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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.