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Table 3 Ehrlichia spp. antibody percent positive test results (number positive/number tested) by region and state from dogs tested in the US from 2001 to 2007 [1], 2010 to 2012 [2], and 2013 to 2019

From: Canine infection with Dirofilaria immitis, Borrelia burgdorferi, Anaplasma spp., and Ehrlichia spp. in the United States, 2013–2019

State

2001–2007 [1]

2010–2012 [2]

2013–2019

Northeast

 Connecticut

0.2% (21/10,209)

0.8% (1434/183,776)

1.5% (13,159/870,092)

 Delaware

1.0% (48/4595)

2.3% (1,114/49,131)

4.9% (9075/186,675)

 District of Columbia

NR

1.6% (113/7029)

3.8% (2679/69,650)

 Maine

0.1% (39/28,230)

0.6% (1214/221,555)

1.4% (8909/635,005)

 Maryland

0.7% (165/22,945)

1.9% (5107/273,382)

4.6% (52,771/1,157,266)

 Massachusetts

0.3% (107/33,915)

0.8% (3315/406,476)

1.8% (30,583/1,679,373)

 New Hampshire

0.2% (36/18,122)

0.7% (949/129,829)

1.7% (9499/556,670)

 New Jersey

0.4% (89/20,575)

1.2% (3638/295,047)

3.1% (32,278/1,046,276)

 New York

0.2% (179/81,305)

0.6% (3176/536,968)

1.4% (32,835/2,304,678)

 Pennsylvania

0.2% (80/40,948)

0.6% (3364/579,608)

1.1% (24,835/2,211,622)

 Rhode Island

0.1% (6/6508)

0.3% (206/63,796)

1.4% (1958/144,718)

 Vermont

0.2% (7/3718)

0.6% (381/59,515)

1.6% (3420/215,341)

 Region

0.3% (777/271,070)

0.9% (24,011/2,806,112)

2.0% (222,001/11,077,366)

Midwest

 Illinois

0.4% (135/31,976)

0.8% (2155/277,174)

1.8% (28,173/1,554,356)

 Indiana

0.3% (54/20,515)

1.3% (1480/112,477)

1.8% (13,048/721,278)

 Iowa

0.4% (61/17,390)

0.7% (751/111,518)

1.4% (6435/472,492)

 Kansas

2.2% (119/5,473)

2.3% (1228/52,429)

4.6% (9982/217,197)

 Michigan

0.1% (34/67,625)

0.3% (781/236,798)

0.6% (10,126/1,569,688)

 Minnesota

0.3% (202/76,610)

0.6% (1426/234,558)

1.2% (11,517/955,740)

 Missouri

1.9% (462/24,095)

5.4% (5888/108,573)

10.4% (49,485/477,734)

 Nebraska

0.3% (13/4282)

1.6% (70/4485)

1.8% (956/51,900)

 North Dakota

0.0% (1/4558)

0.3% (55/16,560)

0.6% (496/88,388)

 Ohio

0.1% (79/61,138)

0.6% (1727/278,437)

1.1% (16,838/1,513,496)

 South Dakota

0 (0/358)

0.6% (25/4497)

0.5% (286/53,477)

 Wisconsin

0.3% (194/59,070)

0.6% (1751/282,662)

1.2% (13,900/1,162,273)

 Region

0.4% (1354/373,090)

1.0% (17,337/1,720,168)

1.8% (161,242/8,838,019)

Southeast

 Alabama

0.3% (64/18,998)

1.6% (856/53,339)

3.5% (10,024/284,181)

 Arkansas

3.9% (324/8391)

9.4% (4029/42,774)

18.4% (29,341/159,161)

 Florida

0.8% (425/54,982)

1.2% (4644/403,622)

1.8% (28,518/1,588,286)

 Georgia

1.9% (444/23,333)

2.6% (3290/124,637)

3.7% (26,377/707,157)

 Kentucky

0.8% (152/18,935)

4.3% (2420/56,027)

6.9% (23,837/346,952)

 Louisiana

0.2% (18/11,197)

1.1% (140/12,406)

1.9% (2264/120,602)

 Mississippi

3.1% (68/2198)

4.6% (308/6637)

7.0% (4841/68,995)

 North Carolina

2.1% (431/20,783)

4.6% (11,431/249,132)

6.4% (115,377/1,797,218)

 Oklahoma

3.8% (439/11,549)

5.4% (3,847/70,751)

8.3% (24,845/301,051)

 South Carolina

0.8% (95/11,562)

1.4% (1151/82,677)

2.6% (11,655/453,006)

 Tennessee

2.3% (428/18,891)

3.0% (3307/111,312)

8.1% (37,150/456,799)

 Texas

0.8% (441/58,088)

1.8% (7659/432,799)

2.2% (38,424/1,778,110)

 Virginia

1.8% (532/28,787)

6.2% (21,770/350,437)

9.4% (176,931/1,886,580)

 West Virginia

0.1% (4/2942)

0.6% (339/61,434)

1.2% (3091/249,842)

Region

1.3% (3865/290,636)

3.2% (65,191/2.057,984)

5.2% (532,675/10,197,940)

West

 Alaska

NR

NR

3.8% (17/444)

 Arizona

3.2% (32/992)

2.4% (1349/55,865)

2.8% (9628/34,5481)

 California

0.8% (225/29,454)

0.8% (2258/270,190)

1.1% (14,600/1,280,960)

 Colorado

0.2% (19/11,557)

1.1% (217/19,467)

2.2% (3842/175,609)

 Hawaii

NR

7.0% (166/2359)

2.7% (1368/51,378)

 Idaho

0 (0/369)

0.6% (1/167)

1.0% (167/15,917)

 Montana

NR

0 (0/36)

1.5% (86/5842)

 Nevada

NR

0.5% (59/12,278)

0.9% (284/31,574)

 New Mexico

1.0% (21/2060)

3.2% (858/26,706)

3.3% (2393/72,549)

 Oregon

0.1% (2/2798)

0.6% (111/17,879)

0.9% (1043/115,016)

 Utah

0 (0/93)

0.5% (4/783)

1.0% (79/8231)

 Washington

0 (0/33)

2.5% (109/4330)

1.2% (734/60,702)

 Wyoming

0 (0/184)

0.6% (2/359)

2.7% (136/4968)

 Region

0.6% (299/47,540)

1.3% (5134/410,419)

1.6% (34,377/2,168,671)

Overall

0.6% (6295/982,336)

1.6% (111,673/6,994,683)

2.9% (950,295/32,281,996)