Results 101 to 110 of about 4,543 (198)

A Novel Application of Galleria mellonella Larvae to Study Pathogenesis of Rickettsia rickettsii Infection

, 2021
Rickettsia are obligate intracellular tick-borne bacteria that cause acute undifferentiated febrile illness accompanied by headache, malaise, myalgias, and disseminated endothelial infection.
Jones, Jacob M
core  

Antibodies for Rickettsia spp. in patients with negative serology for dengue virus, leptospirosis, and meningococcal disease in municipalities of São Paulo State, Brazil

Revista da Sociedade Brasileira de Medicina Tropical
INTRODUCTION Brazilian spotted fever is an infectious disease with a high mortality rate if not treated early. Differential diagnosis is difficult, as the first clinical signs are non-specific and can be confused with other diseases.
Juliana Anacleto Cabral Prata, Celso Eduardo de Souza, Rodrigo Nogueira Angerami, Taíse Marongio Cotrim de Moraes Barbosa, Fabiana Cristina Pereira dos Santos, Silvia Colombo, Vânia Martins Fontes Del Guercio, Maria Rita Donalísio   +7 more
doaj   +1 more source

Genes asociados a virulencia y patogenicidad de Rickettsia rickettsii: Una revisión sistemática

Objective: To review recent literature on the function of genes associated with virulence and pathogenicity in Rickettsia rickettsii. Materials and Methods: This systematic review followed the PRISMA 2020 guidelines for systematic reviews.
Cortés Sánchez, Me Lin, Cortés Sánchez, Mei Lin, Jiménez Vega, Florinda, Escárcega Ávila, Angélica María   +3 more
core   +2 more sources

Study of infection by Rickettsiae of the spotted fever group in humans and ticks in an urban park located in the City of Londrina, State of Paraná, Brazil Estudo da infecção por Rickettsias do grupo da febre maculosa em humanos e carrapatos de um parque urbano na Cidade de Londrina, Estado do Paraná

Revista da Sociedade Brasileira de Medicina Tropical, 2011
INTRODUCTION: Spotted fevers are emerging zoonoses caused by Rickettsia species in the spotted fever group (SFG). Rickettsia rickettsii is the main etiologic agent of Brazilian spotted fever (BSF) and it is transmitted by Amblyomma spp. ticks.
Roberta Santos Toledo, Katia Tamekuni, Mauro de Freitas Silva Filho, Valeska Bender Haydu, Richard Campos Pacheco, Marcelo Bahia Labruna, John Stephen Dumler, Odilon Vidotto   +7 more
doaj  

Seroprevalence of Rickettsia rickettsii and Rickettsia parkeri in dogs during a Brazilian Spotted Fever outbreak in the State of Rio de Janeiro

, 2018
The present paper is the first to perform this evaluation in dogs from the cities of Natividade, Porciuncula and Varre-Sai. The aim of this study is to search for Spotted Fever Group Rickettsia in canine sera using indirect immunofluorescence assay and ...
N.C. Cunha (5553515), A.B.M. Fonseca (5553524), A.H. Fonseca (5553530), A. Pinter (5553527), I.T. Poubel (5553518), M.D. Cordeiro (5381723), N.R.P. Almosny (5553521)   +6 more
core   +1 more source

Feeding Period Required by Amblyomma aureolatum Ticks for Transmission of Rickettsia rickettsii to Vertebrate Hosts

, 2014
Rocky Mountain spotted fever is endemic to the São Paulo metropolitan area, Brazil, where the etiologic agent, Rickettsia rickettsii, is transmitted to humans by adult Amblyomma aureolatum ticks.
João Fábio Soares, Marcelo B. Labruna, Danilo G. Saraiva, Herbert S. Soares   +3 more
core   +1 more source

Limited transcriptional responses of Rickettsia rickettsii exposed to environmental stimuli.

, 2009
Rickettsiae are strict obligate intracellular pathogens that alternate between arthropod and mammalian hosts in a zoonotic cycle. Typically, pathogenic bacteria that cycle between environmental sources and mammalian hosts adapt to the respective ...
Virtaneva Kimmo, Ted Hackstadt, Sturdevant Daniel E., Ellison Damon W., Hackstadt Ted, Damon W Ellison, Tina R Clark, Daniel E Sturdevant, Clark Tina R., Kimmo Virtaneva   +9 more
core   +1 more source

Aerosol infection of monkeys with Rickettsia rickettsii [PDF]

Bacteriological Reviews, 1966
S, Saslaw, H N, Carlisle
openaire   +2 more sources

Emerg Infect Dis

Amblyomma aureolatum ticks are vectors of Rickettsia rickettsii, the etiologic agent of Rocky Mountain spotted fever in Brazil. Maintenance of R. rickettsii in nature depends on horizontal transmission along tick generations.

core  

Infecção experimental de Capivaras (Hydrochoerus hydrochaeris) com uma cepa de Rickettsia rickettsii derivada de Amblyomma sculptum

, 2019
Brazilian Spotted Fever (BSF) is recognized as the most lethal tick-borne disease in Brazil and other countries in the western hemisphere. Rickettsia rickettsii is its etiological agent, and in its natural history, ticks and mammals perform an ...
Hernandez, Alejandro Ramirez
core   +1 more source