2005
Human Monocytotropic Ehrlichiosis
Dawson J, Ewing S, Davidson W, Childs J, Little S, Standaert S. Human Monocytotropic Ehrlichiosis. 2005, 239-257. DOI: 10.1128/9781555816490.ch14.Peer-Reviewed Original ResearchHuman monocytotropic ehrlichiosisMonocytotropic ehrlichiosisMild self-limiting symptomsSelf-limiting symptomsNonspecific febrile illnessSpectrum of manifestationsSeasonality of transmissionTick-borne zoonosisFebrile illnessAsymptomatic infectionClinical recognitionHigh riskRickettsial infectionEpidemiological studiesEtiologic agentFatal diseaseLaboratory diagnosisZoonotic diseaseEhrlichia chaffeensisLone star tickE. chaffeensisInfectionDiseaseEhrlichiosisUnited States
2003
Invasion and survival strategies of Anaplasma phagocytophilum
Carlyon JA, Fikrig E. Invasion and survival strategies of Anaplasma phagocytophilum. Cellular Microbiology 2003, 5: 743-754. PMID: 14531890, DOI: 10.1046/j.1462-5822.2003.00323.x.Peer-Reviewed Original ResearchConceptsAnaplasma phagocytophilumA. phagocytophilumHuman granulocytic ehrlichiosisHostile intracellular environmentTick-borne zoonosisObligate intracellular bacteriumHost neutrophilsNeutrophil adhesionInnate immunityPolymorphonuclear leucocytesAetiological agentGranulocytic ehrlichiosisIntracellular bacteriumNeutrophilsMicrobicidal activityPhagocytophilumHost cellsProteolytic compoundsAcidic lysosomesBacteria-containing phagosomesKey playersLeucocytesImmunityEhrlichiosisPhagocytesSuccessful Treatment of Human Granulocytic Ehrlichiosis in Children Using Rifampin
Krause PJ, Corrow CL, Bakken JS. Successful Treatment of Human Granulocytic Ehrlichiosis in Children Using Rifampin. 2003, 112: e252-e253. PMID: 12949322, DOI: 10.1542/peds.112.3.e252.Peer-Reviewed Original ResearchConceptsHuman granulocytic ehrlichiosisYears of ageSuccessful treatmentGranulocytic ehrlichiosisTick-borne infectious diseaseFlu-like illnessTreatment of choiceHospital admissionClinical featuresSerious infectionsInfectious diseasesPhagocytophilum infectionRifampinAnaplasma phagocytophilumPermanent stainingChildrenInfectionTreatmentEhrlichiosisAgeYearsAdmissionIllnessDiseaseDoxycycline
2002
Differential Expression of the p44 Gene Family in the Agent of Human Granulocytic Ehrlichiosis
IJdo JW, Wu C, Telford SR, Fikrig E. Differential Expression of the p44 Gene Family in the Agent of Human Granulocytic Ehrlichiosis. Infection And Immunity 2002, 70: 5295-5298. PMID: 12183586, PMCID: PMC128253, DOI: 10.1128/iai.70.9.5295-5298.2002.Peer-Reviewed Original ResearchConceptsP44 geneDifferential expressionHuman granulocytic ehrlichiosisGene familyAntigenic variationHGE bacteriaTransmission feedingGranulocytic ehrlichiosisGenesHypervariable regionInfected C3H miceP44 expressionTick transmissionExpressionSCID miceC3H miceHGE infectionMurine modelInfected ticksSalivary glandsNymphal ticksMiceTicksEhrlichiosisBacteriaSpatial Analysis of Human Granulocytic Ehrlichiosis near Lyme, Connecticut - Volume 8, Number 9—September 2002 - Emerging Infectious Diseases journal - CDC
Chaput EK, Meek JI, Heimer R. Spatial Analysis of Human Granulocytic Ehrlichiosis near Lyme, Connecticut - Volume 8, Number 9—September 2002 - Emerging Infectious Diseases journal - CDC. Emerging Infectious Diseases 2002, 8: 943-948. PMID: 12194771, PMCID: PMC2732548, DOI: 10.3201/eid0809.020103.Peer-Reviewed Original Research
2001
Infections with Ehrlichia chaffeensis and Ehrlichia ewingii in Persons Coinfected with Human Immunodeficiency Virus
