Ehrlichia chaffeensisEhrlichiaEhrlichiosisEhrlichia canisTicksEhrlichia ruminantiumAnaplasmaDog DiseasesTick-Borne DiseasesRickettsieaeAnaplasma phagocytophilumAntibodies, BacterialAnaplasmataceae InfectionsDogsDeerAnaplasmosisUridine KinaseRickettsiaceae InfectionsPolymerase Chain ReactionRickettsiaceaeArachnid VectorsAntigens, BacterialSalicylanilidesRNA, Ribosomal, 16SRickettsia rickettsiiBacterial Outer Membrane ProteinsFluorescent Antibody Technique, IndirectBacterial ProteinsSerologic TestsDisease ReservoirsDNA, BacterialMolecular Sequence DataDoxycycline