CAES: Summary of Tick Testing Results for 2009

Summary of Tick Testing Results for 2009

 

 

A total of 4031 ticks feeding on humans were submitted for identification in 2009. Of these, 1802* were tested for the presence of Borrelia burgdorferi, the causative organism of Lyme disease, and 676 (37.5%) 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

3672

Dermacentor variabilis

American Dog Tick

285

Amblyomma americanum

Lone Star Tick

63

Ixodes cookei

(normally on woodchucks)

1

Ixodes ricinus

Sheep 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 Connecticut deer ticks over the past five years.

 

Year

Total Identified

Total Tested

Total Positive

Percent Positive

2005

6123

5897

1613

27

2006

4855

2314*

520

22

2007

2602

1388

479

35

2008

3120

1470

340

23

2009

3669

1768

666

38

 

*Note:  As of January 1, 2006, unengorged ticks are no longer being tested for Borrelia burgdorferi.  Research has shown that unengorged ticks, those that have not ingested blood, are unlikely to transmit the disease organism.

 

The number of deer ticks submitted from each town and the number infected are summarized by town for the year 2009. 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://www.han.ct.gov/local_health/.

 

 

Town

Hlth. Dist. Town

Total Identified

Total Tested

Total Positive

Percent Positive

Andover

Mansfield

 

 

 

 

Ansonia

Seymour

2

1

0

0.00%

Ashford

Mansfield

 

 

 

 

Avon

 

18

10

7

70.00%

Barkhamsted

 

2

2

2

100.00%

Beacon Falls

Seymour

2

0

0

0.00%

Berlin

Wethersfield

4

2

1

50.00%

Bethany

North Haven

8

5

1

20.00%

Bethel

 

46

19

9

47.37%

Bethlehem

Torrington

 

 

 

 

Bloomfield

 

6

3

1

33.33%

Bolton

Mansfield

 

 

 

 

Bozrah

Norwich

 

 

 

 

Branford

 

20

11

6

54.55%

Bridgeport

 

11

6

2

33.33%

Bridgewater

Newtown

 

 

 

 

Bristol

 

32

16

3

18.75%

Brookfield

 

61

25

10

40.00%

Brooklyn

 

2

1

1

100.00%

Burlington

Bristol

2

2

2

100.00%

Canaan

Torrington

 

 

 

 

Canterbury

Brooklyn

 

 

 

 

Canton

 

7

5

2

40.00%

Chaplin

Mansfield

 

 

 

 

Cheshire

 

76

28

8

28.57%

Chester

 

 

 

 

 

Clinton

Old Saybrook

2

1

0

0.00%

Colchester

 

4

1

1

100.00%

Colebrook

 

1

0

0

0.00%

Columbia

Mansfield

 

 

 

 

Cornwall

Torrington

 

 

 

 

Coventry

Mansfield

2

2

1

50.00%

Cromwell

 

5

2

1

50.00%

Danbury

 

5

3

2

66.67%

Darien

 

166

65

24

36.92%

Deep River

Old Saybrook

 

 

 

 

Derby

Seymour

4

1

1

100.00%

Durham

 

2

2

0

0.00%

East Granby

 

1

1

1

100.00%

East Haddam

East Hampton

4

3

1

33.33%

East Hampton

 

14

6

1

16.67%

East Hartford

 

2

0

0

0.00%

East Haven

Branford

6

2

0

0.00%

East Lyme

Groton

2

2

1

50.00%

East Windsor

Enfield

1

1

1

100.00%

Eastford

Brooklyn

1

1

0

0.00%

Easton

 

26

9

2

22.22%

Ellington

Enfield

1

0

0

0.00%

Enfield

 

8

5

2

40.00%

Essex

 

1

0

0

0.00%

Fairfield

 

7

6

3

50.00%

Farmington

 

6

2

1

50.00%

Franklin

 

1

1

0

0.00%

Glastonbury

 

9

3

2

66.67%

Goshen

Torrington

 

 

 

 

Granby

 

7

5

1

20.00%

Greenwich

 

1

0

0

0.00%

Griswold

 

 

 

 

 

Groton

 

62

24

11

45.83%

Guilford

 

18

10

2

20.00%

Haddam

East Hampton

20

9

3

33.33%

Hamden

North Haven

18

9

4

44.44%

Hampton

Brooklyn

 

 

 

 

Hartford

 

5

3

2

66.67%

Hartland

 

2

1

1

100.00%

Harwinton

Torrington

1

1

0

0.00%

Hebron

East Hampton

1

1

0

0.00%

Kent

Torrington

1

1

0

0.00%

Killingly

Brooklyn

2

2

1

50.00%

Killingworth

 

4

2

1

50.00%

Lebanon

 

 

 

 

 

