AnaplasmosisAnaplasma phagocytophilumEhrlichiosisAnaplasmaAnaplasma marginaleTick-Borne DiseasesArthropod VectorsIxodesMaineArachnid VectorsCattle DiseasesTrypanosomiasis, BovineTicksDermacentorBabesiosisEhrlichiaTick InfestationsHorse DiseasesEhrlichia chaffeensisSerologic TestsLyme DiseaseBacterial Outer Membrane ProteinsHL-60 CellsSeroepidemiologic StudiesBabesiaDog DiseasesCattleAntibodies, BacterialSalivary GlandsComplement Fixation TestsDNA, BacterialBorrelia burgdorferiHorsesPolymerase Chain Reaction