Please use this identifier to cite or link to this item: https://www.arca.fiocruz.br/handle/icict/29504
Title: Rickettsia amblyommatis infecting Amblyomma pseudoconcolor in area of new focus of spotted fever in northeast Brazil
Authors: Silva, Arannadia Barbosa
Cardoso, Karen Medeiros
Oliveira, Stefan Vilges de
Costa, Raylene Medeiros Ferreira
Oliveira, Geane
Amorim, Marinete
Alves, Leucio Câmara
Monteiro, Maria Fernanda Melo
Gazeta, Gilberto Salles
Affilliation: Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Referência Nacional em Vetores das Riquetsioses. Rio de Janeiro, RJ. Brasil / Universidade CEUMA. Imperatriz, MA, Brasil / Faculdade Vale do Aço. Açailândia, MA, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Referência Nacional em Vetores das Riquetsioses. Rio de Janeiro, RJ. Brasil.
Ministério da Saúde. Secretaria de Vigilância em Saúde. Departamento de Vigilância das Doenças Transmissíveis. Coordenação Geral de Doenças Transmissíveis. Brasília. DF, Brasil.
Secretaria de Saúde do Estado de Pernambuco. Recife, PE, Brasil.
Secretaria de Saúde do Estado de Pernambuco. Recife, PE, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Referência Nacional em Vetores das Riquetsioses. Rio de Janeiro, RJ. Brasil.
Universidade Federal Rural de Pernambuco. Departamento de Medicina Veterinária. Recife, PE, Brasil.
Universidade Federal Rural de Pernambuco. Programa de Pós Graduação em Biociência Animal. Recife, PE, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Referência Nacional em Vetores das Riquetsioses. Rio de Janeiro, RJ. Brasil.
Abstract: In Brazil, active infections of Rickettsia spp. is confirmed in all regions, involving various species of ticks. During investigation of a new focus of Spotted Fever (SF) incidence in the state of Pernambuco, northeastern Brazil, tick species Rhipicephalus sanguineus sensu lato (Latreille), and Amblyomma pseudoconcolor were collected from one Canis familiaris and four Euphractus sexcinctus, respectively, and analized for the presence of rickettsial genes. Ten A. pseudoconcolor ticks (90.9%) were found to be infected with Rickettsia, whereas no evidence of Rickettsia spp. was found in R. sanguineus s. l. Genetic analysis based of five rickettsial genes showed that the detected strain is most closely related to Rickettsia amblyommatis (formerly Candidatus Rickettsia amblyommii). R. amblyommatis was, for the first time, detected in Amblyomma pseudoconcolor and the results pointed to this tick like a potential vector in the enzootic cycle of R. amblyommatis in a typical semiarid Brazilian savannah region. In conclusion, despite the need for further studies to confirm if R. amblyommatis was responsible for the observed case in the state of Pernambuco, the presence of this bacterium during an SF focussed investigation should be a major concern in terms of public health due the capacity of SF for rapid and extensive dispersion within Brazilian territory.
Keywords: Rickettsia amblyommatis
Amblyomma pseudoconcolor
Spotted fever
Case investigation
northeast Brazil
keywords: Rickettsia amblyommatis
Amblyomma pseudoconcolor
Investigação de caso
Febre Maculosa
Região Nordeste
DeCS: Febre Maculosa
Issue Date: 2018
Publisher: Elsevier
Citation: SILVA, Arannadia Barbosa; et al. Rickettsia amblyommatis infecting Amblyomma pseudoconcolor in area of new focus of spotted fever in northeast Brazil. Acta Tropica, v.182, p.305-308, 2018.
DOI: 10.1016/j.actatropica.2018.03.005
ISSN: 0001-706X
Copyright: restricted access
Appears in Collections:IOC - Artigos de Periódicos

Files in This Item:
File Description SizeFormat 
arannadiab_silva_etal_IOC_2018.pdf406.47 kBAdobe PDF    Request a copy


FacebookTwitterDeliciousLinkedInGoogle BookmarksBibTex Format mendeley Endnote DiggMySpace

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.