Connecticut State The Connecticut Agricultural Experiment Station

Summary of Tick Testing Results for 2004

A total of 4873 ticks feeding on humans were submitted for identification in 2004. Of these, 4283 were tested for the presence of Borrelia burgdorferi, the causative organism of Lyme disease, and 1645 (38%) were found to carry this organism.  The names of the tick species and numbers of specimens received are shown in the table below.

Name of Species

Common Name

Total

Ixodes scapularis

Black-legged ("Deer") Tick

4495

Dermacentor variabilis

American Dog Tick

326

Amblyomma americanum

Lone Star Tick

47

Ixodes cookei

(normally on woodchucks)

3

Ixodes dentatus

(normally on rabbits)

1

Rhipicephalus sanguineus

Brown Dog Tick

1
 

Most of the ticks received by us are the black-legged or “deer” ticks. Below is a table comparing the numbers and infection rates of deer ticks over the past five years.

Year

Total Identified

Total Tested

Total Positive

Percent Positive

2000

6687

6299

1501

24

2001

5849

5588

1434

26

2002

6437

6212

1770

28

2003

5886

5673

1735

31

2004

4495

4231

1645

39

The number of deer ticks submitted from each town and the number infected are summarized by town for the year 2004. If the town is served by a health district, its totals are included with the town listed in the second column. For example, Ansonia is served by the Naugatuck Valley Health District, which is located in Seymour. Any ticks that may have been received from Ansonia through the health district are included in the totals for Seymour. Any ticks received from individuals in Ansonia would be listed separately for Ansonia. Those totals reflect the data for all the towns served by the health district. For a directory of local health departments and districts, see the state website at https://portal.ct.gov/DPH/Local-Health-Admin/LHA/Local-Health-Administration---Site-Map

Town Health District Town Total Identified Total Tested Total Positive Percent Positive

