Results 71 to 80 of about 21,258 (244)

Anti rickettsia-antibody for spotted fever group in horses and dogs in the North of Paraná Stated, Brazil [PDF]

open access: yes, 2010
The Brazilian Spotted Fever (BSF) is a zoonosis that can be fatal if not trteated. As there are few studies of the BSF in the Paraná State, the occurrence of BSF was serologically investigated in dogs and horses by indirect immunofluorescence assay (IFA),
GALHARDO, J.A.   +6 more
core   +2 more sources

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

Identification of novel surface-exposed proteins of Rickettsia rickettsii by affinity purification and proteomics. [PDF]

open access: yesPLoS ONE, 2014
Rickettsia rickettsii, the causative agent of Rocky Mountain spotted fever, is the most pathogenic member among Rickettsia spp. Surface-exposed proteins (SEPs) of R. rickettsii may play important roles in its pathogenesis or immunity.
Wenping Gong   +5 more
doaj   +1 more source

Comparative ultrastructural study on the cell envelopes of Rickettsia prowazekii, Rickettsia rickettsii, and Rickettsia tsutsugamushi [PDF]

open access: yesInfection and Immunity, 1978
Rickettsia tsutsugamushi differs from other rickettsiae in its cell envelope organization. The differences were made evident through a comparative study of the outer envelope of R. tsutsugamushi, R. prowazekii, and R. rickettsii by electron microscopy.
David Silverman, Charles L. Wisseman
openaire   +3 more sources

Rickettsia felis infection in cat fleas Ctenocephalides felis felis [PDF]

open access: yes, 2010
The present study evaluated the rickettsial infection in a laboratory colony of cat fleas, Ctenocephalides felis felis (Bouche) in Brazil. All flea samples (30 eggs, 30 larvae, 30 cocoons, 30 males, and 30 females) tested by polymerase chain reaction ...
CORREIA, Thaís R.   +5 more
core   +2 more sources

Rickettsial spotted fever in capoeirão Village, Itabira, Minas Gerais, Brazil Rickettsiose do grupo da febre maculosa na Vila de Capoeirão, Itabira, Minas Gerais, Brasil

open access: yesRevista do Instituto de Medicina Tropical de São Paulo, 2008
The present study investigated the infection by spotted fever rickettsia in an endemic area for Brazilian spotted fever (BSF; caused by Rickettsia rickettsii) in Minas Gerais State, Brazil.
Manoella Campostrini Barreto Vianna   +8 more
doaj   +1 more source

Transformation Frequency of a mariner-Based Transposon in Rickettsia rickettsii [PDF]

open access: yesJournal of Bacteriology, 2011
ABSTRACTTransformation frequencies of amariner-based transposon system inRickettsia rickettsiiwere determined using a plaque assay system for enumeration and isolation of mutants. Sequence analysis of insertion sites in bothR. rickettsiiandR. prowazekiiindicated that insertions were random.
Amanda M. Lackey   +7 more
openaire   +3 more sources

Newly Recognized Spotted Fever Group Rickettsia as Cause of Severe Rocky Mountain Spotted Fever–Like Illness, Northern California, USA

open access: yesEmerging Infectious Diseases
The incidence of spotted fever group (SFG) rickettsioses in the United States has tripled since 2010. Rocky Mountain spotted fever, the most severe SFG rickettsiosis, is caused by Rickettsia rickettsii.
Will S. Probert   +11 more
doaj   +1 more source

Acute febrile illness is associated with Rickettsia spp infection in dogs [PDF]

open access: yes, 2015
BACKGROUND: Rickettsia conorii is transmitted by Rhipicephalus sanguineus ticks and causes Mediterranean Spotted Fever (MSF) in humans. Although dogs are considered the natural host of the vector, the clinical and epidemiological significance of R ...
A Cascio   +69 more
core   +2 more sources

Upscaling the surveillance of tick-borne pathogens in the French Caribbean Islands [PDF]

open access: yes, 2020
Despite the high burden of vector-borne disease in (sub)tropical areas, few information are available regarding the diversity of tick and tick-borne pathogens circulating in the Caribbean.
Albina, Emmanuel   +9 more
core   +2 more sources

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