Results 81 to 90 of about 4,015 (217)

Variable effects of wildlife and livestock on questing tick abundance across a topographical–climatic gradient

Ecosphere, Volume 16, Issue 2, February 2025.
Abstract Large‐bodied wild ungulates are declining worldwide, while domestic livestock continue to increase in abundance. Such changes in large herbivore communities should have strong effects on the control of ticks and tick‐borne disease as they can indirectly modify habitat and directly serve as final hosts for ticks' lifecycles.
Stephanie Copeland, Samantha Sambado, Devyn Orr, An Bui, Andrea Swei, Hillary S. Young   +5 more
wiley   +1 more source

Primary isolation of spotted fever group rickettsiae from Amblyomma cooperi collected from Hydrochaeris hydrochaeris in Brazil

Memorias do Instituto Oswaldo Cruz, 1996
This paper reports the first isolation of a spotted fever group rickettsia from an Amblyomma cooperi ixodid collected from a capybara (Hydrochaeris hydrochaeris) in an endemic area of spotted fever in the County of Pedreira, State of São Paulo, Brazil ...
Elba Regina Sampaio de Lemos, Heloísa Helena Barbosa Melles, Sílvia Colombo, Raimundo Diogo Machado, José Rodrigues Coura, Maria Angélica Arpon Guimarães, Selênio R Sanseverino, Aline Moura   +7 more
doaj   +1 more source

A review of the genus Rickettsia in Central America

Research and Reports in Tropical Medicine, 2018
Sergio E Bermúdez C,1 Adriana Troyo2 1Department of Medical Entomology, Gorgas Memorial Institute for Health Research, Panamá; 2Vector Research Laboratory, Tropical Diseases Research Center, Faculty of Microbiology, University of Costa Rica,
Bermúdez C SE, Troyo A
doaj  

Antibodies against rickettsiae from spotted fever groups in horses from two mesoregions in the state of Santa Catarina, Brazil

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2013
Bacteria of the Rickettsia genus are agents of Brazilian Spotted Fever (BSF), a zoonotic disease which is difficult to diagnose, evolves quickly and can result in death. Antibodies against Rickettsia spp.
A.P. Medeiros, A.B. Moura, A.P. Souza, V. Bellato, A.A. Sartor, A. Vieira-Neto, J. Moraes-Filho, M.B. Labruna   +7 more
doaj   +1 more source

Intranuclear growth of Rickettsia rickettsii [PDF]

Journal of Bacteriology, 1968
W, Burgdorfer, R L, Anacker, R G, Bird, D S, Bertram   +3 more
openaire   +2 more sources

Dynamics of Actin-Based Movement by Rickettsia rickettsii in Vero Cells [PDF]

, 1999
Robert A. Heinzen, Scott S. Grieshaber, Levi S. Van Kirk, Clinton J. Devin   +3 more
openalex   +1 more source

Antibodies for Rickettsia spp. in patients with negative serology for dengue virus, leptospirosis, and meningococcal disease in municipalities of São Paulo State, Brazil

Revista da Sociedade Brasileira de Medicina Tropical
INTRODUCTION Brazilian spotted fever is an infectious disease with a high mortality rate if not treated early. Differential diagnosis is difficult, as the first clinical signs are non-specific and can be confused with other diseases.
Juliana Anacleto Cabral Prata, Celso Eduardo de Souza, Rodrigo Nogueira Angerami, Taíse Marongio Cotrim de Moraes Barbosa, Fabiana Cristina Pereira dos Santos, Silvia Colombo, Vânia Martins Fontes Del Guercio, Maria Rita Donalísio   +7 more
doaj   +1 more source

Transcriptional Regulation of Endothelial Cell Tissue Factor Expression during Rickettsia rickettsii Infection: Involvement of the Transcription Factor NF-κB [PDF]

, 1998
Rui-Jin Shi, Patricia J. Simpson‐Haidaris, Norma B. Lerner, Victor J. Marder, David J. Silverman, Lee Ann Sporn   +5 more
openalex   +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  

Amblyomma imitatorTicks as Vectors ofRickettsia rickettsii, Mexico

Emerging Infectious Diseases, 2010
Real-time PCR of Amblyomma imitator tick egg masses obtained in Nuevo Leon State, Mexico, identified a Rickettsia species. Sequence analyses of 17-kD common antigen and outer membrane protein A and B gene fragments showed to it to be R. rickettsii, which suggested a potential new vector for this bacterium.
Karla A. Oliveira, Adriano Pinter, Aaron Medina-Sanchez, Venkata D. Boppana, Stephen K. Wikel, Tais B. Saito, Thomas Shelite, Lucas S. Blanton, Vsevolod Popov, Pete D. Teel, David H. Walker, Marcio A.M. Galvao, Claudio Mafra, Donald H. Bouyer   +13 more
openaire   +3 more sources