Washington 0.2 0.3 0.2 0.2 0.2 0.2 0.2 0.1 0.2 0.2 0.4 0.3
West Virginia† 4.6 6.6 7.9 6.9 5.8 4.4 6.3 6.1 13.2 16.2 27.7 19.0
Wisconsin† 32.4 26.5 34.5 44.0 42.2 23.9 25.2 17.2 22.7 26.0 31.0 26.6
Wyoming 0.6 0.2 0.2 0.0 0.2 0.5 0.2 0.3 0.0 0.2 0.5 0.2
U.S. Incidence 9.1 9.4 9.8 7.3 7.8 7.0 8.6 7.9 8.9 8.1 9.1 8.7
*incidence=confirmed cases per 100,000 persons
†High Incidence State (average incidence of at least 10 confirmed cases per 100,000 persons for previous three reporting years)
N= not notifiable
Page last reviewed: December 21, 2018
Content source: Centers for Disease Control and Prevention, National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Division of Vector-Borne Diseases (DVBD)