D. Walker

D. Walker, Xue-Jie Yu, Lihong Zhang, 2009, Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases.

Ehrlichial infection in Cameroonian canines by Ehrlichia canis and Ehrlichia ewingii.

E. Fokam, D. Walker, L. Ndip, 2005, Veterinary microbiology.

Ehrlichia species in Rhipicephalus sanguineus ticks in Cameroon.

D. Walker, L. Ndip, R. Ndip, 2007, Vector borne and zoonotic diseases.

Enzyme-Linked Immunosorbent Assay with Conserved Immunoreactive Glycoproteins gp36 and gp19 Has Enhanced Sensitivity and Provides Species-Specific Immunodiagnosis of Ehrlichia canis Infection

Xiaofeng Zhang, R. Corstvet, D. Walker, 2006, Clinical and Vaccine Immunology.

Short report: geographic distribution of different genetic types of Ehrlichia chaffeensis.

J. Olson, J. Piesman, D. Walker, 1997, The American journal of tropical medicine and hygiene.

Immunodiagnosis of Ehrlichia canis Infection with Recombinant Proteins

E. Breitschwerdt, R. Corstvet, D. Walker, 2001, Journal of Clinical Microbiology.

Kinetics of Antibody Response to Ehrlichia canis Immunoreactive Proteins

R. Corstvet, D. Walker, J. McBride, 2003, Infection and Immunity.

Novel Immunoreactive Glycoprotein Orthologs of Ehrlichia spp.

D. Walker, J. Comer, J. McBride, 2003, Annals of the New York Academy of Sciences.

Detection of medically important Ehrlichia by quantitative multicolor TaqMan real-time polymerase chain reaction of the dsb gene.

Yi-Wei Tang, E. Breitschwerdt, M. Labruna, 2005, The Journal of molecular diagnostics : JMD.

Fever with thrombocytopenia associated with a novel bunyavirus in China.

Weizhong Yang, Qun Li, X. Guan, 2011, The New England journal of medicine.

Diagnosing emerging and reemerging infectious diseases: the pivotal role of the pathologist.

D. Walker, J. Olano, D. Walker, 2011, Archives of pathology & laboratory medicine.

Diagnosing Emerging and Reemerging Infectious Diseases

D. Walker, J. Olano, 2010 .

Analysis of Health-Care Charges in Murine Typhus: Need for Improved Clinical Recognition and Diagnostics for Acute Disease.

D. Walker, L. Blanton, Rahat F. Vohra, 2018, The American journal of tropical medicine and hygiene.

Current status of immune mechanisms of killing of intracellular microorganisms.

N. Ismail, D. Walker, J. Olano, 2002, FEMS microbiology letters.

Nucleocapsid mutations in SARS-CoV-2 augment replication and pathogenesis

Vineet D. Menachery, S. Weaver, Xuping Xie, 2022, PLoS pathogens.

The guinea pig model for tick-borne spotted fever rickettsioses: A second look.

D. Walker, J. Stokes, A. Varela-Stokes, 2020, Ticks and tick-borne diseases.

Antigenic protein modifications in Ehrlichia

S. Thomas, D. Walker, N. Thirumalapura, 2009, Parasite immunology.

Activation of ASC Inflammasome Driven by Toll-Like Receptor 4 Contributes to Host Immunity against Rickettsial Infection

D. Walker, J. McBride, R. Fang, 2020, Infection and Immunity.

Early lymphoreticular viral tropism and antigen persistence. Tamiami virus infection in the cotton rat.

F. Murphy, D. Walker, S. Whitfield, 1976, Laboratory investigation; a journal of technical methods and pathology.

Reply to Fournier and Raoult

D. Walker, Rita Sousa, 2009 .

Cytokine-induced, nitric oxide-dependent, intracellular antirickettsial activity of mouse endothelial cells.

V. Popov, C. Welsh, D. Walker, 1997, Laboratory investigation; a journal of technical methods and pathology.

Value of Autopsy Emphasized in the Case Report of a Single Patient with Middle East Respiratory Syndrome

D. Walker, 2015, The American Journal of Pathology.

The pathogenesis of SFTSV infection in IFN g / く knockout mice : 1 insights into the pathologic mechanisms of a new viral hemorrhagic 2 fever

R. Tesh, Yan Liu, S. Paessler, 2013 .

Case-fatality ratio and effectiveness of ribavirin therapy among hospitalized patients in china who had severe fever with thrombocytopenia syndrome.

W. Liu, W. Cao, Zhen-Dong Yang, 2013, Clinical infectious diseases : an official publication of the Infectious Diseases Society of America.

The Pathogenesis of Severe Fever with Thrombocytopenia Syndrome Virus Infection in Alpha/Beta Interferon Knockout Mice: Insights into the Pathologic Mechanisms of a New Viral Hemorrhagic Fever

R. Tesh, S. Paessler, D. Walker, 2013, Journal of Virology.

Person-to-person transmission of severe fever with thrombocytopenia syndrome virus.

Qun Li, Wanfu Hu, L. Mei, 2012, Vector borne and zoonotic diseases.

CD8+ T cells provide immune protection against murine disseminated endotheliotropic Orientia tsutsugamushi infection

Yuejin Liang, L. Soong, D. Walker, 2017, PLoS neglected tropical diseases.

A single mutation (V64G) within the RING Domain of Z attenuates Junin virus

S. Hallam, J. C. de la Torre, Junki Maruyama, 2020, PLoS neglected tropical diseases.

Rickettsiae-stimulated dendritic cells mediate protection against lethal rickettsial challenge in an animal model of spotted fever rickettsiosis.

J. Jordan, L. Soong, D. Walker, 2007, The Journal of infectious diseases.

Protective Heterologous Immunity against Fatal Ehrlichiosis and Lack of Protection following Homologous Challenge

N. Ismail, D. Walker, H. Stevenson, 2008, Infection and Immunity.

Pathogenesis of Lassa Fever

D. Walker, Nadezhda E. Yun, D. Walker, 2012, Viruses.

Rocky Mountain spotted fever--changing ecology and persisting virulence.

J. Dumler, D. Walker, 2005, The New England journal of medicine.

Complete Genome Sequence of Rickettsia typhi and Comparison with Sequences of Other Rickettsiae

Guangwei Fan, George E. Fox, Richard A. Gibbs, 2004, Journal of bacteriology.

Rickettsia and Orientia

D. Walker, D. Bouyer, D. Walker, 2019, Manual of Clinical Microbiology.

Rickettsia typhi (Murine Typhus)

J. Dumler, D. Walker, L. Blanton, 2014 .

9 Rickettsia and Rickettsial Diseases

D. Walker, Xue-Jie Yu, 2012 .

Rickettsiae and rickettsial infections: the current state of knowledge.

D. Walker, D. Walker, 2007, Clinical infectious diseases : an official publication of the Infectious Diseases Society of America.

rOmpA is a critical protein for the adhesion of Rickettsia rickettsii to host cells.

Han Li, D. Walker, H. Li, 1998, Microbial pathogenesis.

Immunohistochemical diagnosis of typhus rickettsioses using an anti-lipopolysaccharide monoclonal antibody.

S. Zaki, D. Walker, D. Wear, 1997, Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc.

Histopathology and immunohistologic demonstration of the distribution of Rickettsia typhi in fatal murine typhus.

J. Taylor, T. Betz, D. Walker, 1989, American journal of clinical pathology.

Directed Mutagenesis of the Rickettsia prowazekii pld Gene Encoding Phospholipase D

Aimee M. Tucker, Lonnie O. Driskell, D. Wood, 2009, Infection and Immunity.

Rickettsia rickettsii and Other Spotted Fever Group Rickettsiae (Rocky Mountain Spotted Fever and Other Spotted Fevers)

D. Walker, L. Blanton, D. Walker, 2014 .

Rickettsia hoogstraalii sp. nov., isolated from hard- and soft-bodied ticks.

V. Popov, T. Avšič-Županc, T. Kurtti, 2010, International journal of systematic and evolutionary microbiology.

Scrub Typhus in Previously Unrecognized Areas of Endemicity in China

Qun Li, W. Yin, R. Hai, 2010, Journal of Clinical Microbiology.

A biosafety level-2 dose-dependent lethal mouse model of spotted fever rickettsiosis: Rickettsia parkeri Atlantic Rainforest strain

D. Walker, Andrés F Londoño, Nicole L. Mendell, 2019, PLoS neglected tropical diseases.

Experimental infection of rhesus monkeys with Lassa virus and a closely related arenavirus, Mozambique virus.

J. McCormick, K. Johnson, J. Gardner, 1982, The Journal of infectious diseases.

Mycoplasmal, Chlamydial, Rickettsial, and Ehrlichial Pneumonias

D. Walker, D. Walker, 2008 .

Identification of CD8 T-Lymphocyte Epitopes in OmpB of Rickettsia conorii

C. Diaz-Montero, G. Valbuena, D. Walker, 2003, Infection and Immunity.

Dual spike and nucleocapsid mRNA vaccination confer protection against SARS-CoV-2 Omicron and Delta variants in preclinical models

D. Weissman, S. Weaver, P. Shi, 2022, Science Translational Medicine.

Synthesis of Nitric Oxide

D. Walker, H. Feng, D. Walker, 2007 .

Rickettsia australis Activates Inflammasome in Human and Murine Macrophages

N. Ismail, Sasha R. Azar, D. Walker, 2016, PloS one.

Invasive pulmonary aspergillosis associated with influenza.

J. Fischer, D. Walker, D. Walker, 1979, JAMA.

The role of CD8 T lymphocytes in rickettsial infections

J. Dumler, D. Walker, David H. Walker, 2015, Seminars in Immunopathology.

Intralesional expression of mRNA of interferon- gamma , tumor necrosis factor- alpha , interleukin-10, nitric oxide synthase, indoleamine-2,3-dioxygenase, and RANTES is a major immune effector in Mediterranean spotted fever rickettsiosis.

J. Torgal, R. Coelho, N. Ismail, 2007, The Journal of infectious diseases.

Pathogenesis of Rickettsial Diseases: Pathogenic and Immune Mechanisms of an Endotheliotropic Infection.

A. Sahni, D. Walker, S. Sahni, 2019, Annual review of pathology.

Humoral immune response to Rocky Mountain spotted fever in experimentally infected guinea pigs: immunoprecipitation of lactoperoxidase 125I-labeled proteins and detection of soluble antigens of Rickettsia rickettsii

J. Williams, M. Peacock, D. Walker, 1986, Infection and immunity.

Rocky Mountain spotted fever vaccine in an animal model

B. Hegarty, J. Folds, D. Walker, 1983, Journal of clinical microbiology.

Rickettsia rickettsii and Other Members of the Spotted Fever Group as Potential Bioweapons

D. Walker, D. Bouyer, 2006 .

Rickettsial infection of the pulmonary microcirculation: the basis for interstitial pneumonitis in Rocky Mountain spotted fever.