Andover

Mansfield

1

1

0

0.00%

Ansonia

Seymour

Ashford

Mansfield

Avon

230

219

76

34.70%

Barkhamsted

Avon

Beacon Falls

Seymour

Berlin

Wethersfield

11

11

4

36.36%

Bethany

North Haven

11

11

6

54.55%

Bethel

39

35

9

25.71%

Bethlehem

Torrington

Bloomfield

3

3

2

66.67%

Bolton

Mansfield

Bozrah

Norwich

Branford

33

30

12

40.00%

Bridgeport

10

10

6

60.00%

Bridgewater

Newtown

2

1

0

0.00%

Bristol

13

9

1

11.11%

Brookfield

48

38

13

34.21%

Brooklyn

Killingly

Burlington

Bristol

1

1

0

0.00%

Canaan

Torrington

Canterbury

Killingly

Canton

Avon

1

1

0

0.00%

Chaplin

Mansfield

Cheshire

79

74

24

32.43%

Chester

0

0

0

Clinton

Old Saybrook

5

5

0

0.00%

Colchester

7

7

3

42.86%

Colebrook

Avon

Columbia

Mansfield

1

1

0

0.00%

Cornwall

Torrington

Coventry

Mansfield

Cromwell

0

0

0

Danbury

2

1

1

100.00%

Darien

216

211

81

38.39%

Deep River

Old Saybrook

Derby

Seymour

1

1

1

100.00%

Durham

2

2

0

0.00%

East Granby

Avon

2

2

1

50.00%

East Haddam

East Hampton

East Hampton

3

3

2

66.67%

East Hartford

0

0

0

East Haven

Branford

East Lyme

Groton

2

2

0

0.00%

East Windsor

Enfield

Eastford

Killingly

Easton

38

33

12

36.36%

Ellington

Enfield

Enfield

10

10

3

30.00%

Essex

1

1

1

100.00%

Fairfield

8

6

3

50.00%

Farmington

Avon

1

1

0

0.00%

Franklin

Glastonbury

13

13

5

38.46%

Goshen

Torrington

Granby

Avon

5

5

0

0.00%

Greenwich

196

191

88

46.07%

Griswold

0

0

0

Groton

73

69

32

46.38%

Guilford

34

30

13

43.33%

Haddam

2

2

0

0.00%

Hamden

North Haven

28

28

6

21.43%

Hampton

Killingly

Hartford

2

2

1

50.00%

Hartland

Avon

Harwinton

Torrington

Hebron

East Hampton

1

1

1

100.00%

Kent

Torrington

2

2

1

50.00%

Killingly

0

0

0

Killingworth

4

4

2

50.00%

Lebanon

1

0

0

0.00%

Ledyard

Groton

Lisbon

0

0

0

Litchfield

Torrington

Lyme

0

0

0

Madison

14

14

6

42.86%

Manchester

12

11

3

27.27%

Mansfield

11

11

7

63.64%

Marlborough

East Hampton

Meriden

8

8

6

75.00%

Middlebury

16

16

6

37.50%

Middlefield

2

2

1

50.00%

Middletown

4

4

0

0.00%

Milford

11

11

3

27.27%

Monroe

Trumbull

1

1

0

0.00%

Montville

Norwich

Morris

Torrington

Naugatuck

Seymour

2

2

0

0.00%

New Britain

10

8

3

37.50%

New Canaan

297

265

103

38.87%

New Fairfield

13

10

1

10.00%

New Hartford

Avon

New Haven

24

21

5

23.81%

New London

Groton

1

1

1

100.00%

New Milford

32

31

12

38.71%

Newington

Wethersfield

3

3

1

33.33%

Newtown

305

262

113

43.13%

Norfolk

Torrington

North Branford

Branford

North Canaan

0

0

0

North Haven

34

34

14

41.18%

North Stonington

0

0

0

Norwalk

213

210

94

44.76%

Norwich

3

3

0

0.00%

Old Lyme

4

3

0

0.00%

Old Saybrook

2

2

2

100.00%

Orange

14

14

5

35.71%

Oxford

Southbury

2

2

0

0.00%

Plainfield

Killingly

Plainville

0

0

0

Plymouth

Torrington

2

2

0

0.00%

Pomfret

Killingly

Portland

East Hampton

Preston

0

0

0

Prospect

Cheshire

Putnam

Killingly

Redding

29

27

7

25.93%

Ridgefield

162

154

58

37.66%

Rocky Hill

Wethersfield

1

1

0

0.00%

Roxbury

Newtown

9

9

1

11.11%

Salem

1

1

1

100.00%

Salisbury

Torrington

1

1

1

100.00%

Scotland

Mansfield

1

1

0

0.00%

Seymour

81

78

22

28.21%

Sharon

0

0

0

Shelton

Seymour

Sherman

4

3

1

33.33%

Simsbury

Avon

4

4

2

50.00%

Somers

0

0

0

South Windsor

1

1

1

100.00%

Southbury

200

188

79

42.02%

Southington

37

28

11

39.29%

Sprague

Norwich

Stafford

Enfield

1

0

0

0.00%

Stamford

372

359

132

36.77%

Sterling

Killingly

Stonington

0

0

0

Stratford

38

37

22

59.46%

Suffield

Enfield

Thomaston

Torrington

Thompson

Killingly

Tolland

Mansfield

Torrington

629

619

246

39.74%

Trumbull

105

102

32

31.37%

Union

Killingly

Vernon

Enfield

2

2

0

0.00%

Voluntown

0

0

0

Wallingford

18

17

2

11.76%

Warren

Torrington

Washington

0

0

0

Waterbury

24

23

6

26.09%

Waterford

Groton

Watertown

Torrington

1

1

0

0.00%

West Hartford

Bloomfield

4

4

1

25.00%

West Haven

3

3

0

0.00%

Westbrook

1

1

0

0.00%

Weston

Westport

Westport

264

259

107

41.31%

Wethersfield

5

5

3

60.00%

Willington

Mansfield

Wilton

302

262

106

40.46%

Winchester

Torrington

Windham

Enfield

1

1

1

100.00%

Windsor

6

6

5

83.33%

Windsor Locks

Enfield

Wolcott

Cheshire

Woodbridge

North Haven

3

3

1

33.33%

Woodbury

Southbury

2

2

1

50.00%

Woodstock

Killingly

1

1

0

0.00%