Rickettsiae of the Spotted Fever group in dogs, horses and ticks: an epidemiological study in an endemic region of the State of Rio de Janeiro, Brazil

dc.creatorCunha, Nathalie Costa da
dc.creatorLemos, Elba R.S. de
dc.creatorTozental, Tatiana
dc.creatorTeixeira, Rafaella Câmara
dc.creatorCordeiro, Matheus Dias
dc.creatorLisbôa, Raquel Silva
dc.creatorFavacho, Alexsandra Rodrigues
dc.creatorBarreira, Jairo Dias
dc.creatorRezende, Jania de
dc.creatorFonseca, Adivaldo Henrique da
dc.date2015-10-13T14:15:27Z
dc.date2015-10-13T14:15:27Z
dc.date2014
dc.date.accessioned2023-09-26T20:19:05Z
dc.date.available2023-09-26T20:19:05Z
dc.identifierCUNHA, Nathalie Costa da; et al. Rickettsiae of the Spotted Fever group in dogs, horses and ticks: an epidemiological study in an endemic region of the State of Rio de Janeiro, Brazil. Rev. Bras. Med. Vet., v.36, n.3, p.294-300, jul/ 2014.
dc.identifier1413-0130
dc.identifierhttps://www.arca.fiocruz.br/handle/icict/11937
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8854090
dc.descriptionSpotted fever is a disease of which Rickettsia rickettsii is the most pathogenic agent. Its transmission is by tick bites and the infected ticks can act as vectors, reservoirs or amplifiers. The purpose of this paper is to assess the potential of dogs and horses as sentinels for brazilian spotted fever (BSF) emergence and become acquainted with the tick species in a municipal region of Resende, Rio de Janeiro State, Brazil, where five BSF cases in man were registered. Dog and horse blood samples were collected from rural and periurban properties to assess IgG anti-Rickettsia rickettsii, using the indirect immunofluorescence assay (IFA). First, an analysis was conducted to detect association between IFA results and answers obtained from a questionnaire. Afterwards, a multivariate investigation was undertaken that presented significant statistical differences. Ticks were collected directly from dogs and horses for taxonomic identification. Out of the 107 canine serum samples, 30 (28.0%) were reactive, with titers varying from 1:64 to 1:4096, and 77 (72.0%) were not reactive. Of 96 animals in the serum analysis of horses, 9 (9.4%) were reactive, all with titers of 1:64, and 87 (90.6%) were non-reactive. The tick species collected from dogs were Rhipicephalus sanguineus, Amblyomma sculptum, Amblyomma aureolatum, Amblyomma ovale, Rhipicephalus microplus and nymphs of Amblyomma sp., R. sanguineus and R. microplus. Adult ticks gathered from horses were A. cajennense, R. microplus and Dermacentor nitens, in addition to nymphs of Amblyomma sp., R. microplus and D. nitens. The results suggest that: (i) the habit of dogs entering forests and living in rural environments positively influenced the presence of anti- -rickettsiae of the spotted fever group serum antibodies, (ii) horses were not good sentinels for this study area and (iii) R. sanguineus as well as A. cajennense ticks were the most prevalent ixodidae fauna of the region.
dc.formatapplication/pdf
dc.languagepor
dc.publisherUniversidade Federal Fluminense
dc.rightsopen access
dc.subjectRio de Janeiro
dc.subjectBrazilian Spotted Fever
dc.subjectRickettsia rickettsii
dc.subjectTicks
dc.subjectSentinel
dc.subjectEpidemiology
dc.subjectRickettsia rickettsii
dc.subjectCarrapatos
dc.subjectEpidemiologia
dc.subjectCães
dc.subjectCavalos
dc.titleRickettsiae of the Spotted Fever group in dogs, horses and ticks: an epidemiological study in an endemic region of the State of Rio de Janeiro, Brazil
dc.typeArticle


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