Results 1 to 10 of about 856 (117)

Ixodes tropicalis (Acari: Ixodidae) infesting a human and molecular detection of Rickettsia bellii, Colombia [PDF]

Biomédica: revista del Instituto Nacional de Salud, 2021
Introduction: Ixodes tropicalis is a little-known tick species reported parasitizing wild rodents only in Colombia and Perú. Objective: To report a case of I.
Juan Carlos Quintero, María L. Félix, José M. Venzal, Santiago Nava   +3 more
doaj   +2 more sources

The Effect of Rickettsia bellii on Anaplasma marginale Infection in Dermacentor andersoni Cell Culture [PDF]

Microorganisms, 2023
Anaplasma marginale is a tick-borne pathogen that causes bovine anaplasmosis, which affects cattle around the world. Despite its broad prevalence and severe economic impacts, limited treatments exist for this disease.
Joseph A. Aspinwall, Shelby M. Jarvis, Susan M. Noh, Kelly A. Brayton   +3 more
doaj   +2 more sources

Genotypic Characterization of Rickettsia bellii Reveals Distinct Lineages in the United States and South America. [PDF]

Biomed Res Int, 2018
The bacterium Rickettsia bellii belongs to a basal group of rickettsiae that diverged prior to the pathogenic spotted fever group and typhus group Rickettsia species. Despite a diverse representation of R. bellii across more than 25 species of hard and soft ticks in the American continent, phylogeographical relationships among strains of this basal ...
Krawczak FS, Labruna MB, Hecht JA, Paddock CD, Karpathy SE.   +4 more
europepmc   +2 more sources

Genome Sequence of Rickettsia bellii Illuminates the Role of Amoebae in Gene Exchanges between Intracellular Pathogens [PDF]

PLoS Genetics, 2006
The recently sequenced Rickettsia felis genome revealed an unexpected plasmid carrying several genes usually associated with DNA transfer, suggesting that ancestral rickettsiae might have been endowed with a conjugation apparatus.
Guillaume Blanc, Stéphane Audic, Hiroyuki Ogata   +2 more
exaly   +3 more sources

First record of Rickettsia bellii in Amblyomma varium and Amblyomma goeldii from the Eastern Amazon [PDF]

Revista Brasileira de Parasitologia Veterinária
This study investigated the presence of Rickettsia spp., Ehrlichia spp., Anaplasma spp., and Borrelia spp. DNA in questing ticks collected from a forest fragment under constant anthropogenic pressure in the state of Pará, Brazil. The fragment was divided
Izabela Mesquita Araújo, Kelly Karoline Gomes do Nascimento, Mateus Borges Silva, Isis Abel, Ana Cristina Mendes-Oliveira, Bruna de Azevedo Baêta, Claudia Bezerra da Silva, Matheus Dias Cordeiro   +7 more
doaj   +2 more sources

One health approach to Rickettsia spp.: Brazilian indigenous individuals, their dogs and ticks, and healthcare professionals [PDF]

One Health
Although Indigenous populations have historically overlapped the occurrence of vector-borne pathogens, no One Health approach study has investigated Rickettsia spp. in indigenous communities worldwide.
Louise Bach Kmetiuk, Vamilton Alvares Santarém, Daniele Rodrigues, Suelen Teixeira de Faria Resende, Isabella Braghin Ferreira, Rogério Giuffrida, Bianca Bárbara Fonseca da Silva, Lucianne Cardoso Neves, Raphaela Bueno Mendes Bittencourt, Leandro Meneguelli Biondo, Fabiano Borges Figueiredo, Felipe da Silva Krawczak, Alexander Welker Biondo   +12 more
doaj   +2 more sources

Ticks on wild vertebrates necropsied in a veterinary pathology service in central Brazil: species richness and pathogen screening [PDF]

Revista Brasileira de Parasitologia Veterinária
During 2022-2024, fresh carcasses of 35 wild animals from Goiás state and the Federal District, both in central Brazil, were sent to the veterinary pathology service of the University of Brasília.
Igor Silva Silito, Matheus Pasini-Martins, Isabella Pereira Pesenato, Marcelo Bahia Labruna, Márcio Botelho de Castro, Liz de Albuquerque Cerqueira, Thiago Fernandes Martins   +6 more
doaj   +3 more sources

High seroprevalence of Rickettsia spp. and molecular detection of Rickettsia amblyommatis in human-biting ticks from the eastern Amazon, Brazil [PDF]

Parasites & Vectors
Background In Brazil, spotted fever (SF) is caused by the bacteria Rickettsia parkeri and Rickettsia rickettsii. Seroepidemiological data on Rickettsia spp. in humans are rare in Brazil and nonexistent in the Amazon biome.
Mayra F. F. R. Ferreira, Lina de Campos Binder, Rafael M. S. Nogueira, Ruth M. M. e Silva, Carlos C. M. Ramos, Leonardo T. Dall’Agnol, Thiago Fernandes Martins, Raphaela B. M. Bittencourt, Felipe da Silva Krawczak, Livio Martins Costa-Junior, Marcelo Bahia Labruna, Mayara I. S. Lima, Hermes Ribeiro Luz   +12 more
doaj   +2 more sources

Development of a Rickettsia bellii-Specific TaqMan Assay Targeting the Citrate Synthase Gene. [PDF]

Journal of Medical Entomology, 2016
Sandor E Karpathy, Joy A Hecht, Felipe S Krawczak   +2 more
exaly   +2 more sources

Spatial Distribution of Equid Exposure to Rickettsia spp. in Goiás State, Midwestern Brazil [PDF]

Pathogens
This study sought to investigate the presence of anti-Rickettsia spp. antibodies in georeferenced serum samples from equids across all regions of the state of Goiás, while also presenting variables that indicate risk factors for the circulation of ...
Gracielle Teles Pádua, Mariana Avelar Tavares, Nicolas Jalowitzki de Lima, Warley Vieira de Freitas Paula, Gabriel Cândido dos Santos, Lucianne Cardoso Neves, Raphaela Bueno Mendes Bittencourt, Raquel Loren dos Reis Paludo, Ennya Rafaella Neves Cardoso, Bianca Barbara Fonseca da Silva, Bruno Rodrigues de Pádua, Ana Carolina Borsanelli, Filipe Dantas-Torres, Gina Paola Polo, Felipe da Silva Krawczak   +14 more
doaj   +2 more sources