D. Walker, C. G. Crawford, B. Cain, 1980, Human pathology.

Relapse of Legionnaires' disease in a renal transplant recipient.

D. Walker, T. J. Lee, K. L. Sanders, 1980, Archives of internal medicine.

Commentary Death at Sverdlovsk: What Have We Learned?

D. Walker, O. Yampolska, Lev M. Grinbergt, 2007 .

Production and characterization of monoclonal antibodies to Rickettsia rickettsii

D. Walker, J. V. Lange, D. Walker, 1984, Infection and immunity.

Ehrlichiosis and anaplasmosis subcommittee report to the Tick-borne Disease Working Group.

B. Pritt, J. Dumler, D. Sexton, 2021, Ticks and tick-borne diseases.

Rickettsiae stimulate dendritic cells through toll-like receptor 4, leading to enhanced NK cell activation in vivo.

J. Jordan, L. Soong, D. Walker, 2009, The Journal of infectious diseases.

BIOTHREATS AND EMERGING INFECTIOUS DISEASES

D. Walker, 2017 .

Agents of Emerging Infectious Diseases

D. Walker, J. Olano, 2009, Vaccines for Biodefense and Emerging and Neglected Diseases.

An Intradermal Inoculation Mouse Model for Immunological Investigations of Acute Scrub Typhus and Persistent Infection

L. Soong, G. Valbuena, D. Walker, 2016, PLoS neglected tropical diseases.

Dual infection with Ehrlichia chaffeensis and a spotted fever group rickettsia: a case report.

T. Gandhi, D. Sexton, E. Breitschwerdt, 1998, Emerging infectious diseases.

Foxp 3 T-Regulatory Cells Produce both Gamma Interferon and Interleukin-10 during Acute Severe Murine Spotted Fever Rickettsiosis †

N. Ismail, D. Walker, R. Fang, 2009 .

The Rickettsiaceae, Anaplasmataceae, and Coxiellaceae

D. Walker, L. Blanton, D. Walker, 2016 .

Role of Tumor Necrosis Factor Alpha (TNF-α) and Interleukin-10 in the Pathogenesis of Severe Murine Monocytotropic Ehrlichiosis: Increased Resistance of TNF Receptor p55- and p75-Deficient Mice to Fatal Ehrlichial Infection

N. Ismail, D. Walker, H. Stevenson, 2006, Infection and Immunity.

Systemic Treatment with CpG-B after Sublethal Rickettsial Infection Induces Mouse Death through Indoleamine 2,3-Dioxygenase (IDO)

L. Xin, L. Soong, D. Walker, 2012, PloS one.

Mycoplasmal, Chlamydial, and Rickettsial Pneumonias

D. Walker, 1994 .

Rickettsial Diseases: From Epidemiology to Molecular Biology, The Pathway Toward Disease Control

D. Walker, 1992 .

Mice Lacking Functional STAT1 Are Highly Susceptible to Lethal Infection with Lassa Virus

N. Wauquier, J. C. de la Torre, V. Popov, 2013, Journal of Virology.

Disseminated infection by Aspergillus terreus.

M. Cohen, M. Mcginnis, D. Walker, 1983, American journal of clinical pathology.

The 2009 H1N1 Pandemic Adds to Our Knowledge of Influenza Pathogenesis

D. Walker, 2010, The American Journal of Pathology.

Identification of Rickettsia conorii infection by polymerase chain reaction in a soldier returning from Somalia.

G. Dasch, C. Oster, D. Walker, 1994, Clinical infectious diseases : an official publication of the Infectious Diseases Society of America.

Differential Interaction of Dendritic Cells with Rickettsia conorii: Impact on Host Susceptibility to Murine Spotted Fever Rickettsiosis

V. Popov, L. Soong, N. Ismail, 2007, Infection and Immunity.

Overproduction of TNF-α by CD8+ Type 1 Cells and Down-Regulation of IFN-γ Production by CD4+ Th1 Cells Contribute to Toxic Shock-Like Syndrome in an Animal Model of Fatal Monocytotropic Ehrlichiosis1

L. Soong, N. Ismail, G. Valbuena, 2004, The Journal of Immunology.

Relative Importance of T-Cell Subsets in Monocytotropic Ehrlichiosis: a Novel Effector Mechanism Involved in Ehrlichia-Induced Immunopathology in Murine Ehrlichiosis

N. Ismail, D. Walker, H. Stevenson, 2007, Infection and Immunity.

Immune Mediators of protective and pathogenic immune responses in patients with mild and fatal human monocytotropic ehrlichiosis

Yi-Wei Tang, N. Ismail, D. Walker, 2012, BMC Immunology.

Effect of blocking the CXCL9/10-CXCR3 chemokine system in the outcome of endothelial-target rickettsial infections.

G. Valbuena, D. Walker, D. Walker, 2004, The American journal of tropical medicine and hygiene.

Rickettsia japonica sp. nov., the etiological agent of spotted fever group rickettsiosis in Japan.

T. Uchiyama, D. Walker, T. Uchida, 1992, International journal of systematic bacteriology.

In vivo and in vitro role of gamma interferon in immune clearance of Rickettsia species.

D. Walker, H. Li, T. Jerrells, 1988, Advances in experimental medicine and biology.

Burkholderia pseudomallei as an Enteric Pathogen: Identification of Virulence Factors Mediating Gastrointestinal Infection

A. Torres, B. Borlee, Javier I. Sanchez-Villamil, 2020, Infection and Immunity.

Ehrlichia under our noses and no one notices.

D. Walker, D. Walker, 2005, Archives of virology. Supplementum.

The challenges of rickettsial diagnosis, research, and awareness in Latin America

D. Walker, 2013 .

Rickettsia bellii and Rickettsia amblyommii in Amblyomma Ticks from the State of Rondônia, Western Amazon, Brazil

V. Popov, M. Labruna, L. Camargo, 2004, Journal of medical entomology.

Epidemiology of rickettsial diseases

D. Fishbein, D. Walker, D. Walker, 1991, European Journal of Epidemiology.

Epidemiology and ecology of rickettsial diseases in the People's Republic of China.

D. Walker, M. Fan, S. R. Yu, 1987, Reviews of infectious diseases.

Isolation of a spotted fever group rickettsia from a patient and related ecologic investigations in Xinjiang Uygur Autonomous Region of China

D. Walker, Y. Jiang, M. Fan, 1987, Journal of clinical microbiology.

Changes in the adherens junctions of human endothelial cells infected with spotted fever group rickettsiae

G. Valbuena, D. Walker, 2005, Virchows Archiv.

Fc-Dependent Polyclonal Antibodies and Antibodies to Outer Membrane Proteins A and B, but Not to Lipopolysaccharide, Protect SCID Mice against Fatal Rickettsia conorii Infection

V. Popov, D. Walker, J. Olano, 2004, Infection and Immunity.

Ricketts creates rickettsiology, the study of vector-borne obligately intracellular bacteria.

D. Walker, 2004, The Journal of infectious diseases.

Expression of CX3CL1 (fractalkine) in mice with endothelial-target rickettsial infection of the spotted-fever group

G. Valbuena, D. Walker, 2004, Virchows Archiv.

Mechanisms of Intracellular Killing of Rickettsia conorii in Infected Human Endothelial Cells, Hepatocytes, and Macrophages

D. Walker, H. Feng, D. Walker, 2000, Infection and Immunity.

Isolation of Rickettsia akari from a patient in a region where Mediterranean spotted fever is endemic.

V. Popov, D. Walker, S. Radulovic, 1996, Clinical infectious diseases : an official publication of the Infectious Diseases Society of America.

Role of Phospholipase-Associated Penetration Mechanism in Cell Injury by Rickettsia rickettsii

B. Hegarty, D. Walker, D. Walker, 1983, Infection and immunity.

Mechanisms of immunity against rickettsiae. New perspectives and opportunities offered by unusual intracellular parasites.

G. Valbuena, D. Walker, H. Feng, 2002, Microbes and infection.

EDITORIAL RICKETTSIA RICKETTSII: AS VIRULENT AS EVER

D. Walker, 2002 .

Analysis of T-cell-dependent and -independent antigens of Rickettsia conorii with monoclonal antibodies

D. Walker, H. Feng, J. G. Wang, 1987, Infection and immunity.

Hemostatic/Fibrinolytic Protein Changes in C3H/HeN Mice Infected with Rickettsia conorii

A. Schmaier, D. Normolle, S. Gokhale, 2000, Thrombosis and Haemostasis.

Species-specific monoclonal antibodies to Rickettsia japonica, a newly identified spotted fever group rickettsia

T. Uchiyama, D. Walker, T. Uchida, 1990, Journal of clinical microbiology.

Regulatory Roles of CD1d-Restricted NKT Cells in the Induction of Toxic Shock-Like Syndrome in an Animal Model of Fatal Ehrlichiosis

N. Ismail, D. Walker, H. Stevenson, 2008, Infection and Immunity.

Exchange protein directly activated by cAMP plays a critical role in bacterial invasion during fatal rickettsioses

P. Boor, Xiaodong Cheng, V. Popov, 2013, Proceedings of the National Academy of Sciences.

New Insight into Immunity and Immunopathology of Rickettsial Diseases

G. Rini, I. Pepe, A. Cascio, 2011, Clinical & developmental immunology.

Human endothelial cell culture plaques induced by Rickettsia rickettsii

D. Walker, C. Edgell, W. T. Firth, 1982, Infection and immunity.

Endothelial Activation and Injury: The Mechanisms of Rickettsial Vasculiti

A. Sahni, D. Walker, S. Sahni, 2016 .

Rickettsia australis infection: a murine model of a highly invasive vasculopathic rickettsiosis.

D. Walker, H. Feng, J. Wen, 1993, The American journal of pathology.

Burkholderia pseudomallei ΔtonB Δhcp1 Live Attenuated Vaccine Strain Elicits Full Protective Immunity against Aerosolized Melioidosis Infection

A. Torres, Paul B Kilgore, D. Walker, 2019, mSphere.

Human granulocytic ehrlichiosis in the upper Midwest United States. A new species emerging?

J. Bakken, J. Dumler, L. Van Etta, 1994, JAMA.

Identification of the antigenic constituents of Ehrlichia chaffeensis.

