Results 31 to 40 of about 13,960 (198)

Long term neurologic sequelae in a Mexican rocky mountain spotted fever case

Brazilian Journal of Infectious Diseases, 2019
During the second half of the twentieth century, neurologic sequelae associated with central nervous system impairment caused by Rickettsia rickettsii were studied widely and exclusively in the United States.
Karla Rossanet Dzul-Rosado, Cesar Lugo-Caballero, Alejandra Salcedo-Parra, Raymundo Daniel López-Soto, Álvaro A. Faccini-Martínez   +4 more
doaj   +1 more source

Novel rickettsia in ticks, Tasmania, Australia [PDF]

, 2009
A novel rickettsia was detected in Ixodes tasmani ticks collected from Tasmanian devils. A total of 55% were positive for the citrate synthase gene by quantitative PCR.
Nathan Unsworth, Cox, E., Fenwick, S., Graves, S., Izzard, L., Stan Fenwick, Erika Cox, Leonard Izzard, John Stenos, Unsworth, N., Stenos, J., Stephen Graves   +11 more
core   +1 more source

Comparative growth of spotted fever group Rickettsia spp. strains in Vero cells

Memorias do Instituto Oswaldo Cruz, 2016
In Brazil, the spotted fever group (SFG) Rickettsia rickettsii and Rickettsia parkeri related species are the etiological agents of spotted fever rickettsiosis. However, the SFG, Rickettsia rhipicephali, that infects humans, has never been reported.
Arannadia Barbosa Silva, Myrian Morato Duarte, Vinicius Figueiredo Vizzoni, Ana Íris de Lima Duré, Diego Montenegro Lopéz, Rita de Maria Seabra Nogueira, Carlos Augusto Gomes Soares, Erik Machado-Ferreira, Gilberto Salles Gazêta   +8 more
doaj   +1 more source

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 of antibodies against spotted fever group Rickettsia spp. in horse farms in Northern Paraná, Brazil Soroprevalência de anticorpos contra Rickettsia spp. do grupo febre maculosa em equinos de haras no Norte do Paraná, Brasil

Revista Brasileira de Parasitologia Veterinária, 2010
Brazilian spotted fever (BSF) is an emerging disease most likely caused by Rickettsia rickettsii. The objective of the present study was to estimate the seroprevalence of BSF rickettsia infections in equines from six horse farms located in Londrina ...
Katia Tamekuni, Roberta dos Santos Toledo, Mauro de Freitas Silva Filho, Valeska Bender Haydu, Richard Campos Pacheco, José Henrique Cavicchioli, Marcelo Bahia Labruna, John Stephen Dumler, Odilon Vidotto   +8 more
doaj   +1 more source

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

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

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