RickettsiaRickettsia InfectionsRickettsia prowazekiiRickettsia rickettsiiRickettsia felisTyphus, Epidemic Louse-BorneRocky Mountain Spotted FeverBoutonneuse FeverOrientia tsutsugamushiTyphus, Endemic Flea-BorneTicksSiphonapteraDermacentorIxodidaeTick-Borne DiseasesCoxiellaRickettsiaceaeRickettsieaeRickettsiaceae InfectionsArachnid VectorsRickettsial VaccinesRhipicephalus sanguineusRickettsia akariArthropod VectorsDelayed DiagnosisPhthirapteraDNA, BacterialAntibodies, BacterialPolymerase Chain ReactionIxodesPrenatal DiagnosisEarly DiagnosisSensitivity and SpecificityCitrate (si)-SynthasePhylogenyAntigens, BacterialSequence Analysis, DNABacterial Outer Membrane ProteinsMolecular Sequence DataDiagnosisBartonellaVero CellsNymphDog DiseasesTick InfestationsRNA, Ribosomal, 16SBacterial ProteinsTrombiculidaeEhrlichiaCtenocephalidesRetrospective StudiesGenes, BacterialL Cells (Cell Line)Species SpecificityQ FeverCoxiella burnetiiPediculusEctoparasitic InfestationsDiagnostic ErrorsGenome, BacterialEhrlichiosisHemipteraSeroepidemiologic StudiesBacteriological Techniques