J. Dumler, D. Walker, H. Feng, 1994, The American journal of tropical medicine and hygiene.

Persistent infection with Ehrlichia chaffeensis.

J. Dumler, D. Walker, W. Sutker, 1993, Clinical infectious diseases : an official publication of the Infectious Diseases Society of America.

Immunohistologic Demonstration of Ehrlichia canis

J. Aronson, D. Walker, J. Scimeca, 1990, Annals of the New York Academy of Sciences.

Immunopathology and Infectious Diseases Contribution of NK Cells to the Innate Phase of Host Protection Against an Intracellular Bacterium Targeting Systemic Endothelium

N. Ismail, D. Walker, R. Fang, 2012 .

MyD88 Mediates Instructive Signaling in Dendritic Cells and Protective Inflammatory Response during Rickettsial Infection

D. Walker, B. Judy, R. Fang, 2016, Infection and Immunity.

Ultrastructural variation of cultured Ehrlichia chaffeensis.

V. Popov, D. Walker, H. Feng, 1995, Journal of medical microbiology.

Sequelae of Lassa Fever: Postviral Cerebellar Ataxia

C. Ihekweazu, O. Tomori, S. Paessler, 2019, Open forum infectious diseases.

Persistence of rickettsiae in the partially viable gangrenous margins of amputated extremities 5 to 7 weeks after onset of Rocky Mountain spotted fever.

D. Walker, M. Hove, 1995, Archives of pathology & laboratory medicine.

Rocky Mountain spotted fever complicated by gangrene: report of six cases and review.

J. Dumler, P. Marcom, D. Sexton, 1993, Clinical infectious diseases : an official publication of the Infectious Diseases Society of America.

Fatal Neonatal Echovirus 6 Infection: Autopsy Case Report and Review of the Literature

H. Hawkins, Michael B. Smith, D. Walker, 2001, Modern Pathology.

A Cluster of Cases of Rocky Mountain Spotted Fever in an Area Of Colombia Not Known to be Endemic for This Disease.

M. Labruna, D. Walker, J. Rodas, 2019, The American journal of tropical medicine and hygiene.

Rocky Mountain Spotted Fever, Colombia

E. Castañeda, E. Parra, Pilar Carrillo, 2007, Emerging infectious diseases.

Fatal Human Infection with Rickettsia rickettsii, Yucatán, Mexico

H. Laviada-Molina, D. Walker, J. Olano, 2006, Emerging infectious diseases.

Detection of Rickettsia rickettsii in the tick Amblyomma cajennense in a new Brazilian spotted fever-endemic area in the state of Minas Gerais.

R. C. Leite, M. Labruna, D. Walker, 2005, Memorias do Instituto Oswaldo Cruz.

Unrecognized spotted fever group rickettsiosis masquerading as dengue fever in Mexico.

D. Walker, Xue-Jie Yu, X. Yu, 1996, The American journal of tropical medicine and hygiene.

Brazilian spotted fever in Espirito Santo, Brazil: description of a focus of infection in a new endemic region.

E. Breitschwerdt, R. Dietze, G. Corey, 1993, The American journal of tropical medicine and hygiene.

Fulminant Rocky Mountain spotted fever. Its pathologic characteristics associated with glucose-6-phosphate dehydrogenase deficiency.

H. Hawkins, D. Walker, D. Walker, 1983, Archives of pathology & laboratory medicine.

Human monocytic and granulocytic ehrlichioses. Discovery and diagnosis of emerging tick-borne infections and the critical role of the pathologist.

J. Dumler, D. Walker, David H. Walker, 1997, Archives of pathology & laboratory medicine.

Will pathologists play as important a role in the future as they have in the past against the challenge of infectious diseases.

J. Dumler, D. Walker, 1995, Infectious agents and disease.

Frequent occurrence of hepatic lesions in boutonneuse fever.

D. Walker, S. Mansueto, G. Tringali, 1986, Acta tropica.

Rocky mountain spotted fever: hepatic lesions in childhood cases.

M. D. Jackson, C. Kirkman, W. Bradford, 1986, Pediatric pathology.

The liver in Rocky Mountain spotted fever.

J. Adams, D. Walker, J. Adams, 1981, American journal of clinical pathology.

Encephalomyelitis Resulting from Chronic West Nile Virus Infection: A Case Report

D. Walker, A. Yassin, Bi-hung Peng, 2019, Journal of Neurology and Experimental Neuroscience.

Identification of the Target Cells of Orientia tsutsugamushi in Human Cases of Scrub Typhus

V. Popov, D. Walker, D. Wear, 2001, Modern Pathology.

Monoclonal antibody-based immunohistochemical diagnosis of rickettsialpox: the macrophage is the principal target.

D. Walker, H. Feng, S. Hudnall, 1999, Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc.

Diagnostic tests for Rocky Mountain spotted fever and other rickettsial diseases.

J. Dumler, D. Walker, 1994, Dermatologic clinics.

Correlation of rickettsial titers, circulating endotoxin, and clinical features in Rocky Mountain spotted fever.

J. Fischer, D. Walker, L. Kaplowitz, 1983, Archives of internal medicine.

Laboratory Diagnosis of Rocky Mountain Spotted Fever

M. Burday, J. Folds, D. Walker, 1980, Southern medical journal.

Correlation of Rickettsial Titers, Circulating Endotoxin, and Clinical Features in Rocky Mountain Spotted Fever

J. Fischer, D. Walker, L. Kaplowitz, 1983 .

Scrub Typhus - Scientific Neglect, Ever-Widening Impact.

D. Walker, D. Walker, 2016, The New England journal of medicine.

Rickettsia massiliae and Rickettsia conorii Israeli Spotted Fever Strain Differentially Regulate Endothelial Cell Responses

N. Milhano, D. Walker, R. Fang, 2015, PloS one.

SARS-CoV-2 Uses Nonstructural Protein 16 to Evade Restriction by IFIT1 and IFIT3

Vineet D. Menachery, M. Daugherty, S. Weaver, 2022, bioRxiv.

Strong Type 1, but Impaired Type 2, Immune Responses Contribute to Orientia tsutsugamushi-Induced Pathology in Mice

Hui Wang, Yuejin Liang, L. Soong, 2014, PLoS neglected tropical diseases.

Catastrophic antiphospholipid syndrome: A rare cause of disseminated microvascular thrombotic injury – a case report with pathological and molecular correlative studies

D. Walker, M. Elghetany, S. Lai, 2005, Pathology international.

Lassa virus hepatitis: a study of fatal Lassa fever in humans.

J. McCormick, K. Johnson, L. Elliott, 1986, The American journal of tropical medicine and hygiene.

Rickettsiosis subcommittee report to the tick-borne disease working group.

V. Fowler, C. Paddock, D. Walker, 2021, Ticks and tick-borne diseases.

Human Rickettsiosis Caused by Rickettsia parkeri Strain Atlantic Rainforest, Urabá, Colombia

M. Arboleda, D. Walker, J. Rodas, 2020, Emerging infectious diseases.

Rickettsiae as Emerging Infectious Agents.

D. Walker, R. Fang, L. Blanton, 2017, Clinics in laboratory medicine.

"Rickettsia amblyommii" induces cross protection against lethal Rocky Mountain spotted fever in a guinea pig model.

D. Walker, Nicole L. Mendell, D. Bouyer, 2014, Vector borne and zoonotic diseases.

Fatal Rocky Mountain Spotted Fever in a 2-Year-Old Child

C. Paddock, D. Walker, D. Walker, 2011 .

Detection of a spotted fever group rickettsia in Amblyomma cajennense (Acari: Ixodidae) in south Texas.

D. Walker, P. Teel, X. Yu, 1998, Journal of medical entomology.

Critical Role of Cytotoxic T Lymphocytes in Immune Clearance of Rickettsial Infection

D. Walker, J. Olano, H. Feng, 2001, Infection and Immunity.

Correction: A Hematogenously Disseminated Orientia tsutsugamsushi -Infected Murine Model of Scrub Typhus

L. Soong, J. Vinetz, G. Valbuena, 2014, PLoS Neglected Tropical Diseases.

A Hematogenously Disseminated Orientia tsutsugamsushi-Infected Murine Model of Scrub Typhus

L. Soong, G. Valbuena, D. Walker, 2014, PLoS neglected tropical diseases.

Unresolved problems related to scrub typhus: a seriously neglected life-threatening disease.

N. Day, D. Paris, D. Walker, 2013, The American journal of tropical medicine and hygiene.

First Serologic Evidence of Human Spotted Fever Group Rickettsiosis in Korea

D. Walker, Seung-Hyun Lee, Jong-Hyun Kim, 2004, Journal of Clinical Microbiology.

Hansenula polymorpha infection in a child with chronic granulomatous disease.

M. Mcginnis, J. Folds, D. Walker, 1980, Archives of pathology & laboratory medicine.

Identification of a unique spotted fever group rickettsia from humans in Japan.

T. Uchiyama, D. Walker, Xue-Jie Yu, 1989, The Journal of infectious diseases.

Protective monoclonal antibodies recognize heat-labile epitopes on surface proteins of spotted fever group rickettsiae

D. Walker, H. Li, B. Lenz, 1988, Infection and immunity.

Ultrastructural evidence of the ehrlichial developmental cycle in naturally infected Ixodes persulcatus ticks in the course of coinfection with Rickettsia, Borrelia, and a flavivirus.

V. Popov, D. Walker, J. Wen, 2007, Vector borne and zoonotic diseases.

Comparative pathology of Lassa virus infection in monkeys, guinea-pigs, and Mastomys natalensis.

F. Murphy, D. Walker, J. V. Lange, 1975, Bulletin of the World Health Organization.

Serologic survey for antibodies to Rickettsia among domestic and wild animal populations in Brazil.

M. Labruna, D. Walker, C. Mafra, 2009, Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases.

Prevalence of antibodies against spotted fever group rickettsiae in a rural area of Colombia.

G. Valbuena, D. Walker, Marylin Hidalgo, 2007, The American journal of tropical medicine and hygiene.

Prevalence of antibodies to spotted fever group rickettsiae in humans and domestic animals in a Brazilian spotted fever-endemic area in the state of São Paulo, Brazil: serologic evidence for infection by Rickettsia rickettsii and another spotted fever group Rickettsia.

M. Labruna, M. C. Horta, L. A. Sangioni, 2004, The American journal of tropical medicine and hygiene.

Molecular Evidence for a Spotted Fever Group Rickettsia Species in the Tick Amblyomma longirostre in Brazil

M. Labruna, L. Camargo, E. P. Camargo, 2004, Journal of medical entomology.

Rickettsiosis of the Genus Rickettsia in South America

D. Walker, C. Moron, C. Mafra, 2003, Annals of the New York Academy of Sciences.

A method for specific diagnosis of Rocky Mountain spotted fever on fixed, paraffin-embedded tissue by immunofluorescence.

