120 hasil untuk "Marcelo B Labruna"

Capybaras, ticks, and spotted fever

Marcelo B. Labruna

Revista Colombiana de Ciencias Pecuarias, Vol. 30 · 2017 · Inggris · DOAJ Scopus

Rickettsia felis and Changing Paradigms about Pathogenic Rickettsiae

Marcelo B. Labruna; David Walker

Emerging Infectious Diseases, Vol. 20 No. 10 · 2014 · Inggris · DOAJ Scopus

Rickettsioses in Latin America, Caribbean, Spain and Portugal

Marcelo B. Labruna; Salim Mattar V

Revista Mvz Cordoba, Vol. 16 No. 2 · 2011 · Spanyol · DOAJ Scopus

Data on genus and infectious by Rickettsia were retrospectively compiled from the critical review literature regarding all countries in Latin America, Caribbean islands, Portugal and Spain. We considered all Rickettsia records reported for human and/or animal hosts, and/or invertebrate hosts…

Transmission dynamics and control of Rickettsia rickettsii in populations of Hydrochoerus hydrochaeris and Amblyomma sculptum

Gina Polo; Carlos Mera Acosta; Marcelo B. Labruna dkk.

PLOS Neglected Tropical Diseases, Vol. 11 No. 6 · 2017 · Inggris · PLOS Scopus

Background: Brazilian Spotted Fever (BSF), caused by the bacterium Rickettsia rickettsii, is the tick-borne disease that generates the largest number of human deaths in the world. In Brazil, the current increase of BSF human cases has been associated with the presence and expansion of capybaras…

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Carrapatos (Acari: Ixodidae) capturados na Reserva Natural da Vale do Rio Doce, Linhares, Espírito Santo Ticks (Acari: Ixodidae) collected in the Natural Reserve of the Vale do Rio Doce, Linhares, State of Espírito Santo

Maria Ogrzewalska; Alexandre Uezu; Fernando Ferreira dkk.

Revista Brasileira de Parasitologia Veterinária, Vol. 16 No. 3 · 2007 · Portugis · DOAJ Scopus

O presente trabalho confirma, após décadas sem novos relatos, a ocorrência dos carrapatos Amblyomma obolongoguttatum Koch, 1844, A. brasiliense Aragão, 1908, e A. humerale Koch, 1844 no Estado do Espírito Santo, Brasil, além do primeiro relato de A. naponense (Packard,1869) para este estado.We…

Ritmo de queda de Rhipicephalus sanguineus (Acari: Ixodidae) de cães artificialmente infestados Drop off rhythm of Rhipicephalus sanguineus (Acari: Ixodidae) of artificially infested dogs

Gustavo F. Paz; Marcelo B. Labruna; Romário C. Leite

Revista Brasileira de Parasitologia Veterinária, Vol. 17 No. 3 · 2008 · Portugis · DOAJ Scopus

O ritmo de queda de Rhipicephalus sanguineus (Latreille) foi avaliado para duas populações do Brasil; uma de Monte Negro, Estado de Rondônia, e outra de Belo Horizonte, Estado de Minas Gerais. Infestações artificiais com carrapatos das duas populações foram realizadas em cães domésticos mantidos em…

Hosts mobility and spatial spread of Rickettsia rickettsii

Gina Polo; Carlos Mera Acosta; Marcelo B. Labruna dkk.

PLOS Computational Biology, Vol. 14 No. 12 · 2018 · Inggris · PLOS Scopus

There are a huge number of pathogens with multi-component transmission cycles, involving amplifier hosts, vectors or complex pathogen life cycles. These complex systems present challenges in terms of modeling and policy development. A lethal tick-borne infectious disease, the Brazilian Spotted…

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Ticks and tick-borne rickettsiae from dogs in El Salvador, with report of the human pathogen Rickettsia parkeri

Luis E. Romero; Lina C. Binder; Arlei Marcili dkk.

Ticks and Tick-Borne Diseases, Vol. 14 No. 5 · 2023 · Inggris · DOAJ Scopus

Twelve tick species have been reported in El Salvador; however, information regarding ticks infesting domestic dogs is lacking, and pathogenic tick-borne Rickettsia species have never been reported in El Salvador. This work evaluated ticks infesting 230 dogs from ten municipalities in El Salvador…

Vigilancia de la infección por Rickettsia sp. en capibaras (Hydrochoerus hydrochaeris) un modelo potencial de alerta epidemiológica en zonas endémicas

Jorge Miranda; Verónica Contreras; Yesica Negrete dkk.

Biomédica: revista del Instituto Nacional de Salud, Vol. 31 No. 2 · 2011 · Spanyol · DOAJ Scopus

Introducción. Los capibaras o chigüiros (Hydrochoerus hydrochaeris) son huéspedes amplificadores de Rickettsia sp. Usualmente se encuentran parasitados por la garrapata Amblyomma cajennense, principal vector de rickettsiosis en Suramérica. Los capibaras pueden ser usados como potenciales centinelas…

Rickettsia parkeri in Uruguay

Richard C. Pacheco; José M. Venzal; Leonardo J. Richtzenhain dkk.