Ledyard

Groton

 

 

 

 

Lisbon

 

 

 

 

 

Litchfield

Torrington

 

 

 

 

Lyme

 

 

 

 

 

Madison

 

5

3

0

0.00%

Manchester

 

9

4

2

50.00%

Mansfield

 

19

11

5

45.45%

Marlborough

East Hampton

 

 

 

 

Meriden

 

7

5

0

0.00%

Middlebury

 

20

13

5

38.46%

Middlefield

 

1

1

1

100.00%

Middletown

 

4

2

0

0.00%

Milford

 

46

24

12

50.00%

Monroe

Trumbull

1

1

1

100.00%

Montville

Norwich

 

 

 

 

Morris

Torrington

 

 

 

 

Naugatuck

Seymour

 

 

 

 

New Britain

 

25

16

3

18.75%

New Canaan

 

93

64

25

39.06%

New Fairfield

 

7

3

0

0.00%

New Hartford

 

7

2

2

100.00%

New Haven

 

19

11

2

18.18%

New London

Groton

 

 

 

 

New Milford

 

13

7

2

28.57%

Newington

Wethersfield

 

 

 

 

Newtown

 

299

117

51

43.59%

Norfolk

Torrington

 

 

 

 

North Branford

Branford

 

 

 

 

North Canaan

Torrington

 

 

 

 

North Haven

 

31

20

6

30.00%

North Stonington

 

2

1

1

100.00%

Norwalk

 

309

146

52

35.62%

Norwich

 

8

3

2

66.67%

Old Lyme

 

1

0

0

0.00%

Old Saybrook

 

14

6

0

0.00%

Orange

 

16

10

5

50.00%

Oxford

Southbury

1

1

1

100.00%

Plainfield

Brooklyn

1

1

0

0.00%

Plainville

 

3

0

0

0.00%

Plymouth

Torrington

1

0

0

0.00%

Pomfret

Brooklyn

 

 

 

 

Portland

East Hampton

 

 

 

 

Preston

 

 

 

 

 

Prospect

Cheshire

 

 

 

 

Putnam

Brooklyn

 

 

 

 

Redding

 

67

30

12

40.00%

Ridgefield

 

145

61

20

32.79%

Rocky Hill

Wethersfield

3

2

1

50.00%

Roxbury

Newtown

14

7

3

42.86%

Salem

 

 

 

 

 

Salisbury

Torrington

 

 

 

 

Scotland

Mansfield

 

 

 

 

Seymour

 

114

72

33

45.83%

Sharon

 

1

1

1

100.00%

Shelton

Seymour

1

1

1

100.00%

Sherman

 

1

1

0

0.00%

Simsbury

 

40

18

4

22.22%

Somers

 

1

1

1

100.00%

South Windsor

 

7

2

1

50.00%

Southbury

 

156

73

27

36.99%

Southington

 

43

17

8

47.06%

Sprague

Norwich

 

 

 

 

Stafford

Enfield

 

 

 

 

Stamford

 

423

189

63

33.33%

Sterling

Brooklyn

 

 

 

 

Stonington

 

4

1

1

100.00%

Stratford

 

50

18

5

27.78%

Suffield

Enfield

1

0

0

0.00%

Thomaston

Torrington

 

 

 

 

Thompson

Brooklyn

 

 

 

 

Tolland

Mansfield

1

1

0

0.00%

Torrington

 

348

180

72

40.00%

Trumbull

 

123

56

20

35.71%

Union

Brooklyn

 

 

 

 

Vernon

Enfield

1

0

0

0.00%

Voluntown

 

 

 

 

 

Wallingford

 

20

11

6

54.55%

Warren

Torrington

 

 

 

 

Washington

 

 

 

 

 

Waterbury

 

23

20

8

40.00%

Waterford

Groton

 

 

 

 

Watertown

Torrington

 

 

 

 

West Hartford

Bloomfield

4

2

1

50.00%

West Haven

 

2

1

0

0.00%

Westbrook

 

1

0

0

0.00%

Weston

Westport

1

0

0

0.00%

Westport

 

92

79

27

34.18%

Wethersfield

 

11

3

1

33.33%

Willington

Mansfield

1

0

0

0.00%

Wilton

 

263

109

40

36.70%

Winchester

Torrington

 

 

 

 

Windham

Enfield

 

 

 

 

Windsor

 

8

4

1

25.00%

Windsor Locks

Enfield

 

 

 

 

Wolcott

Cheshire

 

 

 

 

Woodbridge

North Haven

13

12

6

50.00%

Woodbury

Southbury

 

 

 

 

Woodstock

Brooklyn

3

2

0

0.00%

 

 

 

 

 

 

 





Content Last Modified on 4/5/2010 9:17:08 AM