D. Walker, B. Cain, 1978, The Journal of infectious diseases.

Rickettsia prowazekii (Epidemic or Louse-Borne Typhus)

D. Walker, L. Blanton, 2014 .

A preliminary investigation of Ehrlichia species in ticks, humans, dogs, and capybaras from Brazil.

S. W. Long, M. Yabsley, M. Labruna, 2007, Veterinary parasitology.

Acute Spotted Fever Rickettsiosis among Febrile Patients, Cameroon

R. Tesh, A. T. D. Da Rosa, D. Walker, 2004, Emerging infectious diseases.

Rickettsia Species Infecting Amblyomma cooperi Ticks from an Area in the State of São Paulo, Brazil, Where Brazilian Spotted Fever Is Endemic

V. Popov, M. Labruna, M. C. Horta, 2004, Journal of Clinical Microbiology.

Global Infectious Diseases

D. Walker, D. Walker, 1992, Springer Vienna.

Disseminated petriellidosis (allescheriosis).

D. Walker, M. Krigman, T. Adamec, 1978, Archives of pathology & laboratory medicine.

Diseases Caused by Fungi

M. Mcginnis, D. Walker, 2014 .

Effect of synthetic protease inhibitors of the amidine type on cell injury by Rickettsia rickettsii

R. Tidwell, D. Walker, J. Geratz, 1984, Antimicrobial Agents and Chemotherapy.

Fusarium infection in burned patients.

W. Schell, M. Mcginnis, D. Walker, 1981, American journal of clinical pathology.

The Pathology of Community-Acquired Pneumonia

D. Walker, C. P. Molina, D. Walker, 2002 .

Vascular permeability and coagulation during Rickettsia rickettsii infection in dogs.

E. Hardie, E. Breitschwerdt, M. Levy, 1990, American journal of veterinary research.

Emerging bacterial zoonotic and vector-borne diseases. Ecological and epidemiological factors.

R S Lane, D H Walker, D H Persing, 1996, JAMA.

Zygomycosis caused by Cunninghamella bertholletiae: clinical and pathologic aspects.

M. Mcginnis, D. Walker, W. Kaplan, 1982, Archives of pathology & laboratory medicine.

Invasive pulmonary aspergillosis associated with influenza.

J. Fischer, D. Walker, 1979, JAMA.

Human Monocytic Ehrlichiosis, Mexico City, Mexico

I. Becker, S. Avalos, D. Walker, 2020, Emerging infectious diseases.

Identification of a granulocytotropic Ehrlichia species as the etiologic agent of human disease

J. Bakken, J. Dumler, D. Walker, 1994, Journal of clinical microbiology.

Opportunistic fungal infection: What the clinician, pathologist, and mycologist can accomplish if they work together.

M. Mcginnis, D. Walker, 1982, Clinics in laboratory medicine.

Recent molecular insights into rickettsial pathogenesis and immunity.

A. Sahni, D. Walker, S. Sahni, 2013, Future microbiology.

Animal model of fatal human monocytotropic ehrlichiosis.

V. Popov, D. Walker, J. Olano, 2001, The American journal of pathology.

Human ehrlichiosis: hematopathology and immunohistologic detection of Ehrlichia chaffeensis.

J. Dawson, J. Dumler, D. Walker, 1993, Human pathology.

Mechanisms of Immunity to Ehrlichia muris: a Model of Monocytotropic Ehrlichiosis

D. Walker, H. Feng, 2004, Infection and Immunity.

Animal Model Animal Model of Fatal Human Monocytotropic Ehrlichiosis

V. Popov, D. Walker, J. Olano, 2001 .

Pathology of inhalational anthrax in 42 cases from the Sverdlovsk outbreak of 1979.

D H Walker, O. Yampolskaya, D. Walker, 1993, Proceedings of the National Academy of Sciences of the United States of America.

Emerging Pathogens: Challenges and Successes of Molecular Diagnostics

Jianli Dong, D. Walker, J. Olano, 2008, The Journal of Molecular Diagnostics.

Use of western blot to analyze the reactivity of sera from patients with mediterranean spotted fever

D. Walker, J. Herrero-Herrero, R. Ruiz-Beltrán, 1992, European Journal of Clinical Microbiology and Infectious Diseases.

Molecular Testing in Emerging Infectious Diseases

D. Walker, J. Dong, N. Ismail, 2016, Diagnostic Molecular Pathology.

Spotted fever group Rickettsia in small rodents from areas of low endemicity for Brazilian spotted fever in the eastern region of Minas Gerais State, Brazil.

M. Labruna, D. Walker, R. Freitas, 2013, The American journal of tropical medicine and hygiene.

Emergence of the ehrlichioses as human health problems.

J. Dumler, D. Walker, 1996, Emerging infectious diseases.

Second Fatal Case of Infective Endocarditis caused by Gemella bergeriae

Masood Ahmad, H. Hawkins, D. Walker, 2017 .

Evaluation of Burkholderia mallei ΔtonB Δhcp1 (CLH001) as a live attenuated vaccine in murine models of glanders and melioidosis

A. Torres, D. Walker, P. Bharaj, 2019, PLoS neglected tropical diseases.

Review: Protective Immunity and Immunopathology of Ehrlichiosis.

L. Soong, N. Ismail, D. Walker, 2022, Zoonoses.

Chapter 56 – Rickettsia

N. Ismail, D. Walker, X. Yu, 2009 .

Antigen-specific antibody and polyfunctional T cells generated by respiratory immunization with protective BurkholderiaΔtonBΔhcp1 live attenuated vaccines

A. Torres, D. Walker, P. Bharaj, 2021, npj Vaccines.

Antigen-specific antibody and polyfunctional T cells generated by respiratory immunization with protective BurkholderiaΔtonBΔhcp1 live attenuated vaccines

A. Torres, D. Walker, P. Bharaj, 2021, npj Vaccines.

A scrub typhus vaccine presents a challenging unmet need

D. Walker, Nicole L. Mendell, 2023, npj Vaccines.

Murine models of scrub typhus associated with host control of Orientia tsutsugamushi infection

D. Walker, Nicole L. Mendell, D. Bouyer, 2017, PLoS neglected tropical diseases.

Host transcriptomic profiling of CD-1 outbred mice with severe clinical outcomes following infection with Orientia tsutsugamushi

Yuejin Liang, L. Soong, D. Walker, 2022, bioRxiv.

Approaches to vaccines against Orientia tsutsugamushi

G. Valbuena, D. Walker, D. Walker, 2013, Front. Cell. Inf. Microbio..

Changing Dynamics of Human–Rickettsial Interactions

D. Walker, 2016, The American journal of tropical medicine and hygiene.

CHANGING DYNAMICS OF HUMAN-RICKETTSIAL INTERACTIONS Editorial Changing Dynamics of Human-Rickettsial Interactions

D. Walker, 2015 .

Human Ehrlichioses and Rickettsioses in Cameroon

D. Walker, L. Ndip, R. Ndip, 2012 .

Clinical and laboratory features of murine typhus in south Texas, 1980 through 1987.

J. Taylor, J. Dumler, D. Walker, 1991, JAMA.

Host- and microbe-related risk factors for and pathophysiology of fatal Rickettsia conorii infection in Portuguese patients.

J. Torgal, P. Proença, N. Ismail, 2008, The Journal of infectious diseases.

Human Monocytotropic Ehrlichiosis, Missouri

W. Hogrefe, D. Walker, J. Olano, 2003, Emerging infectious diseases.

Emerging and re-emerging rickettsioses: endothelial cell infection and early disease events

N. Ismail, D. Walker, D. Walker, 2008, Nature Reviews Microbiology.

Genotypic characterization of Orientia tsutsugamushi from patients in two geographical locations in Sri Lanka

H. J. de Silva, R. Premaratna, D. Walker, 2017, BMC Infectious Diseases.

Comparative ompA gene sequence analysis of Rickettsia felis-like bacteria detected in Haemaphysalis sulcata ticks and isolated in the mosquito C6/36 cell line.

T. Avšič-Županc, D. Walker, V. Punda-Polić, 2009, Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases.

A Murine Model of Waning Scrub Typhus Cross-Protection between Heterologous Strains of Orientia tsutsugamushi

D. Walker, Guang Xu, Nicole L. Mendell, 2022, Pathogens.

Rickettsial diseases in travelers.

D. Walker, D. Walker, 2003, Travel medicine and infectious disease.

Compartmentalized, functional role of angiogenin during spotted fever group rickettsia-induced endothelial barrier dysfunction: evidence of possible mediation by host tRNA-derived small noncoding RNAs

Yong Sun Lee, Inhan Lee, P. Boor, 2013, BMC Infectious Diseases.

Emerging and reemerging rickettsial diseases.

J. Dumler, D. Walker, 1994, The New England journal of medicine.

Serologic Evidence of Orientia Infection among Rural Population, Cauca Department, Colombia

D. Walker, Marylin Hidalgo, Á. Faccini-Martínez, 2023, Emerging infectious diseases.

Pathogenesis of rickettsial eschars: the tache noire of boutonneuse fever.

D. Walker, S. Mansueto, G. Tringali, 1988, Human pathology.

Rickettsialpox-like illness in a traveler.

D. Walker, R. Keller, V. Angeloni, 1997, Military medicine.

Flea-Borne Rickettsioses and Rickettsiae

D. Walker, L. Blanton, D. Walker, 2017, The American journal of tropical medicine and hygiene.

The histology of “taches noires” of boutonneuse fever and demonstration ofRickettsia conorii in them by immunofluorescence

B. Hegarty, D. Walker, M. R. Montenegro, 2004, Virchows Archiv A.

The occurrence of eschars in Rocky Mountain spotted fever.

D. Walker, R. Gay, M. Valdés-Dapena, 1981, Journal of the American Academy of Dermatology.

Atg5 Supports Rickettsia australis Infection in Macrophages In Vitro and In Vivo

Seungmin Hwang, V. Popov, N. Garg, 2018, Infection and Immunity.

Nucleocapsid mutations in SARS-CoV-2 augment replication and pathogenesis

Vineet D. Menachery, S. Weaver, Xuping Xie, 2021, bioRxiv.

