Ehrlichia canis and Rickettsia spp. in dogs from urban areas in Paraiba state, northeastern Brazil

Rotondano, Tereza Emmanuelle de Farias; Krawczak, Felipe da Silva; Barbosa, Werona de Oliveira; Moraes‐Filho, Jonas; Bastos, Fernanda Nieri; Labruna, Marcelo Bahia; Azevêdo, Sérgio Santos de; Melo, Márcia Almeida de; Almeida, Alzira Maria Paiva de

doi:10.1590/s1984-29612017030

Cited by 11 publications

(10 citation statements)

References 25 publications

(30 reference statements)

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“…These results contribute to determining the negative relationship between feral dogs and wild animals of REPSA regarding disease transmission. Ehrlichia canis (the causative agent of canine monocytic ehrlichiosis) is the main rickettsial agent registered in dogs of the Neotropical region, with prevalence ranging between 15 and 70% (BARRANTES-GONZÁLEZ et al, 2016;MONTENEGRO et al, 2017;ROTONDANO et al, 2017;GEIGER et al, 2018;PAULINO et al, 2018). Clinical signs of an E. canis infection can be variable, depending on the strain, the immune response of the dog, and the presence of concomitant infections with other tick or flea-borne pathogens (SAINZ et al, 2015), however, no clinical signs were observed in the animals captured.…”

Section: Discussionmentioning

confidence: 99%

Molecular detection of Bartonella, Ehrlichia and Mycoplasma in feral dogs of El Pedregal de San Angel Ecological Reserve in Mexico City

Arenas

Gil-Alarcón

Sánchez‐Montes

et al. 2019

Rev. Bras. Parasitol. Vet.

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Free-ranging and feral dogs represent a group of unattended companion animals. They impact wild animal populations by predating native species, displacing predators and introducing exotic pathogens. The aim of this work was to describe the molecular occurrence of Rickettsia, Ehrlichia, Anaplasma, Mycoplasma and Bartonella in feral dogs. The study was carried out in the last relict of a protected area in Mexico City. Blood clots samples from 19 dogs were obtained and analyzed for detection of specific fragments of the 16S-rRNA gene for Anaplasma, Ehrlichia and Mycoplasma and citrate synthase (gltA) for Bartonella and Rickettsia. Our results showed that DNA from three bacteria species (Bartonella vinsonii subsp. berkhoffii, Ehrlichia canis and Mycoplasma haemocanis) was present with frequencies ranging from 5.3 to 15.8%. This is the first record of B. vinsonii subsp. berkhoffii and M. haemocanis in dogs from México, and also the first finding of Ehrlichia canis in Mexico City. It is important to perform surveillance of feral dog populations in order to identify the impact of these pathogens on wild animal populations and Public Health in order to establish prevention and protection programs.

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Section: Discussionmentioning

confidence: 99%

Molecular detection of Bartonella, Ehrlichia and Mycoplasma in feral dogs of El Pedregal de San Angel Ecological Reserve in Mexico City

Arenas

Gil-Alarcón

Sánchez‐Montes

et al. 2019

Rev. Bras. Parasitol. Vet.

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“…Since E. canis was first detected in Algeria in 1935, it has been found in dogs and ticks in North America, Europe, Asia, and Africa. At present, CME is spreading all over the world [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Molecular detection and genetic variability of Ehrlichia canis in pet dogs in Xinjiang, China

