Skip to main content

Table 1 Canine vector-borne pathogen seroprevalence in Canada (2008–2015) for Borrelia burgdorferi, Ehrlichia and Anaplasma spp., and the antigen of Dirofilaria immitis (n = 753,468), and univariable associations between province and serostatus

From: Prevalence of Borrelia burgdorferi, Anaplasma spp., Ehrlichia spp. and Dirofilaria immitis in Canadian dogs, 2008 to 2015: a repeat cross-sectional study

Province

B. burgdorferi

Ehrlichia spp.

Anaplasma spp.

D. immitis

Ontario

No. positive/No. tested (%)

10,186/564,552 (1.8)

2009/564,552 (0.4)

1719/564,476 (0.3)

703/564,552 (0.1)

Odds ratio

Referent

Referent

Referent

Referent

Alberta

No. positive/No. tested (%)

54/6697 (0.8)

329/6697 (4.9)

98/6664 (1.5)

12/6,697 (0.2)

Odds ratio; P-value

0.4; P < 0.001

14.5; P < 0.001

4.9; P < 0.001

1.4; P = 0.2

British Columbia

No. positive/No. tested (%)

23/4815 (0.5)

316/4815 (6.6)

133/4802 (2.8)

7/4815 (0.2)

Odds ratio; P-value

0.3; P < 0.001

19.7; P < 0.001

9.3; P < 0.001

1.2; P = 0.6

Manitoba

No. positive/No. tested (%)

1718/72,254 (2.4)

211/72,254 (0.3)

695/72,158 (1.0)

250/72,254 (0.4)

Odds ratio; P-value

1.3; P < 0.001

0.8; P = 0.006

3.2; P < 0.001

2.8; P < 0.001

New Brunswick

No. positive/No. tested (%)

158/2129 (7.4)

17/2129 (0.8)

18/2129 (0.9)

3/2129 (0.1)

Odds ratio; P-value

4.4; P < 0.001

2.3; P = 0.001

2.8; P < 0.001

1.1; P = 0.8

Newfoundland

No. positive/No. tested (%)

6/236 (2.5)

3/236 (1.3)

1/236 (0.4)

1/236 (0.4)

Odds ratio; P-value

1.4; P = 0.4

3.6; P = 0.03

1.4; P = 0.7

3.4; P = 0.2

Nova Scotia

No. positive/No. tested (%)

592/6464 (9.2)

37/6464 (0.6)

85/6429 (1.3)

12/6464 (0.2)

Odds ratio; P-value

5.5; P < 0.001

1.6; P = 0.004

4.4; P < 0.001

1.5; P = 0.2

Prince Edward Island

No. positive/No. tested (%)

1/3 (33.3)

0/3 (0)

0/3 (0)

0/3 (0)

Odds ratio; P-value

np

np

np

np

Quebec

No. positive/No. tested (%)

2229/95,898 (2.3)

582/95,898 (0.6)

363/95,891 (0.4)

274/95,898 (0.3)

Odds ratio; P-value

1.3; P < 0.001

1.7; P < 0.001

1.2; P < 0.001

2.3; P < 0.001

Saskatchewan

No. positive/No. tested (%)

3/408 (0.7)

5/408 (1.2)

0/408 (0)

1/408 (0.3)

Odds ratio; P-value

0.4; P = 0.1

3.4; P = 0.006

np

2.0; P = 0.5

Yukon

No. positive/No. tested (%)

0/12 (0)

1/12 (8.3)

0/12 (0)

0/12 (0)

Odds ratio; P-value

np

np

np

np

All of Canada

No. positive/No. tested (%)

14,970/753,468 (2.0)

3510/753,468 (0.5)

3112/753,208 (0.4)

1263/753,468 (0.2)

  1. Notes: Reported values are test results not individual dogs. Odds ratio and associated P-value reported for logistic regression analysis between positive test result (outcome) and province (Prince Edward Island and Yukon excluded due to low cell counts); all four models had overall P < 0.0001
  2. Abbreviation: np not performed due to low cell counts