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Table 2 The frequency ratio of dogs positive for Anaplasma phagocytophilum based on real-time PCR analysis according to the tick infestation level in dogs from the municipalities of Itaguaí and Seropédica, Rio de Janeiro State, Brazil

From: Molecular epidemiology of the emerging zoonosis agent Anaplasma phagocytophilum (Foggie, 1949) in dogs and ixodid ticks in Brazil

Infestation level

Real-time PCR

Frequency ratio

Dogs sampled (n)

Positive (%)

FR

P

IC

Uninfested

192

4.17

-a

-

-

Low infestation

112

4.46

1.07

0.43

0.36-3.20

Moderate infestation

58

5.17

1.24

0.48

0.34-4.53

High infestation

28

10.71

2.57

0.15

0.72-9.12

Very high infestation

8

12.50

3.00

0.40

0.42-21.19

  1. aReference category, FR-Frequency ratio, P = p value, IC-Confidence Interval.