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Serological evidence of Rickettsia in horses from a semi-arid Brazilian region.
- Source :
-
Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria [Rev Bras Parasitol Vet] 2021 Apr 02; Vol. 30 (1), pp. e026220. Date of Electronic Publication: 2021 Apr 02 (Print Publication: 2021). - Publication Year :
- 2021
-
Abstract
- Brazilian spotted fever (BSF) is a common tick-borne disease caused by Rickettsia rickettsii. Horses are the primary hosts of the main vector, Amblyomma sculptum, and are considered efficient sentinels for circulation of Rickettsia. Therefore, the aim of this study was to detect antibodies reactive to R. rickettsii antigens in horses from a non-endemic area in the north-central region of Bahia state, Brazil. Blood samples and ticks were collected from 70 horses from the municipalities of Senhor do Bonfim, Antônio Gonçalves, Pindobaçu, and Campo Formoso. The sera obtained were tested by an indirect immunofluorescence assay to detect anti-Rickettsia antibodies. Overall, 5.7% (4/70) of the horses reacted to R. rickettsii antigens. Ticks were collected from 18.6% (13/70) of the horses and were identified as A. sculptum and Dermacentor nitens. Despite being a non-endemic area, seropositive animals were identified in our study, suggesting circulation of rickettsial agents in the region. This is the first serological survey of this agent in horses from the north-central region of Bahia, and further studies are needed to understand the epidemiology of BSF in these locations.
- Subjects :
- Animals
Brazil epidemiology
Fluorescent Antibody Technique
Horse Diseases epidemiology
Horse Diseases microbiology
Rocky Mountain Spotted Fever diagnosis
Rocky Mountain Spotted Fever epidemiology
Horse Diseases diagnosis
Horses microbiology
Rickettsia rickettsii
Rocky Mountain Spotted Fever veterinary
Ticks classification
Ticks microbiology
Subjects
Details
- Language :
- English
- ISSN :
- 1984-2961
- Volume :
- 30
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria
- Publication Type :
- Academic Journal
- Accession number :
- 33825800
- Full Text :
- https://doi.org/10.1590/S1984-29612021011