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Division of Communicable Diseases
The Infectious & Zoonotic Disease Program

Lyme Disease Rate by County in New Jersey

County 1990 1991 1992 1993 1994 1995 1996 1997 1998
Cases Rate Cases Rate Cases Rate Cases Rate Cases Rate Cases Rate Cases Rate Cases Rate Cases Rate
Atlantic 79 35.2 75 33.4 29 12.9 29 12.9 17 7.6 25 10.9 101 43.9 67 29.1 76 31.9
Bergen 13 1.6 16 1.9 23 2.8 11 1.3 36 0.0 11 1.3 28 3.3 23 2.7 20 2.3
Burlington 147 37.2 55 13.9 40 9.9 49 12.4 93 23.5 120 30.0 154 38.5 126 31.5 101 24.0
Camden 40 8.0 16 3.2 11 2.2 12 2.3 2 0.0 19 3.7 62 12.2 39 7.6 12 2.4
Cape May 23 24.2 14 14.7 6 6.3 1 1.0 6 7.3 5 5.0 52 52.0 43 43.0 18 18.4
Cumberland 64 46.4 38 27.5 13 9.4 18 13.0 9 6.8 3 2.0 36 24.0 30 20.0 51 36.3
Essex 19 2.4 17 2.2 8 1.0 11 1.4 21 2.5 18 2.3 26 3.3 13 1.6 21 2.8
Gloucester 9 3.9 10 4.4 13 5.7 6 2.6 26 13.0 20 8.3 75 31.3 65 27.1 103 41.2
Hudson 5 0.9 2 0.4 2 0.4 0 0.0 3 0.1 2 0.4 3 0.5 6 1.1 4 0.7
Hunterdon 46 42.7 51 47.3 72 64.0 204 189.2 470 439.3 571 519.1 610 554.5 491 446.4 528 440.0
Mercer 30 9.2 46 14.1 37 11.0 33 10.1 61 18.8 55 16.2 101 29.7 85 25.0 92 27.9
Middlesex 36 5.4 59 8.8 23 3.4 24 3.5 35 5.2 80 11.8 71 10.4 80 11.8 75 10.4
Monmouth 162 29.3 133 24.1 80 13.9 76 13.7 62 11.2 109 19.5 110 19.6 105 18.8 75 12.5
Morris 50 11.9 82 19.5 119 28.5 104 24.7 287 68.2 235 54.7 270 62.8 330 76.7 291 63.3
Ocean 220 50.8 131 30.2 94 21.9 107 24.7 96 22.2 127 28.9 147 33.4 102 23.2 110 22.5
Passaic 9 2.0 11 2.4 6 1.1 3 0.7 7 1.5 9 2.0 6 1.3 5 1.1 15 3.1
Salem 25 38.3 9 13.8 12 18.4 7 10.8 23 35.4 6 7.5 42 52.5 47 58.8 17 26.2
Somerset 25 10.4 87 36.2 72 30.0 51 21.3 201 83.8 183 73.2 173 69.2 232 92.8 169 59.7
Sussex 21 16.0 19 14.5 7 5.3 2 1.5 24 18.5 17 12.1 21 15.0 26 18.8 26 18.2
Union 9 1.8 18 3.7 15 3.0 12 2.4 18 3.7 19 3.7 15 2.9 11 2.2 17 3.4
Warren 6 6.6 10 10.9 4 4.4 8 8.9 34 37.4 60 60.0 87 87.0 115 115.0 96 97.4
Unknown 29
0
2
1
1
9
0
0
0
TOTAL 1067 13.8 899 11.6 688 8.8 769 10.2 1532 19.8 1703 21.4 2190 27.7 2041 25.8 1917 23.6


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