Specific Measles Virus Antigens Disease-Relevant Antibodies That Recognize Panencephalitis Brain Reveals Repertoire in Subacute Sclerosing Disease: Analysis of the Expressed IgG with Inflammatory Central Nervous System Cloning the Antibody Response in Humans

D. Gilden, G. Owens, D. Walker, 2013 .

Ehrlichioses: An Important One Health Opportunity

D. Walker, Tais B. Saito, D. Walker, 2016, Veterinary sciences.

Molecular characterization of a novel Rickettsia species from Ixodes scapularis in Texas.

D. Walker, A. Billings, G. Teltow, 1998, Emerging infectious diseases.

Emerging Tickborne Bacteria in Cattle from Colombia

D. Walker, Marylin Hidalgo, Á. Faccini-Martínez, 2022, Emerging infectious diseases.

Detection of a Typhus Group Rickettsia in Amblyomma Ticks in the State of Nuevo Leon, Mexico

V. Popov, I. Fernández-Salas, D. Walker, 2005, Annals of the New York Academy of Sciences.

Opossums and Cat Fleas: New Insights in the Ecology of Murine Typhus in Galveston, Texas.

D. Walker, D. Bouyer, L. Blanton, 2016, The American journal of tropical medicine and hygiene.

Rickettsia sibirica Isolation from a Patient and Detection in Ticks, Portugal

J. Torgal, D. Walker, R. de Sousa, 2006, Emerging infectious diseases.

After Malaria Is Controlled, What's Next?

D. Walker, D. Walker, 2014, The American journal of tropical medicine and hygiene.

AFTER MALARIA IS CONTROLLED, WHAT'S NEXT? Presidential Address After Malaria Is Controlled, What's Next?

D. Walker, D. Walker, 2014 .

Sennetsu neorickettsiosis: a potentially prevalent, treatable, acutely incapacitating tropical infectious disease.

D. Walker, D. Walker, 2009, The American journal of tropical medicine and hygiene.

Emerging and re-emerging tick-transmitted rickettsial and ehrlichial infections.

J. Dumler, C. Paddock, D. Walker, 2008, The Medical clinics of North America.

Genotyping Rickettsia prowazekii Isolates

Yong Zhu, D. Walker, Xue-Jie Yu, 2008, Emerging infectious diseases.

Typhus Group Rickettsiae Antibodies in Rural Mexico

D. Walker, Chao Hong, Virginia E. Alcantara, 2004, Emerging infectious diseases.

Rickettsia felis: molecular characterization of a new member of the spotted fever group.

A. Azad, V. Popov, J. Stenos, 2001, International journal of systematic and evolutionary microbiology.

Serologic study of the prevalence of rickettsiosis in Yucatán: evidence for a prevalent spotted fever group rickettsiosis.

D. Walker, A. Billings, J. Zavala-Velázquez, 1999, The American journal of tropical medicine and hygiene.

Molecular and cellular pathobiology of Ehrlichia infection: targets for new therapeutics and immunomodulation strategies

D. Walker, J. McBride, D. Walker, 2011, Expert Reviews in Molecular Medicine.

EPIDEMIOLOGIC DEMONSTRATION OF HOST FACTORS INFLUENCING SEVERITY OF RICKETTSIAL INFECTIONS

D. Walker, 2006 .

Principles of the Malicious Use of Infectious Agents To Create Terror

D. Walker, David H Walker, 2003, Annals of the New York Academy of Sciences.

The Role of Host Factors in the Severity of Spotted Fever and Typhus Rickettsioses

D. Walker, 1990, Annals of the New York Academy of Sciences.

Haemolysis with Mediterranean spotted fever and glucose-6-phosphate dehydrogenase deficiency.

D. Raoult, D. Walker, H. Gallais, 1986, Transactions of the Royal Society of Tropical Medicine and Hygiene.

The Absence of Toll-Like Receptor 4 Signaling in C3H/HeJ Mice Predisposes Them to Overwhelming Rickettsial Infection and Decreased Protective Th1 Responses

J. Jordan, D. Walker, J. Olano, 2008, Infection and Immunity.

Ehrlichia chaffeensis Outer Membrane Protein 1-Specific Human Antibody-Mediated Immunity Is Defined by Intracellular TRIM21-Dependent Innate Immune Activation and Extracellular Neutralization

J. Crowe, Xiaofeng Zhang, Nurgun Kose, 2019, Infection and Immunity.

Aponomma hydrosauri, the reptile-associated tick reservoir of Rickettsia honei on Flinders Island, Australia.

V. Popov, J. Stenos, S. Graves, 2003, The American journal of tropical medicine and hygiene.

The rickettsial plaque. Evidence for direct cytopathic effect of Rickettsia rickettsii.

D. Walker, B. Cain, 1980, Laboratory investigation; a journal of technical methods and pathology.

Effect of immunosuppression on Rickettsia rickettsii infection in guinea pigs

F. Henderson, D. Walker, 1978, Infection and immunity.

Rickettsia, orientia, ehrlichia, anaplasma and coxiella: Typhus; spotted fevers; scrub typhus; ehrlichioses; Q fever

D. Walker, Xuejie Yu, 2012 .

Rickettsioses of the Spotted Fever Group around the World

D. Walker, 1989, The Journal of dermatology.

Experimental Rickettsia typhi Infection in Monodelphis domestica: Implications for Opossums as an Amplifying Host in the Suburban Cycle of Murine Typhus.

J. VandeBerg, D. Walker, Nicole L. Mendell, 2022, The American journal of tropical medicine and hygiene.

Severe human infection with Rickettsia felis associated with hepatitis in Yucatan, Mexico.

D. Walker, G. Peniche-Lara, J. Zavala-Castro, 2009, International journal of medical microbiology : IJMM.

Rickettsia felis, the agent of an emerging infectious disease: Report of a new case in Mexico.

H. Laviada-Molina, D. Walker, D. Bouyer, 2006, Archives of medical research.

Detection of Rickettsia felis in a New World Flea Species, Anomiopsyllus nudata (Siphonaptera: Ctenophthalmidae)

K. Gage, M. Kosoy, M. Labruna, 2005, Journal of medical entomology.

Identification of Ctenocephalides felis fleas as a host of Rickettsia felis, the agent of a spotted fever rickettsiosis in Yucatań, Mexico.

D. Walker, D. Bouyer, C. Moron, 2002, Vector borne and zoonotic diseases.

Quantitative study of Rickettsia massiliae in Rhipicephalus sanguineus organs.

V. Popov, N. Milhano, D. Walker, 2014, Ticks and tick-borne diseases.

Lymphangitis in a Portuguese Patient Infected with Rickettsia sibirica

J. Torgal, D. Walker, J. Olano, 2008, Emerging infectious diseases.

The Presence of Eschars, but Not Greater Severity, in Portuguese Patients Infected with Israeli Spotted Fever

J. Torgal, Sónia Dória-Nóbrega, P. Proença, 2005, Annals of the New York Academy of Sciences.

T cells mediate cross-protective immunity between spotted fever group rickettsiae and typhus group rickettsiae.

J. Jordan, G. Valbuena, D. Walker, 2004, The Journal of infectious diseases.

Rickettsial infection in murine models activates an early anti-rickettsial effect mediated by NK cells and associated with production of gamma interferon.

D. Walker, J. Olano, H. Feng, 2001, The American journal of tropical medicine and hygiene.

Increased Seroprevalence of Typhus Group Rickettsiosis, Galveston County, Texas, USA

D. Walker, Nicole L. Mendell, D. Bouyer, 2023, Emerging infectious diseases.

Rickettsiae Within the Fleas of Feral Cats in Galveston, Texas.

D. Walker, D. Bouyer, L. Blanton, 2019, Vector borne and zoonotic diseases.

Reemergence of Murine Typhus in Galveston, Texas, USA, 2013

D. Walker, D. Bouyer, L. Blanton, 2015, Emerging infectious diseases.

Simple Method to Differentiate among Rickettsia Species

D. Walker, K. Dzul-Rosado, G. Peniche-Lara, 2013, Journal of Molecular Microbiology and Biotechnology.

Rickettsia felis in the Americas

D. Walker, C. Mafra, M. Galvão, 2006, Annals of the New York Academy of Sciences.

Rickettsial phospholipase A2 as a pathogenic mechanism in a model of cell injury by typhus and spotted fever group rickettsiae.

V. Popov, D. Walker, H. Feng, 2001, The American journal of tropical medicine and hygiene.

Rickettsia in synanthropic and domestic animals and their hosts from two areas of low endemicity for Brazilian spotted fever in the eastern region of Minas Gerais, Brazil.

M. Labruna, I. Silveira, D. Walker, 2010, The American journal of tropical medicine and hygiene.

Revisiting Brazilian Spotted Fever Focus of Caratinga, Minas Gerais State, Brazil

D. Walker, M. Galvão, L. D. Cardoso, 2006, Annals of the New York Academy of Sciences.

Rickettsia felis in Ctenocephalides spp. Fleas, Brazil

D. Walker, Riva de Paula Oliveira, C. Mafra, 2002, Emerging infectious diseases.

Pathogenesis of Human Ehrlichioses

D. Walker, Tais B. Saito, D. Walker, 2015 .

Chapter 109 – Ehrlichia

D. Walker, N. Thirumalapura, D. Walker, 2015 .

An increase in human cases of spotted fever rickettsiosis in Yucatan, Mexico, involving children.

D. Walker, K. Dzul-Rosado, J. Zavala-Castro, 2008, The American journal of tropical medicine and hygiene.

Amblyomma imitator Ticks as Vectors of Rickettsia rickettsii, Mexico

V. Popov, S. Wikel, D. Walker, 2010, Emerging infectious diseases.

Short report: Rickettsia felis outer membrane protein A: a potential tool for diagnosis of patients with flea-borne spotted fever.

D. Walker, K. Dzul-Rosado, J. Zavala-Castro, 2008, The American journal of tropical medicine and hygiene.

Canine Rocky Mountain spotted fever: a kennel epizootic.

E. Breitschwerdt, M. Levy, D. Walker, 1985, American journal of veterinary research.

Clinical and laboratorial evidence of Rickettsia felis infections in Latin America.

D. Walker, C. Mafra, C. Chamone, 2004, Revista da Sociedade Brasileira de Medicina Tropical.

Molecular and clinical evidence of Ehrlichia chaffeensis infection in Cameroonian patients with undifferentiated febrile illness

M. Labruna, D. Walker, L. Ndip, 2009, Annals of tropical medicine and parasitology.

Detection of Rickettsia africae in patients and ticks along the coastal region of Cameroon.