Paddock C, Folk S, Shore G, Machado L, Huycke M, Slater L, Liddell A, Buller R, Storch G, Monson T, Rimland D, Sumner J, Singleton J, Bloch K, Tang Y, Standaert S, Childs J. Infections with Ehrlichia chaffeensis and Ehrlichia ewingii in Persons Coinfected with Human Immunodeficiency Virus. Clinical Infectious Diseases 2001, 33: 1586-1594. PMID: 11568857, DOI: 10.1086/323981.Peer-Reviewed Original ResearchConceptsHuman immunodeficiency virusImmunodeficiency virusE. ewingiiE. chaffeensisCases of ehrlichiosisDiagnosis of ehrlichiosisT-lymphocyte countsCells/microL.Ehrlichia ewingiiEhrlichia chaffeensisLife-threatening illnessLymphocyte countClinical courseHIV infectionMedical managementPatient cohortSevere manifestationsPatientsLaboratory evaluationEhrlichiosisChaffeensisInfectionEwingiiMultiple factorsVirusCoinfecting Deer-Associated Zoonoses: Lyme Disease, Babesiosis, and Ehrlichiosis
Goldstein E, Thompson C, Spielman A, Krause P. Coinfecting Deer-Associated Zoonoses: Lyme Disease, Babesiosis, and Ehrlichiosis. Clinical Infectious Diseases 2001, 33: 676-685. PMID: 11486290, DOI: 10.1086/322681.Peer-Reviewed Original ResearchConceptsLyme diseaseDuration of symptomsHuman granulocytic ehrlichiosisTickborne infectionClinical managementHealth burdenHuman coinfectionsDiagnostic proceduresGranulocytic ehrlichiosisDisease syndromeHuman babesiosisRodent reservoirsHuman hostInfectionDiseaseEhrlichiosisDiversity of pathogensBabesiosisPathogensCoinfectionSyndromeSymptomsIncidenceVector hostInfection of Mice with the Agent of Human Granulocytic Ehrlichiosis after Different Routes of Inoculation
Hodzic E, Feng S, Fish D, Leutenegger C, Freet K, Barthold S. Infection of Mice with the Agent of Human Granulocytic Ehrlichiosis after Different Routes of Inoculation. The Journal Of Infectious Diseases 2001, 183: 1781-1786. PMID: 11372031, DOI: 10.1086/320735.Peer-Reviewed Original ResearchConceptsBone marrow samplesReal-time polymerase chain reactionPolymerase chain reactionHuman granulocytic ehrlichiosisMarrow samplesDay 20Granulocytic ehrlichiosisInfection of miceRate of infectionKinetics of infectionLymph nodesGene targetsInfected miceC3H miceEarly disseminationVascular perfusionDay 10Experimental infectionInfectionMiceNeedle inoculationChain reactionBloodEhrlichiosisInoculationEvaluation of a polyvalent enzyme-linked immunosorbent assay incorporating a recombinant p44 antigen for diagnosis of granulocytic ehrlichiosis in dogs and horses.
Magnarelli LA, Ijdo JW, Van Andel AE, Wu C, Fikrig E. Evaluation of a polyvalent enzyme-linked immunosorbent assay incorporating a recombinant p44 antigen for diagnosis of granulocytic ehrlichiosis in dogs and horses. American Journal Of Veterinary Research 2001, 62: 29-32. PMID: 11197555, DOI: 10.2460/ajvr.2001.62.29.Peer-Reviewed Original ResearchConceptsEquine samplesPolyvalent ELISAPolyvalent enzyme-linked immunosorbentGranulocytic ehrlichiosisIFA stainingEquine serum samplesE risticiiEhrlichia canisCanine serum samplesCanine samplesSpecific recombinant antigensE equiHorsesEhrlichiosisPercentage of samplesIndirect fluorescent antibody stainingRecombinant antigensDogsWhole cell antigenCanisEquiELISA resultsSerum samplesPresent studyFluorescent antibody staining
2000
Granulocytic Ehrlichiosis in Mice Deficient in Phagocyte Oxidase or Inducible Nitric Oxide Synthase
Banerjee R, Anguita J, Fikrig E. Granulocytic Ehrlichiosis in Mice Deficient in Phagocyte Oxidase or Inducible Nitric Oxide Synthase. Infection And Immunity 2000, 68: 4361-4362. PMID: 10858261, PMCID: PMC101771, DOI: 10.1128/iai.68.7.4361-4362.2000.Peer-Reviewed Original ResearchThe Emergence of Another Tickborne Infection in the 12-Town Area around Lyme, Connecticut: Human Granulocytic Ehrlichiosis
