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Serological and molecular detection of Theileria equi in sport horses of northeastern Brazil

2016; Elsevier BV; Volume: 47; Linguagem: Inglês

10.1016/j.cimid.2016.06.004

1878-1667

Edlainne P. Ferreira, Odilon Vidotto, Jonatas Campos de Almeida, L.P.S. Ribeiro, Marcos V. Borges, Walter Henrique Cruz Pequeno, Danilo Tancler Stipp, Celso José Bruno de Oliveira, Alexander Welker Biondo, Thállitha Samih Wischral Jayme Vieira, Rafael Felipe da Costa Vieira,

Vector-Borne Animal Diseases

Theileriosis is a worldwide protozoal tick-borne disease caused by Theileria equi, which may produce a variety of clinical signs and turn infected horses into lifetime carriers. This study has aimed to perform a serological and molecular detection of T. equi and associated factors in sports horses from six areas of northeastern Brazil. In overall, 59.6% horses were positive by indirect immunofluorescence assay and 50.4% by polymerase chain reaction. No significant association was found when presence of ticks, age, gender, anemia or total plasma proteins was analyzed with seropositivity and molecular techniques. Although a significant association of infection was found in two cities. Thus, local risk factors other than presence of ticks, horse age, gender, anemia and total plasmatic proteins may dictate prevalence of T. equi infection in sports horses, even in highly endemic areas with no control of infection prior to horse competitions.