Results 31 to 40 of about 4,543 (198)

Hosts mobility and spatial spread of Rickettsia rickettsii. [PDF]

PLoS Comput Biol, 2018
There are a huge number of pathogens with multi-component transmission cycles, involving amplifier hosts, vectors or complex pathogen life cycles. These complex systems present challenges in terms of modeling and policy development. A lethal tick-borne infectious disease, the Brazilian Spotted Fever (BSF), is a relevant example of that.
Polo G, Mera Acosta C, Labruna MB, Ferreira F, Brockmann D.   +4 more
europepmc   +6 more sources

Application of reverse vaccinology for the identification of epitope candidates from Rickettsia rickettsii [PDF]

, 2020
643-647Rocky mountain spotted fever is a severe disease caused by Rickettsia rickettsii that frequently causes the death of the patients. As there are not effective vaccines for this disease, we employed reverse vaccinology to find epitope candidates ...
Lugo-Caballero, C, Rosado-Vallado, M, Dzul-Rosado, K, Arias-León, J, Peniche-Lara, G, Balam-Romero, B   +5 more
core   +4 more sources

In vitro susceptibilities of Rickettsia rickettsii and Rickettsia conorii to roxithromycin and pristinamycin [PDF]

Antimicrobial Agents and Chemotherapy, 1989
In vitro susceptibilities of Rickettsia rickettsii and Rickettsia conorii to roxithromycin, pristinamycin, and the pristinamycin compounds, P1 and P2, were determined by a dye uptake assay and a plaque assay. The MICs were 1 microgram/ml for roxithromycin, 2 micrograms/ml for pristinamycin, greater than 256 micrograms/ml for P1, and 2 micrograms/ml for
M, Drancourt, D, Raoult
openaire   +2 more sources

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

Infection 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, Tina R, Clark, Daniel E, Sturdevant, Kimmo, Virtaneva, Stephen F, Porcella, Ted, Hackstadt   +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

Revista 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, Ana Laura Gonçalves Barreto, Mariana Xavier de Souza, Danieli Brolo Martins, Amália Regina Mar Barbieri, Maria Carolina de Azevedo Serpa, Sebastián Muñoz-Leal, Marcelo Bahia Labruna, Felipe da Silva Krawczak   +8 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

Revista 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, Iara Silveira, Jonas Moraes-Filho, Ronaldo Viana Leite, José Edivaldo Bonacim, Alexander Welker Biondo, Marcelo Bahia Labruna, Marcelo Beltrão Molento   +7 more
doaj   +1 more source

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

Memorias 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, Marcelo B Labruna, Adriano Pinter, Pedro M Linardi, Teresinha T S Schumaker   +4 more
doaj   +1 more source

Genetic sequencing of a 1944 Rocky Mountain spotted fever vaccine

Scientific 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, Paul A. Beare, Sonja M. Best, David M. Morens, Marshall E. Bloom, Jeffery K. Taubenberger   +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]

Arquivo 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, B.V. Moraes, F.S. Krawczak, L. Zulzke, T.V. Carvalho, A.O. Sousa, R.G. Agopian, A. Marcili, M.B. Labruna, J. Moraes-Filho   +9 more
doaj   +1 more source

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

Infection 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, C L, Wisseman, A D, Waddell, M, Jones   +3 more
openaire   +2 more sources