Emerging Infectious Diseases, Vol. 12 No. 11 · 2006 · Inggris · DOAJ Scopus

Feeding Period Required by Amblyomma aureolatum Ticks for Transmission of Rickettsia rickettsii to Vertebrate Hosts

Danilo G. Saraiva; Herbert S. Soares; João Fábio Soares dkk.

Emerging Infectious Diseases, Vol. 20 No. 9 · 2014 · Inggris · DOAJ Scopus

Rocky Mountain spotted fever is endemic to the São Paulo metropolitan area, Brazil, where the etiologic agent, Rickettsia rickettsii, is transmitted to humans by adult Amblyomma aureolatum ticks. We determined the minimal feeding period required by A. aureolatum nymphs and adults to transmit R…

Comments on the validity of Haemaphysalis cinnabarina Koch, 1844 (Acari: Ixodidae), a taxon known solely by the type specimens from Northern Brazil Comentários sobre a validade de Haemaphysalis cinnabarina Koch, 1844 (Acari: Ixodidae) um táxon conhecido somente pelos espécimes tipos do Norte do Brasil

Darci M. Barros-Battesti; Valeria C. Onofrio; Márcia Arzua dkk.

Revista Brasileira de Parasitologia Veterinária, Vol. 17 No. 1 · 2008 · Portugis · DOAJ Scopus

The types of Haemaphysalis cinnabarina Koch and its junior synonym H. sanguinolenta Koch, both from State of Pará, Brazil, have been studied. Although H. cinnabarina has been considered a synonym of H. punctata Canestrini and Fanzago (a Palearctic species), they were compared to another closely…

Comparative Evaluation of the Vector Competence of Four South American Populations of the Rhipicephalus sanguineus Group for the Bacterium Ehrlichia canis , the Agent of Canine Monocytic Ehrlichiosis

Jonas Moraes-Filho; Felipe S. Krawczak; Francisco B. Costa dkk.

PLOS ONE, Vol. 10 No. 9 · 2015 · Inggris · PLOS Scopus

This study compared the vector competence of four populations of Rhipicephalus sanguineus group ticks for the bacterium Ehrlichia canis, the agent of canine monocytic ehrlichiosis (CME). Ticks (larvae and nymphs) from the four populations—one from São Paulo state, southeastern Brazil (BSP), one…

Borrelioses in Brazil: Is it time to consider tick-borne relapsing fever a neglected disease in Brazil?

Álvaro A. Faccini-Martínez; Sebastián Muñoz-Leal; Marcelo B. Labruna dkk.

Revista da Sociedade Brasileira de Medicina Tropical, Vol. 54 · 2021 · Inggris · DOAJ Scopus

Confirmación de Argas neghmei (Ixodida: Argasidae) en Perú y reporte del carpintero andino (Colaptes rupicola) como nuevo hospedero

Luis A. Gomez-Puerta; Sebastián Muñoz-Leal; Marcelo B. Labruna dkk.

Revista Peruana de Biología, Vol. 27 No. 4 · 2020 · Spanyol · DOAJ Scopus

Este informe describe el hallazgo de garrapatas blandas (Ixodida, Argasidae) parasitando a dos carpinteros andinos (Colaptes rupicola) provenientes del distrito de Nuñoa, provincia de Melgar en Puno, Perú (14°31’11.77"S; 70°32’15.95"W; 3967 m de altitud). Un total de 29 larvas de garrapatas fueron…

A Novel Genospecies of Borrelia burgdorferi Sensu Lato Associated with Cricetid Rodents in Brazil

Bárbara C. Weck; Maria Carolina A. Serpa; Marcelo B. Labruna dkk.

Microorganisms, Vol. 10 No. 2 · 2022 · Inggris · DOAJ Scopus

Borrelia burgdorferi sensu lato (Bbsl) spirochetes thrive in sylvatic transmission cycles infecting vertebrates and their ticks. Rodents and ticks of the genus Ixodes are important hosts of these spirochetes globally. Although evidence suggests that Borrelia burgdorferi sensu stricto does not exist…

ISOLATION OF Rickettsia bellii FROM Amblyomma ovale AND Amblyomma incisum TICKS FROM SOUTHERN BRAZIL

Richard Pacheco; Simone Rosa; Leonardo Richtzenhain dkk.

Revista Mvz Cordoba, Vol. 13 No. 2 · 2008 · Spanyol · DOAJ Scopus

Objective. To isolate and characterize rickettsiae from the ticks Amblyomma ovale and Amblyomma incisum collected in the state of São Paulo. Materials and methods. Adult, free-living A. ovale and A. incisum were collected in an Atlantic rainforest area in the state of São Paulo, Brazil. Each tick…

Serological evidence of Rickettsia parkeri as the etiological agent of rickettsiosis in Uruguay Evidência sorológica de Rickettsia parkeri como agente etiológico de rickettsiose no Uruguai

Ismael A. Conti-Díaz; Jonas Moraes-Filho; Richard C. Pacheco dkk.

Revista do Instituto de Medicina Tropical de São Paulo, Vol. 51 No. 6 · 2009 · Inggris · DOAJ Scopus

We report three new rickettsiosis human cases in Uruguay. The three clinical cases presented clinical manifestations similar to previous reported cases of Rickettsia parkeri in the United States; that is mild fever (< 40 ºC), malaise, headache, rash, inoculation eschar at the tick bite site…