V. Titanji, E. Fokam, D. Walker, 2004, The American journal of tropical medicine and hygiene.

Global infectious diseases : prevention, control, and eradication

D. Walker, 1992 .

[Characterization of Rickettsia spp. circulating in a silent peri-urban focus for Brazilian spotted fever in Caratinga, Minas Gerais, Brazil].

M. Labruna, D. Walker, S. Gennari, 2006, Cadernos de saude publica.

Protein characterization of Australian spotted fever group rickettsiae and monoclonal antibody typing of Rickettsia honei

J. Stenos, D. Walker, B. Ross, 1997, Journal of clinical microbiology.

Ultrastructural and Genetic Evidence of a Reptilian Tick, Aponomma hydrosauri, as a Host of Rickettsia honei in Australia

V. Popov, J. Stenos, S. Graves, 2003, Annals of the New York Academy of Sciences.

Correlation of the distribution of Rickettsia conorii, microscopic lesions, and clinical features in South African tick bite fever.

D. Walker, J. Gear, 1985, The American journal of tropical medicine and hygiene.

Rapid development of affinity matured monoclonal antibodies using RIMMS.

J. A. Payne, B. Champion, K. Kilpatrick, 1997, Hybridoma.

American mucocutaneous leishmaniasis. Culture of a Leishmania species from peripheral blood leukocytes.

D. Walker, J. L. Campbell, J. H. Bowdre, 1981, American journal of clinical pathology.

A Vaccine for Canine Rocky Mountain Spotted Fever: An Unmet One Health Need

D. Walker, M. Laroche, H. Narra, 2022, Vaccines.

Rickettsial and serologic evidence for prevalent spotted fever rickettsiosis in inner Mongolia.

D. Walker, C. Hong, L. Han, 1987, The American journal of tropical medicine and hygiene.

Tick-transmitted infectious diseases in the United States.

D. Walker, D. Walker, 1998, Annual review of public health.

Meningoencephalitis as a major manifestation of Rocky Mountain spotted fever.

L. F. Horney, D. Walker, 1988, Southern medical journal.

Fatal Monocytic Ehrlichiosis in Woman, Mexico, 2013

D. Walker, F. Solórzano-Santos, Carlos A. Serrano, 2016, Emerging infectious diseases.

Recombinant Ehrlichia P29 protein induces a protective immune response in a mouse model of ehrlichiosis.

Sunil Thomas, D. Walker, J. McBride, 2013, Vaccine.

Phylogenetic relationships of Anaplasma marginale and 'Ehrlichia platys' to other Ehrlichia species determined by GroEL amino acid sequences.

D. Walker, J. McBride, X. Yu, 2001, International journal of systematic and evolutionary microbiology.

Hemostatic changes in Rocky Mountain spotted fever and Mediterranean spotted fever.

D. Walker, M. Elghetany, 1999, American journal of clinical pathology.

[Emerging and reemerging rickettsiosis in an endemic area of Minas Gerais State, Brazil].

R. C. Leite, C. Caram, J. Lamounier, 2002, Cadernos de saude publica.

The role of Rhipicephalus sanguineus sensu lato saliva in the dissemination of Rickettsia conorii in C3H/HeJ mice

N. Milhano, D. Walker, R. de Sousa, 2015, Medical and veterinary entomology.

An animal model of a newly emerging human ehrlichiosis.

V. Popov, D. Walker, Tais B. Saito, 2015, The Journal of infectious diseases.

Ehrlichia chaffeensis: a prevalent, life-threatening, emerging pathogen.

N. Ismail, D. Walker, J. Olano, 2004, Transactions of the American Clinical and Climatological Association.

Isolation and characterization of a new strain of Ehrlichia chaffeensis from a patient with nearly fatal monocytic ehrlichiosis

J. Dumler, V. Popov, D. Walker, 1995, Journal of clinical microbiology.

The pathology of human Lassa fever.

D. Walker, W. Winn, D. L. Walker, 1975, Bulletin of the World Health Organization.

Experimental Lassa virus infection in the squirrel monkey.

F. Murphy, D. Walker, H. Wulff, 1975, The American journal of pathology.

Pathology and pathogenesis of arenavirus infections.

F. Murphy, D. Walker, David H. Walker, 1987, Current topics in microbiology and immunology.

Chronic granulomatous disease involving the central nervous system.

D. Walker, G. Okiye, D. Walker, 1983, Pediatric pathology.

Fatal Spotted Fever Rickettsiosis, Minas Gerais, Brazil

J. Dumler, D. Walker, J. Olano, 2003, Emerging infectious diseases.

Recent research milestones in the pathogenesis of human rickettsioses and opportunities ahead.

A. Sahni, D. Walker, S. Sahni, 2020, Future microbiology.

A Tick Vector Transmission Model of Monocytotropic Ehrlichiosis.

D. Walker, Tais B. Saito, 2015, The Journal of infectious diseases.

Structure-Based Vaccines Provide Protection in a Mouse Model of Ehrlichiosis

B. Luxon, Sunil Thomas, D. Walker, 2011, PloS one.

Persistent Infection Contributes to Heterologous Protective Immunity against Fatal Ehrlichiosis

N. Ismail, D. Walker, N. Thirumalapura, 2009, Infection and Immunity.

Clinical Manifestations, Epidemiology, and Laboratory Diagnosis of Human Monocytotropic Ehrlichiosis in a Commercial Laboratory Setting

W. Hogrefe, D. Walker, J. Olano, 2003, Clinical Diagnostic Laboratory Immunology.

Antigenic Variation of Ehrlichia chaffeensis Resulting from Differential Expression of the 28-Kilodalton Protein Gene Family

Hai Qi, S. W. Long, Xiaofeng Zhang, 2002, Infection and Immunity.

Characterization of the complete transcriptionally active ehrlichia chaffeensis 28 kDa outer membrane protein multigene family.

Xiaofeng Zhang, D. Walker, J. McBride, 2000, Gene.

The 120 kDa outer membrane protein of Ehrlichia chaffeensis: preferential expression on dense-core cells and gene expression in Escherichia coli associated with attachment and entry.

V. Popov, D. Walker, Xue-Jie Yu, 2000, Microbial pathogenesis.

Cloning and sequencing of the gene for a 120-kDa immunodominant protein of Ehrlichia chaffeensis.

D. Walker, X. Yu, P. Crocquet-Valdes, 1997, Gene.

Epidemiology, Molecular Biology, and Pathogenic Mechanisms of Ehrlichia Infections

D. Walker, Xue-Jie Yu, D. Walker, 2016 .

Ultrastructural differentiation of the genogroups in the genus Ehrlichia.

R. Tesh, J. Dumler, V. Popov, 1998, Journal of medical microbiology.

An Intradermal Environment Promotes a Protective Type-1 Response against Lethal Systemic Monocytotropic Ehrlichial Infection

J. Jordan, N. Ismail, D. Walker, 2006, Infection and Immunity.

Histologic, serologic, and molecular analysis of persistent ehrlichiosis in a murine model.

D. Walker, J. Olano, J. McBride, 2004, The American journal of pathology.

Ehrlichia chaffeensis (Human Monocytotropic Ehrlichiosis), Anaplasma phagocytophilum (Human Granulocytotropic Anaplasmosis), and Other Anaplasmataceae

J. Dumler, D. Walker, D. Walker, 2014 .

Human ehrlichioses.

D. Walker, J. Olano, D. Walker, 2007, The Medical clinics of North America.

The developmental cycle of Ehrlichia chaffeensis in vertebrate cells

V. Popov, D. Walker, Xue-Jie Yu, 2007, Cellular microbiology.

Rickettsiae and ehrlichiae within a city park: is the urban dweller at risk?

D. Walker, D. Bouyer, L. Blanton, 2014, Vector borne and zoonotic diseases.

COMMENTARY Value of Autopsy Emphasized in the Case Report of a Single Patient with Middle East Respiratory Syndrome

D. Walker, 2022 .

Rickettsia conorii Israeli tick typhus strain isolated from Rhipicephalus sanguineus ticks in Portugal.

J. Torgal, S. Barros, D. Walker, 2007, Vector borne and zoonotic diseases.

Widespread, simultaneous increase in the incidence of spotted fever group rickettsioses.

D. Walker, S. Mansueto, G. Tringali, 1986, The Journal of infectious diseases.

Kinetic study of platelets and fibrinogen in Lassa virus-infected monkeys and early pathologic events in Mopeia virus-infected monkeys.

J. McCormick, B. Evatt, S. Mitchell, 1985, The American journal of tropical medicine and hygiene.

The pathology of fatal Mediterranean spotted fever.

D. Walker, D. Walker, J. Herrero-Herrero, 1987, American journal of clinical pathology.

Prevalence of antibodies to spotted fever group rickettsiae along the eastern coast of the Adriatic sea

D. Walker, S. Radulovic, M. Morović, 1993, Journal of clinical microbiology.

Familial cases of boutonneuse fever

D. Walker, G. Vitale, S. Mansueto, 1987, European Journal of Epidemiology.

Isolation on « VERO » cells of a Spotted Fever Group Rickettsia « Mortilli strain » from Rhipicephalus sanguineus

A. Perna, D. Walker, S. Mansueto, 1986, European Journal of Epidemiology.

Antigens of Rickettsia conorii recognized by seropositive healthy people from Salamanca (Central-West Spain)

D. Walker, J. Herrero-Herrero, R. Ruiz-Beltrán, 2004, European Journal of Epidemiology.

Serologic Survey for Antibodies to Rickettsia sibirica in Inner Mongolia, People's Republic of China

D. Walker, Guangyuan Zhou, QING‐HUAI Liu, 1990, Annals of the New York Academy of Sciences.

Identification of a natural cycle involvingRickettsia typhi infection ofMonopsyllus sciurorum sciurorum fleas from the nests of the fat dormouse (Glis glis)

D. Walker, S. Radulovic, T. Trilar, 1994, European Journal of Epidemiology.

Antigenic diversity of Rickettsia conorii.

D. Walker, H. Li, H. Feng, 1992, The American journal of tropical medicine and hygiene.

Detection of a spotted fever group Rickettsia in the tick Haemaphysalis juxtakochi in Rondonia, Brazil.

M. Labruna, L. Camargo, E. P. Camargo, 2005, Veterinary parasitology.

Establishment of a Novel Endothelial Target Mouse Model of a Typhus Group Rickettsiosis: Evidence for Critical Roles for Gamma Interferon and CD8 T Lymphocytes

V. Popov, D. Walker, H. Feng, 2000, Laboratory Investigation.

Acute renal failure in Rocky Mountain spotted fever.