et al. 2020

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Background and Aim: As a tick-borne zoonotic pathogen, Ehrlichia canis has already posed a threat to public health and safety. This study aimed to clarify the prevalence and molecular characteristics of E. canis in pet dogs in Xinjiang, China. Materials and Methods: A total of 297 blood samples of pet dogs and 709 skin ticks (Rhipicephalus sanguineus sensu lato) were subjected to molecular detection using PCR for E. canis 16S rRNA gene, and then, positive samples were amplified, sequenced, and phylogenetically analyzed for E. canis gp36 gene. Results: The PCR detection showed that the positive rate of PCR was 12.12% (36/297) in blood samples and 15.23% (108/709) in tick samples, respectively. Based on the phylogenetic analysis of E. canis gp36 protein, these E. canis strains in different geographical regions of the world can be divided into Genogroup I and Genogroup II. Among them, the Xinjiang epidemic strain XJ-6 and 533, 36, 1055, Kasur1, and Jake strains were clustered into subgroup 1.1 of Genogroup I, while the XJ-2, XJ-21, and XJ-35 strains and the TWN1, TWN4, CM180, and CM196 strains were closely related and belonged to subgroup 2.2 of Genogroup II, displaying high genetic diversity. Conclusion: This is the first study focusing on the molecular epidemiology of E. canis infection in pet dogs, which revealed that E. canis infection had been occurred in Xinjiang, China. More importantly, this study confirmed that the substantial variability in immunoreactive protein gp36 from E. canis strains circulating in pet dogs.

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“…The occurrence of infection by E. canis in the canine population of Vila de Jericoacoara was similar to that found in other studies conducted in the northeastern region of Brazil. Rotondano et al (2017) found the molecular occurrence of E. canis 8.9% among dogs in an urban area in the state of Paraíba. In this region of Brazil, the molecular ocurrence of E. canis infection has ranged from 1.7% to 25% (Tanikawa et al, 2013;Costa et al, 2015;Rotondano et al, 2015Rotondano et al, , 2017Dantas-Torres et al, 2018).…”

Section: Discussionmentioning

confidence: 88%

“…antibodies. Although these pathogens had previously been reported infecting dogs in other states in Brazil (Saito et al, 2008;Ramos et al, 2010;Spolidorio et al, 2011;Vieira et al, 2011;Costa et al, 2015; Tick-borne pathogens in dogs in Ceará, Brazil Miranda et al, 2014;Rotondano et al, 2015Rotondano et al, , 2017Lopes et al, 2019;Oliveira et al, 2020), data relating to Ceará were very scarce, and were mainly from the coastal region. Recently, R. rickettsii, R. amblyommatis and E. canis were reported infecting dogs in the National Forest (FLONA) of Araripe-Apodi, in the municipality of Crato, state of Ceará (Oliveira et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

Occurrence of tick-borne pathogens in dogs in a coastal region of the state of Ceará, northeastern Brazil

Fonsêca

Oliveira

Jorge

et al. 2022

Rev. Bras. Parasitol. Vet.

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The aim of this study was to determine the occurrence of tick-borne pathogens (Ehrlichia canis, Babesia vogeli, Hepatozoon spp. and Rickettsia spp.) in dogs in Vila de Jericoacoara, coastal region of Ceará, Brazil. Blood samples were collected from 153 animals and analyzed using molecular and serological methods. Sixty animals were found to be infected or exposed to at least one of the pathogens studied. Babesia vogeli was the most prevalent pathogen (15%), followed by E. canis (13.7%) and Hepatozoon spp. (11.8%), which was identified as Hepatozoon canis through sequencing. Twenty dogs (13%) were seroreactive to Rickettsia spp. Rhipicephalus sanguineus sensu lato was observed on 11.8% of the animals. There were associations between age (< 3 years old) and positivity for B. vogeli, and between habitation (stray dogs) and positivity for H. canis. There were also associations between anemia and infection with H. canis, and between leukopenia and exposure to Rickettsia spp. No association was detected between clinical alterations and infection with or exposure to the pathogens studied. The results confirmed that pathogens of veterinary importance are circulating in northeastern Brazil and showed that dogs are exposed to Rickettsia species with zoonotic potential, thus indicating a need for vector control measures.

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Ehrlichia canis and Rickettsia spp. in dogs from urban areas in Paraiba state, northeastern Brazil

Cited by 11 publications

References 25 publications

Molecular detection of Bartonella, Ehrlichia and Mycoplasma in feral dogs of El Pedregal de San Angel Ecological Reserve in Mexico City

Molecular detection of Bartonella, Ehrlichia and Mycoplasma in feral dogs of El Pedregal de San Angel Ecological Reserve in Mexico City

Molecular detection and genetic variability of Ehrlichia canis in pet dogs in Xinjiang, China

Occurrence of tick-borne pathogens in dogs in a coastal region of the state of Ceará, northeastern Brazil

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