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Table 5 Percent positive test results (canine seroprevalence) for states with increasing trend (P < 0.0001) in antibodies to Anaplasma phagocytophilum

From: Trends in canine seroprevalence to Borrelia burgdorferi and Anaplasma spp. in the eastern USA, 2010–2017

State (n)a

Percent positive tests

Change (%)

Gamma (95% CI)b

2010

2017

Northeast

 Massachusetts (n = 1,464,062)

9.1

14.3

57.1

0.0759 (0.0726–0.0792)

 Maine (n = 660,847)

8.5

13.2

55.3

0.1111 (0.1056–0.1167)

 New Hampshire (n = 485,522)

7.3

13.7

87.7

0.1614 (0.1550–0.1678)

 Pennsylvania (n = 1,911,290)

2.6

4.4

69.2

0.1377 (0.1320–0.1435)

 Vermont (n = 197,082)

4.1

9.6

134.2

0.2601 (0.2474–0.2729)

  1. aTotal number of test results
  2. bGamma calculated for annual results for each state from 2010 through 2017, inclusive