D. Walker, D. Walker, W. Mattern, 1979, Archives of internal medicine.

ANTICONVULSANT PROLONGATION OF SURVIVAL IN ADULT MURINE LYMPHOCYTIC CHORIOMENINGITIS II. ULTRASTRUCTURAL OBSERVATIONS OF PATHOGENETIC EVENTS

F. Murphy, D. Walker, S. Whitfield, 1977, Journal of neuropathology and experimental neurology.

Identification of rickettsiae in cutaneous biopsy specimens from dogs with experimental Rocky Mountain spotted fever.

E. Breitschwerdt, D. Walker, M. Nasisse, 1989, Journal of veterinary internal medicine.

Expression analysis of the T-cell-targeting chemokines CXCL9 and CXCL10 in mice and humans with endothelial infections caused by rickettsiae of the spotted fever group.

William Bradford, Gustavo Valbuena, W. Bradford, 2003, The American journal of pathology.

Identification of Rickettsia rickettsii in a guinea pig model by immunofluorescent and electron microscopic techniques.

F. Henderson, F. Murphy, D. Walker, 1977, The American journal of pathology.

Immunization with a portion of rickettsial outer membrane protein A stimulates protective immunity against spotted fever rickettsiosis.

A. Barrett, C. Diaz-Montero, D. Walker, 2001, Vaccine.

Immunopathology and Infectious Diseases Natural Killer Cells Promote Tissue Injury and Systemic Inflammatory Responses During Fatal Ehrlichia-Induced Toxic Shock-Like Syndrome

N. Ismail, D. Walker, H. Stevenson, 2010 .

The incidence of ehrlichial and rickettsial infection in patients with unexplained fever and recent history of tick bite in central North Carolina.

T. Gandhi, J. Dumler, D. Sexton, 1999, The Journal of infectious diseases.

A conserved, transcriptionally active p28 multigene locus of Ehrlichia canis.

D. Walker, J. McBride, X. Yu, 2000, Gene.

Comparison of Ehrlichia chaffeensisRecombinant Proteins for Serologic Diagnosis of Human Monocytotropic Ehrlichiosis

V. Popov, D. Walker, Xue-Jie Yu, 1999, Journal of Clinical Microbiology.

The recombinant 120-kilodalton protein of Ehrlichia chaffeensis, a potential diagnostic tool

D. Walker, X. Yu, P. Crocquet-Valdes, 1996, Journal of clinical microbiology.

The Genome of the Obligately Intracellular Bacterium Ehrlichia canis Reveals Themes of Complex Membrane Structure and Immune Evasion Strategies

N. Kyrpides, P. Richardson, N. Ivanova, 2006, Journal of bacteriology.

The genome of obligately intracellular Ehrlichia canis reveals themes of complex membrane structure and immune evasion strategies

N. Kyrpides, N. Ivanova, S. Malfatti, 2006 .

Progress and obstacles in vaccine development for the ehrlichioses

D. Walker, J. McBride, 2010, Expert review of vaccines.

Immunity and rickettsial infection: a review.

D. Walker, S. Mansueto, G. Tringali, 1983, Acta tropica.

Immunohistochemical evaluation of the cellular immune response to Rickettsia conorii in taches noires.

D. Walker, J. Herrero-Herrero, R. Ruiz-Beltrán, 1987, The Journal of infectious diseases.

An Unusual Cutaneous Manifestation in a Patient with Murine Typhus.

D. Walker, B. Kelly, L. Blanton, 2015, The American journal of tropical medicine and hygiene.

Rocky Mountain spotted fever and deficiency in glucose-6-phosphate dehydrogenase.

H. Kirkman, D. Walker, 1980, The Journal of infectious diseases.

Treatment of Tropical and Travel Related Rickettsioses

D. Walker, L. Blanton, D. Walker, 2016, Current Treatment Options in Infectious Diseases.

Inactivation of SAM-Methyltransferase is the Mechanism of Attenuation of a Historic Louse Borne Typhus Vaccine Strain

G. Weinstock, D. Walker, Xue-Jie Yu, 2014, PloS one.

Rickettsia and Rickettsial Diseases

D. Walker, Xue-Jie Yu, 2012 .

A mutation inactivating the methyltransferase gene in avirulent Madrid E strain of Rickettsia prowazekii reverted to wild type in the virulent revertant strain Evir.

D. Walker, Xue-Jie Yu, Jian-zhi Zhang, 2006, Vaccine.

Gamma interferon as a crucial host defense against Rickettsia conorii in vivo

D. Walker, G. Spitalny, H. Li, 1987, Infection and immunity.

Depletion of gamma interferon and tumor necrosis factor alpha in mice with Rickettsia conorii-infected endothelium: impairment of rickettsicidal nitric oxide production resulting in fatal, overwhelming rickettsial disease

V. Popov, D. Walker, H. Feng, 1994, Infection and immunity.

Interferon-γ and tumor necrosis factor-α exert their antirickettsial effect via induction of synthesis of nitric oxide

D. Walker, H. Feng, D. Walker, 1993 .

Pulmonary pathology of Rocky Mountain spotted fever (RMSF) in children.

V. Roggli, W. Bradford, P. Pratt, 1985, Pediatric pathology.

Laboratory diagnosis of Rocky Mountain spotted fever by immunofluorescent demonstration of Rickettsia rickettsii in cutaneous lesions

D. Walker, P. Olmstead, Barbara G. Cain, 1978 .

Fatal viscerotropic Rocky Mountain spotted fever. Report of a case diagnosed by immunofluorescence.

W. Green, D. Walker, B. Cain, 1978, The American journal of medicine.

Mouse Adapted SARS-CoV-2 protects animals from lethal SARS-CoV challenge

Vineet D. Menachery, S. Weaver, Xuping Xie, 2021, bioRxiv.

Human ehrlichioses in Brazil: first suspect cases.

R. C. Leite, D. Walker, C. Mafra, 2004, The Brazilian journal of infectious diseases : an official publication of the Brazilian Society of Infectious Diseases.

Injury restricted to cells infected with spotted fever group rickettsiae in parabiotic chambers.

B. Hegarty, D. Walker, W. T. Firth, 1984, Acta tropica.

Analysis and ultrastructural localization of Ehrlichia chaffeensis proteins with monoclonal antibodies.

V. Popov, D. Walker, H. Feng, 1996, The American journal of tropical medicine and hygiene.

SARS-CoV-2 Uses Nonstructural Protein 16 To Evade Restriction by IFIT1 and IFIT3

Vineet D. Menachery, M. Daugherty, S. Weaver, 2023, Journal of virology.

Lymphoreticular and myeloid pathogenesis of Venezuelan equine encephalitis in hamsters.

F. Murphy, D. Walker, A. Harrison, 1976, The American journal of pathology.

Restriction and expansion of Ehrlichia strain diversity.

D. Walker, Xue-Jie Yu, J. McBride, 2007, Veterinary parasitology.

Genetic Diversity of the 28-Kilodalton Outer Membrane Protein Gene in Human Isolates of Ehrlichia chaffeensis

D. Walker, Xue-Jie Yu, J. McBride, 1999, Journal of Clinical Microbiology.

Molecular Cloning of the Gene for a Conserved Major Immunoreactive 28-Kilodalton Protein of Ehrlichia canis: a Potential Serodiagnostic Antigen

D. Walker, Xue-Jie Yu, J. McBride, 1999, Clinical Diagnostic Laboratory Immunology.

Immunization with Ehrlichia P28 Outer Membrane Proteins Confers Protection in a Mouse Model of Ehrlichiosis

Sunil Thomas, N. Ismail, D. Walker, 2011, Clinical and Vaccine Immunology.

Glycosylation of Homologous Immunodominant Proteins of Ehrlichia chaffeensis and Ehrlichia canis

D. Walker, Xue-Jie Yu, J. McBride, 2000, Infection and Immunity.

Quantitative Proteomics of the Endothelial Secretome Identifies RC0497 as Diagnostic of Acute Rickettsial Spotted Fever Infections.

A. Brasier, Yingxin Zhao, J. Oteo, 2020, The American journal of pathology.

Endothelial Cell Proteomic Response to Rickettsia conorii Infection Reveals Activation of the Janus Kinase (JAK)-Signal Transducer and Activator of Transcription (STAT)-Inferferon Stimulated Gene (ISG)15 Pathway and Reprogramming Plasma Membrane Integrin/Cadherin Signaling*

A. Brasier, Yingxin Zhao, M. Gazi, 2015, Molecular & Cellular Proteomics.

Role of T lymphocyte subsets in immunity to spotted fever group Rickettsiae.

V. Popov, D. Walker, H. Feng, 1997, Journal of immunology.

Molecular Pathogenesis of Rickettsioses and Development of Novel Anti-Rickettsial Treatment by Combinatorial Peptide-Based Libraries

D. Walker, D. Walker, 2006 .

The realities of biodefense vaccines against Rickettsia.

D. Walker, 2009, Vaccine.

CD4+ CD25+ Foxp3− T-Regulatory Cells Produce both Gamma Interferon and Interleukin-10 during Acute Severe Murine Spotted Fever Rickettsiosis

N. Ismail, D. Walker, R. Fang, 2009, Infection and Immunity.

Effect of Antibody on the Rickettsia-Host Cell Interaction

V. Popov, D. Walker, H. Feng, 2004, Infection and Immunity.

Cross-protection between distantly related spotted fever group rickettsiae.

D. Walker, H. Feng, D. Walker, 2003, Vaccine.

Pathogenic Mechanisms of Diseases Caused by Rickettsia

G. Valbuena, D. Walker, J. Olano, 2003, Annals of the New York Academy of Sciences.

Identification of protective components of two major outer membrane proteins of spotted fever group Rickettsiae.

C. Diaz-Montero, D. Walker, H. Feng, 2001, The American journal of tropical medicine and hygiene.

Rocky mountain spotted fever.

D. Walker, A. Thorner, W. Petri, 1940, Clinical infectious diseases : an official publication of the Infectious Diseases Society of America.

Comparative antigenic analysis of spotted fever group rickettsiae from Israel and other closely related organisms.

E. Manor, V. Popov, J. Saada, 1995, The American journal of tropical medicine and hygiene.

C-reactive protein in boutonneuse fever

D. Walker, G. Vitale, S. Mansueto, 1986, European Journal of Clinical Microbiology.

Clinical, hematologic, and humoral immune response in female dogs inoculated with Rickettsia rickettsii and Rickettsia montana.

