Results 101 to 110 of about 13,960 (198)

J Med Entomol [PDF]

open access: yes
It has been reported that starving ticks do not transmit spotted fever group Rickettsia immediately upon attachment because pathogenic bacteria exist in a dormant, uninfectious state and require time for 'reactivation' before transmission to a ...

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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

open access: yesRevista 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   +7 more
doaj  

Amblyomma imitator ticks as vectors of Rickettsia rickettsii, Mexico.

open access: yes, 2010
Rickettsia rickettsii is a gram-negative, obligate, intracellular bacterium and the cause of Rocky Mountain spotted fever (RMSF). In Mexico, its transmission has been attributed to Rhipicephalus sanguineus and Amblyomma cajennense ticks.
Wikel, Stephen Kenneth   +13 more
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Genes asociados a virulencia y patogenicidad de Rickettsia rickettsii: Una revisión sistemática [PDF]

open access: yes
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   +3 more
core   +1 more source

Experimental evaluation of Amblyomma dubitatum (Acari: Ixodidae) as a biological vector of Rickettsia rickettsii (Rickettsiales: Rickettsiaceae)

open access: yes, 2014
Fêmeas ingurgitadas de Amblyomma dubitatum, naturalmente infectadas por Rickettsia bellii, foram utilizadas para estabelecer uma colônia de laboratório.
Sakai, Renata Kazuko
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Rickettsiales and rickettsial diseases in Australia [PDF]

open access: yes, 2010
Currently, there are 12 known Rickettsiales species in Australia. However research into the diversity and range of these agents in Australia is still far from complete.
Izzard, Leonard
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A Novel Application of Galleria mellonella Larvae to Study Pathogenesis of Rickettsia rickettsii Infection

open access: yes, 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
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Estudo de eficácia in vitro de doxiciclina frente à cultura de Rickettsia rickettsii/ Study of in vitro efficacy of doxycycline against the culture of Rickettsia rickettsii [PDF]

open access: yes, 2019
A Febre Maculosa Brasileira é uma zoonose causada por Rickettsia rickettsii com manifestações clínicas iniciais gerais e inespecíficos com altas taxas de mortalidade quando não tratados. Apesar de clinicamente efetivo frente a R. rickettsii, são escassos
Marcili, Arlei   +5 more
core   +1 more source

Emerg Infect Dis

open access: yes
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.

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