Results 51 to 60 of about 211 (113)

[Survey of Rickettsia spp in the ticks Amblyomma cajennense and Amblyomma dubitatum in the State of São Paulo].

Revista da Sociedade Brasileira de Medicina Tropical, 2009
The presence of rickettsial infection was surveyed in 3,545 Amblyomma cajennense ticks and 2,666 Amblyomma dubitatum ticks. Using the hemolymph test, polymerase chain reaction and isolation of Rickettsia in cell cultures, all of the Amblyomma cajennense were negative, whereas 634 (23.8%) of the Amblyomma dubitatum ticks were shown to be infected with ...
Richard Campos, Pacheco, Maurício Cláudio, Horta, Adriano, Pinter, Jonas, Moraes-Filho, Thiago Fernandes, Martins, Marcello Schiavo, Nardi, Savina Silvana Aparecida Lacerra de, Souza, Celso Eduardo de, Souza, Matias Pablo Juan, Szabó, Leonardo José, Richtzenhain, Marcelo Bahia, Labruna   +10 more
openaire   +1 more source

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

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   +1 more source

Free-living ticks in a cerrado fragment, state of Mato Grosso do Sul, Brazil

Bioscience Journal, 2018
The fatal cases of spotted fever reported in some Brazilian municipalities are generally associated with the presence of ticks and capybaras (Hydrochoerus hydrochaeris). The urban forest fragments where this rodent is present are of great concern.
Jaqueline Matias, Wilson Werner Koller, Marcos Valerio Garcia, Jacqueline Cavalcante Barros, Maria Dolores Esteve-Gassent, André de Abreu Rangel Aguirre, Leandro de Oliveira Souza Higa, Namor Pinheiro Zimmermann, Renato Andreotti   +8 more
doaj   +3 more sources

Dichotomous key to larvae of the genus Amblyomma (Parasitiformes: Ixodidae) in Brazil, with morphological description and redescription of the larval stage of 30 Amblyomma species

Ticks and Tick-Borne Diseases
Ticks of the genus Amblyomma are of great medical and veterinary importance in Brazil, where they regularly parasitize wild and domestic animals and will bite humans that enter rural and forest areas for work and recreation purposes.
Thiago F. Martins, Adriano Pinter, Vera L.F. de Camargo-Neves, Agustín Estrada-Peña, Pablo H. Nunes, Fábio Barbieri, Kátia M. Famadas, Marcelo B. Labruna   +7 more
doaj   +1 more source

Spotted fever group Rickettsia infecting ticks (Acari: Ixodidae) in the state of Santa Catarina, Brazil

Memorias do Instituto Oswaldo Cruz, 2011
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.
Alessandra Pereira Medeiros, Antonio Pereira de Souza, Anderson Barbosa de Moura, Marcia Sangaletti Lavina, Valdomiro Bellato, Amélia Aparecida Sartor, Fernanda Aparecida Nieri-Bastos, Leonardo José Richtzenhain, Marcelo Bahia Labruna   +8 more
doaj   +1 more source

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  

Detection of Rickettsia rickettsii in the tick Amblyomma cajennense in a new Brazilian spotted fever-endemic area in the state of Minas Gerais

Memorias do Instituto Oswaldo Cruz, 2005
The present study evaluated rickettsial infection in Amblyomma spp. ticks collected in a farm in Coronel Pacheco, a Brazilian spotted fever (BSF) endemic area. A total of 78 A. cajennense and 78 A.
Elizângela Guedes, Romário C Leite, Márcia CA Prata, Richard C Pacheco, David H Walker, Marcelo B Labruna   +5 more
doaj   +1 more source

Integrated tick control on a farm with the presence of capybaras in a Brazilian spotted fever endemic region

Revista Brasileira de Parasitologia Veterinária, 2019
Ticks of the Amblyomma cajennense complex present high infestation rates. These ticks transmit the bacterium Rickettsia rickettsii, which causes Brazilian Spotted Fever.
Shirley Batista de Araújo, Karina Araújo dos Anjos, Fernanda Calvo Duarte, Leonardo Costa Fiorini, Felipe Eduardo de Matos Godoi, Paulo Henrique Selbmann Sampaio, Márcia Cristina Mendes   +6 more
doaj   +1 more source

Rickettsia infection in five areas of the state of São Paulo, Brazil

Memorias 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, Marcelo B Labruna, Adriano Pinter, Pedro M Linardi, Teresinha T S Schumaker   +4 more
doaj   +1 more source

Molecular identification of Rickettsia felis in ticks and fleas from an endemic area for Brazilian Spotted Fever

Memorias do Instituto Oswaldo Cruz, 2008
Rickettsioses are arthropod-borne diseases caused by parasites from the Order Rickettsiales. The most prevalent rickettsial disease in Brazil is Brazilian Spotted Fever (BSF).
KA Oliveira, LS Oliveira, CCA Dias, A Silva Jr, MR Almeida, G Almada, DH Bouyer, MAM Galvão, CL Mafra   +8 more
doaj   +1 more source