Eco-epidemiological analysis of Rickettsia parkeri in domestic dogs and Amblyomma ovale ticks in the Atlantic rainforest of Northeast Brazil

Abstract In Brazil, spotted fever (SF) is caused by two species of Rickettsia, both of which are transmitted by Amblyomma ticks: Rickettsia rickettsii, which results in severe and often fatal cases, and Rickettsia parkeri, which causes a mild illness. This study focused on R. parkeri in Amblyomma ov...

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Main Authors: Michellin Pereira de Albuquerque, Mauricio Claudio Horta, Daniele Rosa Xavier de Melo, Gabriela Akemi Cardoso Gagliardi Takeda, Ana Isabel Arraes-Santos, Thiago Fernandes Martins, Adriano Pinter
Format: Article
Language:English
Published: Colégio Brasileiro de Parasitologia Veterinaria 2024-12-01
Series:Revista Brasileira de Parasitologia Veterinária
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Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-29612024000400406&lng=en&tlng=en
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author Michellin Pereira de Albuquerque
Mauricio Claudio Horta
Daniele Rosa Xavier de Melo
Gabriela Akemi Cardoso Gagliardi Takeda
Ana Isabel Arraes-Santos
Thiago Fernandes Martins
Adriano Pinter
author_facet Michellin Pereira de Albuquerque
Mauricio Claudio Horta
Daniele Rosa Xavier de Melo
Gabriela Akemi Cardoso Gagliardi Takeda
Ana Isabel Arraes-Santos
Thiago Fernandes Martins
Adriano Pinter
author_sort Michellin Pereira de Albuquerque
collection DOAJ
description Abstract In Brazil, spotted fever (SF) is caused by two species of Rickettsia, both of which are transmitted by Amblyomma ticks: Rickettsia rickettsii, which results in severe and often fatal cases, and Rickettsia parkeri, which causes a mild illness. This study focused on R. parkeri in Amblyomma ovale ticks from the Maciço de Baturité region, Ceará, Northeast Brazil, an area endemic for SF with mild symptoms. We examined 60 domestic dogs with access to the forest for ticks and Rickettsia seroprevalence. A landscape analysis was conducted in all forest patches within 2–10 km from the main forest edge. In total, 125 A. ovale ticks were collected from 30 dogs (50%). DNA from 65 ticks was tested using genus-specific Rickettsia primers. Three (4.6%) tick specimens tested positive for R. parkeri while the Rickettsia seroprevalence among the dogs was 55% (33/60). A probable occurrence of Rickettsia transmission was observed in the fragmented Atlantic rainforest, which has 1,019 ha of preserved land and 50.6 km of perimeter border. The land's characteristics allow for semi-domiciled dogs to access forest fragments, where A. ovale ticks are commonly present. Infected ticks may parasitize the dogs, which then transport the ticks into homes, potentially transmitting SF-causing bacteria to humans.
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publisher Colégio Brasileiro de Parasitologia Veterinaria
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spelling doaj-art-2e168e3b7a714bbcb90147f18266a3fe2024-12-17T08:01:59ZengColégio Brasileiro de Parasitologia VeterinariaRevista Brasileira de Parasitologia Veterinária1984-29612024-12-0133410.1590/s1984-29612024077Eco-epidemiological analysis of Rickettsia parkeri in domestic dogs and Amblyomma ovale ticks in the Atlantic rainforest of Northeast BrazilMichellin Pereira de Albuquerquehttps://orcid.org/0000-0003-1676-0488Mauricio Claudio Hortahttps://orcid.org/0000-0003-3834-8398Daniele Rosa Xavier de Melohttps://orcid.org/0000-0003-0398-7667Gabriela Akemi Cardoso Gagliardi Takedahttps://orcid.org/0000-0002-7674-997XAna Isabel Arraes-Santoshttps://orcid.org/0000-0001-9320-7753Thiago Fernandes Martinshttps://orcid.org/0000-0002-7325-3362Adriano Pinterhttps://orcid.org/0000-0003-4596-3268Abstract In Brazil, spotted fever (SF) is caused by two species of Rickettsia, both of which are transmitted by Amblyomma ticks: Rickettsia rickettsii, which results in severe and often fatal cases, and Rickettsia parkeri, which causes a mild illness. This study focused on R. parkeri in Amblyomma ovale ticks from the Maciço de Baturité region, Ceará, Northeast Brazil, an area endemic for SF with mild symptoms. We examined 60 domestic dogs with access to the forest for ticks and Rickettsia seroprevalence. A landscape analysis was conducted in all forest patches within 2–10 km from the main forest edge. In total, 125 A. ovale ticks were collected from 30 dogs (50%). DNA from 65 ticks was tested using genus-specific Rickettsia primers. Three (4.6%) tick specimens tested positive for R. parkeri while the Rickettsia seroprevalence among the dogs was 55% (33/60). A probable occurrence of Rickettsia transmission was observed in the fragmented Atlantic rainforest, which has 1,019 ha of preserved land and 50.6 km of perimeter border. The land's characteristics allow for semi-domiciled dogs to access forest fragments, where A. ovale ticks are commonly present. Infected ticks may parasitize the dogs, which then transport the ticks into homes, potentially transmitting SF-causing bacteria to humans.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-29612024000400406&lng=en&tlng=enEco-epidemiologypublic healthserosurveyspotted fevertick-borne diseases
spellingShingle Michellin Pereira de Albuquerque
Mauricio Claudio Horta
Daniele Rosa Xavier de Melo
Gabriela Akemi Cardoso Gagliardi Takeda
Ana Isabel Arraes-Santos
Thiago Fernandes Martins
Adriano Pinter
Eco-epidemiological analysis of Rickettsia parkeri in domestic dogs and Amblyomma ovale ticks in the Atlantic rainforest of Northeast Brazil
Revista Brasileira de Parasitologia Veterinária
Eco-epidemiology
public health
serosurvey
spotted fever
tick-borne diseases
title Eco-epidemiological analysis of Rickettsia parkeri in domestic dogs and Amblyomma ovale ticks in the Atlantic rainforest of Northeast Brazil
title_full Eco-epidemiological analysis of Rickettsia parkeri in domestic dogs and Amblyomma ovale ticks in the Atlantic rainforest of Northeast Brazil
title_fullStr Eco-epidemiological analysis of Rickettsia parkeri in domestic dogs and Amblyomma ovale ticks in the Atlantic rainforest of Northeast Brazil
title_full_unstemmed Eco-epidemiological analysis of Rickettsia parkeri in domestic dogs and Amblyomma ovale ticks in the Atlantic rainforest of Northeast Brazil
title_short Eco-epidemiological analysis of Rickettsia parkeri in domestic dogs and Amblyomma ovale ticks in the Atlantic rainforest of Northeast Brazil
title_sort eco epidemiological analysis of rickettsia parkeri in domestic dogs and amblyomma ovale ticks in the atlantic rainforest of northeast brazil
topic Eco-epidemiology
public health
serosurvey
spotted fever
tick-borne diseases
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-29612024000400406&lng=en&tlng=en
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