Results 21 to 30 of about 3,644 (172)

Genomic Comparison of Virulent Rickettsia rickettsii Sheila Smith and Avirulent Rickettsia rickettsii Iowa [PDF]

open access: yesInfection and Immunity, 2008
ABSTRACT Rickettsia rickettsii is an obligate intracellular pathogen that is the causative agent of Rocky Mountain spotted fever. To identify genes involved in the virulence of R. rickettsii , the genome of an avirulent strain, R.
Damon W, Ellison   +5 more
openaire   +2 more sources

Serosurvey on rickettsiae of the spotted fever group and Rickettsia bellii among dogs in the state of Goiás, Brazil

open access: yesRevista Brasileira de Parasitologia Veterinária, 2020
The purpose of this study was to do a serological survey on three rickettsial species: Rickettsia rickettsii and Rickettsia parkeri, two species of the spotted fever group (SFG) that are considered to be great importance for public health; and Rickettsia
Lucianne Cardoso Neves   +8 more
doaj   +1 more source

Experimental infection of dogs with a Brazilian strain of Rickettsia rickettsii: clinical and laboratory findings

open access: yesMemorias do Instituto Oswaldo Cruz, 2008
The bacterium Rickettsia rickettsii is the etiological agent of an acute, severe disease called Rocky Mountain spotted fever in the United States or Brazilian spotted fever (BSF) in Brazil.
Eliane M Piranda   +6 more
doaj   +1 more source

Seroprevalence of Rickettsia bellii and Rickettsia felis in dogs, São José dos Pinhais, State of Paraná, Brazil Soroprevalência de Rickettsia bellii e Rickettsia felis em cães, São José dos Pinhais, Paraná, Brasil

open access: yesRevista Brasileira de Parasitologia Veterinária, 2010
Brazilian spotted fever (BSF) is a vector-borne zoonosis caused by Rickettsia rickettsii bacteria. Dogs can be host sentinels for this bacterium. The aim of the study was to determine the presence of antibodies against Rickettsia spp.
Fernanda Silva Fortes   +7 more
doaj   +1 more source

Production and characterization of monoclonal antibodies to Rickettsia rickettsii [PDF]

open access: yesInfection and Immunity, 1984
Five mouse ascitic fluids (MAFs) containing monoclonal antibody to Rickettsia rickettsii were produced from three original fusions by murine hybridoma technology. The five MAFs were fractionated and purified; each contained monoclonal antibody of the immunoglobulin G2a subclass.
J V, Lange, D H, Walker
openaire   +2 more sources

Genetic sequencing of a 1944 Rocky Mountain spotted fever vaccine

open access: yesScientific Reports, 2023
Rocky Mountain spotted fever (RMSF) is a rapidly progressive and often fatal tick-borne disease caused by Rickettsia rickettsii. Its discovery and characterization by Howard Ricketts has been hailed as a remarkable historical example of detection and ...
Yongli Xiao   +5 more
doaj   +1 more source

Detecção de anticorpos anti-Rickettsia rickettsii em cães residentes em área negligenciada no município de São Paulo, SP, Brasil [PDF]

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2020
RESUMO A febre maculosa brasileira (FMB), descrita inicialmente nos Estados Unidos como febre maculosa das Montanhas Rochosas, é uma antropozoonose relatada apenas no continente americano e causada pela bactéria Rickettsia rickettsii.
Z.Ê.S. Souza   +9 more
doaj   +1 more source

Rickettsia infection in five areas of the state of São Paulo, Brazil

open access: yesMemorias do Instituto Oswaldo Cruz, 2007
This study investigated rickettsial infection in animals, humans, ticks, and fleas collected in five areas of the state of São Paulo. Eight flea species (Adoratopsylla antiquorum antiquorum, Ctenocephalides felis felis, Polygenis atopus, Polygenis ...
Maurício C Horta   +4 more
doaj   +1 more source

External layers of Rickettsia prowazekii and Rickettsia rickettsii: occurrence of a slime layer [PDF]

open access: yesInfection and Immunity, 1978
Using a simple specific-antibody stabilization procedure on organisms gently liberated from their host cells, we have demonstrated by electron microscopy that Rickettsia prowazekii and Rickettsia rickettsii possess a coat of variable thickness, external to the outer leaflet of the cell wall and the structure designated by others as a "microcapsule ...
D J, Silverman   +3 more
openaire   +2 more sources

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