IJdo J, Meek J, Cartter M, Magnarelli L, Wu C, Tenuta S, Fikrig E, Ryder R. The Emergence of Another Tickborne Infection in the 12-Town Area around Lyme, Connecticut: Human Granulocytic Ehrlichiosis. The Journal Of Infectious Diseases 2000, 181: 1388-1393. PMID: 10751139, DOI: 10.1086/315389.Peer-Reviewed Original ResearchConceptsHuman granulocytic ehrlichiosisTickborne infectionProspective population-based surveillanceGranulocytic ehrlichiosisCommon tickborne infectionPopulation-based surveillancePrimary care providersSubset of seraIndirect fluorescent antibody methodIllness suggestiveCare providersLaboratory evidenceImportant causeProbable casesFluorescent antibody methodImmunoblot assayLyme diseaseInfectionAntibody methodIncidenceEhrlichiosisLymeMorbidityDiseaseSuggestiveAcquisition of Coinfection and Simultaneous Transmission of Borrelia burgdorferi and Ehrlichia phagocytophila by Ixodes scapularis Ticks
Levin M, Fish D. Acquisition of Coinfection and Simultaneous Transmission of Borrelia burgdorferi and Ehrlichia phagocytophila by Ixodes scapularis Ticks. Infection And Immunity 2000, 68: 2183-2186. PMID: 10722618, PMCID: PMC97402, DOI: 10.1128/iai.68.4.2183-2186.2000.Peer-Reviewed Original ResearchConceptsHuman granulocytic ehrlichiosisPrior infection statusGranulocytic ehrlichiosisInfected miceLyme diseaseInfection statusI. scapularis nymphsScapularis ticksSecond pathogenSusceptible hostsScapularis nymphsInfected hostIxodes scapularis ticksPrevious infectionI. scapularis ticksEhrlichia phagocytophilaUninfected ticksInfected ticksMiceBorrelia burgdorferiDiseaseEhrlichiosisBorreliaEvidence of interactionNymphal ticks
1999
The Human Ehrlichioses in the United States - Volume 5, Number 5—October 1999 - Emerging Infectious Diseases journal - CDC
McQuiston J, Paddock C, Holman R, Childs J. The Human Ehrlichioses in the United States - Volume 5, Number 5—October 1999 - Emerging Infectious Diseases journal - CDC. Emerging Infectious Diseases 1999, 5: 635-642. PMID: 10511519, PMCID: PMC2627718, DOI: 10.3201/eid0505.990504.Peer-Reviewed Original ResearchConceptsHuman granulocytic ehrlichiosisHuman monocytic ehrlichiosisInfectious Diseases journal - CDCState health departmentsPublic health importanceSerologic testingNational surveillanceHealth departmentsHuman ehrlichiosesHealth importanceDisease controlGranulocytic ehrlichiosisMonocytic ehrlichiosisEhrlichiosisUpper midwestern statesAnnual numberBetter assessmentCasesPreventionDisparity in the Natural Cycles of Borrelia burgdorferi and the Agent of Human Granulocytic Ehrlichiosis - Volume 5, Number 2—April 1999 - Emerging Infectious Diseases journal - CDC
Levin M, Vignes F, Fish D. Disparity in the Natural Cycles of Borrelia burgdorferi and the Agent of Human Granulocytic Ehrlichiosis - Volume 5, Number 2—April 1999 - Emerging Infectious Diseases journal - CDC. Emerging Infectious Diseases 1999, 5: 204-208. PMID: 10221871, PMCID: PMC2640706, DOI: 10.3201/eid0502.990203.Peer-Reviewed Original ResearchConceptsHuman granulocytic ehrlichiosisAgent of HGEB. burgdorferi infectionBurgdorferi infectionInfectious Diseases journal - CDCBorrelia burgdorferiWhite-footed miceIxodes scapularis ticksWild white-footed miceDifferent prevalenceGranulocytic ehrlichiosisPrevalenceMiceScapularis ticksInfectionHost-seeking ticksNatural cycleBurgdorferiTicksAgentsEhrlichiosisComparative Vector Competence of Dermacentor variabilis and Ixodes scapularis (Acari: Ixodidae) for the Agent of Human Granulocytic Ehrlichiosis
Vignes F, Levin M, Fish D. Comparative Vector Competence of Dermacentor variabilis and Ixodes scapularis (Acari: Ixodidae) for the Agent of Human Granulocytic Ehrlichiosis. Journal Of Medical Entomology 1999, 36: 182-185. PMID: 10083755, DOI: 10.1093/jmedent/36.2.182.Peer-Reviewed Original ResearchConceptsAgent of HGEHuman granulocytic ehrlichiosisPolymerase chain reactionD. variabilis nymphsGranulocytic ehrlichiosisI. scapularis nymphsEvidence of transmissionVector competenceScapularis nymphsI. scapularisLeucopus miceD. variabilis larvaeMiceDermacentor variabilisComparative vector competenceRepletionChain reactionCompetent vectorsD. variabilisWhite-footed miceTrialsEhrlichiosisAgentsIxodes scapularisIxodes scapularis SayDiagnosis of Human Ehrlichiosis by PCR Assay of Acute-Phase Serum