W. Corbett, W. Burgdorfer, E. Breitschwerdt, 1988, American journal of veterinary research.

Molecular Cloning and Characterization of the 120-Kilodalton Protein Gene of Ehrlichia canis and Application of the Recombinant 120-Kilodalton Protein for Serodiagnosis of Canine Ehrlichiosis

D. Walker, Xue-Jie Yu, J. McBride, 2000, Journal of Clinical Microbiology.

EIA with species-specific monoclonal antibodies: a novel seroepidemiologic tool for determination of the etiologic agent of spotted fever rickettsiosis.

D. Walker, S. Radulovic, R. Speed, 1993, Journal of Infectious Diseases.

Cloning, sequencing, and expression of the gene coding for an antigenic 120-kilodalton protein of Rickettsia conorii

D. Walker, K. Schuenke, D. Walker, 1994, Infection and immunity.

Subversion of Host Innate Immunity by Rickettsia australis via a Modified Autophagic Response in Macrophages

S. Widen, D. Walker, K. Khanipov, 2021, Frontiers in Immunology.

Mechanism of upper gastrointestinal hemorrhage in Mediterranean spotted fever.

D. Walker, J. Herrero-Herrero, R. Ruiz-Beltrán, 1990, Tropical and geographical medicine.

Evidence for a high prevalence of spotted fever group rickettsial infections in diverse ecologic zones of Inner Mongolia

G. Y. Chen, D. Walker, Q. Liu, 1995, Epidemiology and Infection.

Genetic and antigenic diversity of Ehrlichia chaffeensis: comparative analysis of a novel human strain from Oklahoma and previously isolated strains.

V. Popov, D. Walker, E. Westerman, 1997, The Journal of infectious diseases.

Quantitative Pathology of Inhalational Anthrax I: Quantitative Microscopic Findings

O. Yampolskaya, D. Walker, L. Grinberg, 2001, Modern Pathology.

Principles of Diagnosis of Infectious Diseases

D. Walker, 2014, Pathobiology of Human Disease.

Expression of the Rickettsia prowazekii pld or tlyC Gene in Salmonella enterica Serovar Typhimurium Mediates Phagosomal Escape

V. Popov, D. Walker, Xue-Jie Yu, 2005, Infection and Immunity.

Transcription of the Rickettsia felis ompA gene in naturally infected fleas.

D. Walker, D. Bouyer, J. Zavala-Castro, 2005, The American journal of tropical medicine and hygiene.

Biology of rickettsial diseases

D. Walker, 1988 .

Phylogenetic analysis of the rompB genes of Rickettsia felis and Rickettsia prowazekii European-human and North American flying-squirrel strains.

D. Walker, L. Foil, D. Bouyer, 2000, The American journal of tropical medicine and hygiene.

Interferon-gamma and tumor necrosis factor-alpha exert their antirickettsial effect via induction of synthesis of nitric oxide.

D. Walker, H. Feng, 1993, The American journal of pathology.

Obligate intracellular bacterium Ehrlichia inhibiting mitochondrial activity.

Jianzhi Zhang, V. Popov, D. Walker, 2011, Microbes and infection.

Identification and Functional Analysis of an Immunoreactive DsbA-Like Thio-Disulfide Oxidoreductase of Ehrlichia spp

V. Popov, D. Walker, L. Ndip, 2002, Infection and Immunity.

Rocky Mountain spotted fever mimicking acute cholecystitis.

V. Varma, D. Walker, H. Lesesne, 1985, Archives of internal medicine.

Tick-borne ehrlichioses

J. Dumler, D. Walker, J. Dumler, 2001 .

Rocky Mountain spotted fever: mimicry of appendicitis or acute surgical abdomen?

G. Hutchins, F. Henderson, D. Walker, 1986, American journal of diseases of children.

Rocky Mountain spotted fever. Gastrointestinal and pancreatic lesions and rickettsial infection.

D. Walker, M. B. Randall, 1984, Archives of pathology & laboratory medicine.

The rickettsial outer-membrane protein A and B genes of Rickettsia australis, the most divergent rickettsia of the spotted fever group.

J. Stenos, D. Walker, 2000, International journal of systematic and evolutionary microbiology.

Epidemiology of boutonneuse fever in western Sicily. Distribution and prevalence of spotted fever group rickettsial infection in dog ticks (Rhipicephalus sanguineus).

A. Perna, D. Walker, G. Vitale, 1986, American journal of epidemiology.

Cultivation of Ehrlichia chaffeensis in mouse embryo, Vero, BGM, and L929 cells and study of Ehrlichia-induced cytopathic effect and plaque formation

V. Popov, D. Walker, H. Feng, 1995, Infection and immunity.

Fibroblast growth factor receptor-1 mediates internalization of pathogenic spotted fever rickettsiae into host endothelium

A. Sahni, D. Walker, S. Sahni, 2017, PloS one.

The role of CD8 T lymphocytes in rickettsial infections

J. Dumler, D. Walker, 2015, Seminars in Immunopathology.

Rickettsia conorii infection of C3H/HeN mice. A model of endothelial-target rickettsiosis.

V. Popov, D. Walker, H. Feng, 1994, Laboratory investigation; a journal of technical methods and pathology.

Western immunoblotting analysis of the antibody responses of patients with human monocytotropic ehrlichiosis to different strains of Ehrlichia chaffeensis and Ehrlichia canis

D. Walker, L. C. Cullman, S. M. Chen, 1997, Clinical and diagnostic laboratory immunology.

QTQTN motif upstream of the furin-cleavage site plays a key role in SARS-CoV-2 infection and pathogenesis

Vineet D. Menachery, S. Weaver, V. Menachery, 2021, bioRxiv.

Cloning the antibody response in humans with inflammatory central nervous system disease: analysis of the expressed IgG repertoire in subacute sclerosing panencephalitis brain reveals disease-relevant antibodies that recognize specific measles virus antigens.

D. Gilden, G. Owens, D. Walker, 1999, Journal of immunology.

Pathology Rounds: Identifying Human Ehrlichiosis

J. Dumler, J. Barenfanger, D. Walker, 1996 .

Susceptibility of Rickettsia rickettsii to Tigecycline in a Cell Culture Assay and Animal Model for Rocky Mountain Spotted Fever.

D. Walker, N. Wilson, L. Blanton, 2019, The American journal of tropical medicine and hygiene.

A biosafety level-2 dose-dependent lethal mouse model of spotted fever rickettsiosis: Rickettsia parkeri Atlantic Rainforest-like isolate

D. Walker, Nicole L. Mendell, D. Bouyer, 2018 .

Vector Tick Transmission Model of Spotted Fever Rickettsiosis.

S. Karim, D. Walker, Tais B. Saito, 2019, The American journal of pathology.

Antigenic characterization of ehrlichiae: protein immunoblotting of Ehrlichia canis, Ehrlichia sennetsu, and Ehrlichia risticii

D. Raoult, J. Dumler, P. Brouqui, 1992, Journal of clinical microbiology.

Exit Mechanisms of the Intracellular Bacterium Ehrlichia

V. Popov, Sunil Thomas, D. Walker, 2010, PloS one.

Overcoming Barriers to the Transformation of the Genus Ehrlichia

D. Walker, Xue-Jie Yu, Ted Whitworth, 2005, Annals of the New York Academy of Sciences.

Ehrlichiae and Ehrlichioses: Pathogenesis and Vector Biology

N. Ismail, D. Walker, H. Stevenson, 2008 .

Whole-Genome Sequence of Rickettsia parkeri Strain Atlantic Rainforest, Isolated from a Colombian Tick

S. Widen, T. Wood, A. Routh, 2019, Microbiology Resource Announcements.

Antigen-capture enzyme immunoassay: a comparison with other methods for the detection of spotted fever group rickettsiae in ticks.

D. Walker, S. Radulovic, M. Morović, 1994, American Journal of Tropical Medicine and Hygiene.

Pseudodiphtheria: prominent pharyngeal membrane associated with fatal paraquat ingestion.

W. Schaffner, H. Brashear, W. A. Spickard, 1981, Annals of internal medicine.

Relapse of Legionnaires' Disease in a Renal Transplant Recipient

D. Walker, Terrence J. Lee, K. L. Sanders, 1980 .

Emerging Human Ehrlichioses: Recently Recognized, Widely Distributed, Life-Threatening Tick-Borne Diseases

D. Walker, D. Walker, 1998 .

Pathogenesis of myocarditis in Rocky Mountain spotted fever.

D. Walker, B. Cain, C. Paletta, 1980, Archives of Pathology & Laboratory Medicine.

Rickettsia sibirica infection in members of scientific expeditions to northern Asia

D. Musher, M. Lewin, D. Walker, 2003, The Lancet.

Bartonella spp. and Typhus Group Rickettsiae among Persons Experiencing Homelessness, São Paulo, Brazil

R. Z. Machado, M. Labruna, D. Walker, 2023, Emerging Infectious Diseases.

Predominance of Ehrlichia chaffeensis in Rhipicephalus sanguineus ticks from kennel-confined dogs in Limbe, Cameroon

D. Walker, L. Ndip, R. Ndip, 2009, Experimental and Applied Acarology.

Emerging Pathogens: Challenges and Successes of Molecular Diagnostics

Jianli Dong, D. Walker, J. Olano, 2008, The Journal of Molecular Diagnostics.

Analysis of Major Surface Polypeptides of Rickettsia japonica

T. Uchiyama, D. Walker, T. Uchida, 1994, Microbiology and immunology.

Demonstration of heat-labile and heat-stable epitopes of Rickettsia japonica on ultrathin sections.

T. Uchiyama, D. Walker, T. Uchida, 1994, Laboratory investigation; a journal of technical methods and pathology.

antibody typing of Rickettsia honei. fever group rickettsiae and monoclonal Protein characterization of Australian spotted

J. Stenos, D. Walker, B. Ross, 2013 .

Demonstration of spotted fever group rickettsiae in the tache noire of a healthy person in Sicily.

D. Walker, S. Mansueto, R. di Leo, 1984, The American journal of tropical medicine and hygiene.

Identification of spotted fever group rickettsiae from human and tick sources in the People's Republic of China.

D. Walker, J. G. Wang, 1987, The Journal of infectious diseases.

Sequence and characterization of an Ehrlichia chaffeensis gene encoding 314 amino acids highly homologous to the NAD A enzyme.

D H Walker, D. Walker, X J Yu, 1997, FEMS microbiology letters.

Ehrlichia chaffeensis and E. canis hypothetical protein immunoanalysis reveals small secreted immunodominant proteins and conformation-dependent antibody epitopes.

Xiaofeng Zhang, D. Walker, Tian Luo, 2020, NPJ vaccines.

Lymphocytic choriomeningitis: ultrastructural pathology.

F. Murphy, D. Walker, S. Whitfield, 1975, Experimental and molecular pathology (Print).