Rickettsial Spotted Fever Group
Mostrando 1-12 de 67 artigos, teses e dissertações.
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1. Circulation of spotted fever group rickettsiae among dogs seropositive for Leishmania spp. in an urban area of Brazil
Abstract INTRODUCTION: Dogs play an epidemiological role in several vector-borne diseases that affect human and animal health worldwide. We aimed to identify rickettsial circulation among dogs with canine visceral leishmaniasis (CVL) from a region endemic for both diseases. METHODS: CVL-seropositive dogs were screened for spotted fever group rickettsiae
Rev. Soc. Bras. Med. Trop.. Publicado em: 21/02/2019
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2. Candidatus Rickettsia andeanae, a spotted fever group agent infecting Amblyomma parvum ticks in two Brazilian biomes
Adult ticks of the species Amblyomma parvum were collected from the vegetation in the Pantanal biome (state of Mato Grosso do Sul) and from horses in the Cerrado biome (state of Piauí) in Brazil. The ticks were individually tested for rickettsial infection via polymerase chain reaction (PCR) targeting three rickettsial genes, gltA, ompA and ompB. Overall, 6
Mem. Inst. Oswaldo Cruz. Publicado em: 2014-04
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3. Detecção e caracterização molecular de riquétsias em potenciais vetores procedentes de focos ativos de febre maculosa do Estado do Rio de Janeiro. / Detection and molecular characterization of Rickettsia in potential vectors from active focuses of spotted fever in the State of Rio de Janeiro.
Brazilian spotted fever caused by spotted fever group (SFG) rickettsiae and mainly transmitted by ticks occurs in the southeast, where human deaths are recorded. In the state of Rio de Janeiro, lethality due to rickettsial infection is high, but only recently epidemiological investigations were conducted, and indicated the participation of new species of ect
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/02/2012
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4. A prevalent alpha-proteobacterium Paracoccus sp. in a population of the Cayenne ticks (Amblyomma cajennense) from Rio de Janeiro, Brazil
As Rocky Mountain Spotted Fever is the most common tick-borne disease in South America, the presence of Rickettsia sp. in Amblyomma ticks is a possible indication of its endemicity in certain geographic regions. In the present work, bacterial DNA sequences related to Rickettsia amblyommii genes in A. dubitatum ticks, collected in the Brazilian state of Mato
Genet. Mol. Biol.. Publicado em: 16/10/2012
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5. Rickettsia parkeri: a Rickettsial pathogen transmitted by ticks in endemic areas for spotted fever rickettsiosis in southern Uruguay
At first Rickettsia conorii was implicated as the causative agent of spotted fever in Uruguay diagnosed by serological assays. Later Rickettsia parkeri was detected in human-biting Amblyomma triste ticks using molecular tests. The natural vector of R. conorii, Rhipicephalus sanguineus, has not been studied for the presence of rickettsial organisms in Uruguay
Revista do Instituto de Medicina Tropical de São Paulo. Publicado em: 2012-06
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6. Spotted fever group Rickettsia infecting ticks (Acari: Ixodidae) in the state of Santa Catarina, Brazil
During 2006-2008, a total of 260 adult ticks were collected from domestic and wild animals in different regions of the state of Santa Catarina (SC), Brazil, including areas where human cases of Brazilian spotted fever have been reported. Collected ticks belonging to nine species (Amblyomma aureolatum, Amblyomma cajennense, Amblyomma dubitatum, Amblyomma long
Memórias do Instituto Oswaldo Cruz. Publicado em: 2011-12
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7. Detection and molecular characterization of rickettsiae in humans, potential vectors and domestic animals of southeastern Brazil. / Detecção e caracterização molecular de riquétsias em humanos, potenciais vetores e animais domésticos da região sudeste do Brasil.
This project aimed to diagnose rickettsial diseases using molecular analysis methods on human, tick, flea, dog and horse samples from endemic areas in the States of São Paulo (SP) and Rio de Janeiro (RJ). A diagnosis of Rickettsia rickettsii infecting Amblyomma cajennense and humans in the State of SP was made, indicating that this is the only species respo
Publicado em: 2010
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8. Laboratorial study of tick-borne infectious agents in patients with brazilian Lyme-like disease (Baggio-Yoshinari Syndrome) / Estudo laboratorial de agentes infecciosos transmitidos por carrapatos em pacientes com doença de Lyme-símile brasileira (síndrome Baggio-Yoshinari)
Human Monocytic Ehrlichiosis, Human Granulocytic Anaplasmosis, Babesiosis, Rocky Mountain Spotted Fever and Lyme Disease (LD) are tick-borne diseases commonly found in the North hemisphere. In Brazil, a LD-like illness called Baggio- Yoshinari Syndrome (BYS) is described, but epidemiological, clinical and laboratorial features are different from the original
Publicado em: 2010
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9. Experimental infection of dogs with a Brazilian strain of Rickettsia rickettsii: clinical and laboratory findings
The bacterium Rickettsia rickettsii is the etiological agent of an acute, severe disease called Rocky Mountain spotted fever in the United States or Brazilian spotted fever (BSF) in Brazil. In addition to these two countries, the disease has also been reported to affect humans in Mexico, Costa Rica, Panama, Colombia and Argentina. Like humans, dogs are also
Memórias do Instituto Oswaldo Cruz. Publicado em: 2008-11
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10. Survey of Rickettsia spp. in Amblyomma dubitatum Neumann 1899 and Amblyomma triste Koch 1844 ticks from Brazil and Uruguay, respectivily / Pesquisa de Rickettsia spp. em carrapatos Amblyomma dubitatum Neumann 1899 e Amblyomma triste Koch 1844, provenientes do Brasil e Uruguai, respectivamente
Owing to the potential role of the tick Amblyomma dubitatum and Amblyomma triste in the transmission of the Spotted Fever Group (SFG) Rickettsia, this study evaluated infection by Rickettsia in ticks collected in Brazil and Uruguay, where rickettsial infection is endemic. A total of 841 (367 males e 474 females) A. dubitatum adult ticks were collected in Ped
Publicado em: 2007
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11. Antibodies to Rickettsia rickettsii, Rickettsia typhi, Coxiella burnetii, Bartonella henselae, Bartonella quintana, and Ehrlichia chaffeensis among healthy population in Minas Gerais, Brazil
Rickettsial diseases except those belonging to spotted fever group rickettsioses are poorly studied in South America particularly in Brazil where few epidemiological reports have been published. We describe a serosurvey for Rickettsia rickettsii, R. typhi, Coxiella burnetii, Bartonella henselae, B. quintana, and Ehrlichia chaffeensis in 437 healthy people fr
Memórias do Instituto Oswaldo Cruz. Publicado em: 2005-12
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12. Detection of Brazilian spotted fever infection by polymerase chain reaction in a patient from the state of São Paulo
Brazilian spotted fever (BSF) cases have been increasing in the state of São Paulo but no genomic information about local rickettsia isolated from humans has been well documented. We recovered spotted-fever group rickettsiae from a sample of patient blood cultured in Vero cells using the shell vial technique. Rickettsial DNA fragments (gltA, ompA, and, ompB
Memórias do Instituto Oswaldo Cruz. Publicado em: 2005-05