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Rev Bras Parasitol Vet. 2014 Mar;23(1):85-9.

Seroprevalence rates of antibodies against Theileria equi in team roping horses from central-western region of Paraná.

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  • 1Departamento de Medicina Veterinária, Universidade Estadual do Centro-Oeste do Paraná ? UNICENTRO, Guarapuava, PR, Brasil.
  • 2Instituto de Veterinária ? DMCV, Universidade Federal Rural do Rio de Janeiro ?UFRRJ, Seropédica, RJ, Brasil.
  • 3Médico Veterinário autônomo, Campinas, SP, Brasil.


The purpose of this study was to estimate the prevalence of Theileria equi in horses from central western region of Paraná state, Brazil. The presence of antibodies IgG against T. equi was determined in serum samples obtained from 400 team roping horses of the district of Guarapuava by the enzyme-linked immunosorbent assay (ELISA). Results showed that 242 (61%) animals were positive which demonstrates that equine piroplasmosis is widespread and therefore it might be a contributing factor for the irregular performance among athletes horses in the region studied. No association regarding age and sex were observed (p>0.05). To our knowledge, this is the first report describing a serological survey on equine piroplasmosis in the state of Paraná, Brazil.

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