Comer J, Nicholson W, Sumner J, Olson J, Childs J. Diagnosis of Human Ehrlichiosis by PCR Assay of Acute-Phase Serum. Journal Of Clinical Microbiology 1999, 37: 31-34. PMID: 9854059, PMCID: PMC84159, DOI: 10.1128/jcm.37.1.31-34.1999.Peer-Reviewed Original ResearchConceptsDetermination of etiologyAcute-phase seraHuman granulocytic ehrlichiosisSerologic testingHuman ehrlichiosisAcute-phase serum samplesEarly detectionWhole blood specimensPCR assaysBlood specimensPCR testingEtiologic agentGranulocytic ehrlichiosisEtiologyHGE agentSimilar titersSerum samplesExposure historyTitersEhrlichia chaffeensisEhrlichiosisFourfold differenceE. chaffeensisSerumAntibodiesIdentity of Ehrlichial DNA Sequences Derived from Ixodes ricinus Ticks with Those Obtained from Patients with Human Granulocytic Ehrlichiosis in Slovenia
Petrovec M, Sumner J, Nicholson W, Childs J, Strle F, Barlič J, Lotrič-Furlan S, AvšičŽupanc T. Identity of Ehrlichial DNA Sequences Derived from Ixodes ricinus Ticks with Those Obtained from Patients with Human Granulocytic Ehrlichiosis in Slovenia. Journal Of Clinical Microbiology 1999, 37: 209-210. PMID: 9854093, PMCID: PMC84210, DOI: 10.1128/jcm.37.1.209-210.1999.Peer-Reviewed Original Research
1998
Acquisition and Transmission of the Agent of Human Granulocytic Ehrlichiosis by Ixodes scapularis Ticks
Hodzic E, Fish D, Maretzki C, De Silva A, Feng S, Barthold S. Acquisition and Transmission of the Agent of Human Granulocytic Ehrlichiosis by Ixodes scapularis Ticks. Journal Of Clinical Microbiology 1998, 36: 3574-3578. PMID: 9817875, PMCID: PMC105242, DOI: 10.1128/jcm.36.12.3574-3578.1998.Peer-Reviewed Original ResearchConceptsInfected miceHuman granulocytic ehrlichiosisHGE agentIxodes scapularis ticksGranulocytic ehrlichiosisUninfected larval ticksAcquisition of infectionScapularis ticksMedian infectious doseLarval ticksNymphal ticksTick-borne transmissionC3H miceImmunodeficient miceInfectious doseMiceHuman isolatesInfectionOnset of feedingBloodEhrlichiosisPresent studyMammalian hostsCompetitive PCRTicksHuman Granulocytic Ehrlichiosis in Europe: Clinical and Laboratory Findings for Four Patients from Slovenia
Lotrič-Furlan S, Petrovec M, Zupanc T, Nicholson W, Sumner J, Childs J, Strle F. Human Granulocytic Ehrlichiosis in Europe: Clinical and Laboratory Findings for Four Patients from Slovenia. Clinical Infectious Diseases 1998, 27: 424-428. PMID: 9770134, DOI: 10.1086/514683.Peer-Reviewed Original ResearchConceptsHuman granulocytic ehrlichiosisHGE agentFebrile illnessLaboratory findingsTick biteAcute human granulocytic ehrlichiosisGranulocytic ehrlichiosisTick-borne diseaseAcute infectionAntibiotic therapyDisease coursePolymerase chain reaction analysisClinical featuresDetectable antibodiesDifferential diagnosisFirst visitChain reaction analysisPatientsHigh titersIllnessEhrlichial organismsEhrlichiosisAntibodiesBiteUnited StatesHuman granulocytic ehrlichiosis, a tick-borne disease.
Ijdo JW, Fikrig E. Human granulocytic ehrlichiosis, a tick-borne disease. Nederlands Tijdschrift Voor Geneeskunde 1998, 142: 1778-81. PMID: 9856144.Peer-Reviewed Original ResearchConceptsPresence of leukopeniaRecent tick biteDay of admissionWhite cell countPeripheral blood smearHuman granulocytic ehrlichiosisElevated transaminasesTick-borne diseaseSevere headachePlatelet countTick biteNormal limitsCell countBlood smearsGranulocytic ehrlichiosisDays durationFull recoveryMyalgiaEhrlichiosisHeadacheWeeksLaboratory resultsLaboratory testsDurationCount
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