A partir dos resultados do presente estudo concluímos que os protozoários T. equi e B. caballi infectam equinos da região do pantanal mato-grossense, nos municípios de Poconé e Barra do Bugre. A infecção por T. equi apresenta-se disseminada entre as fazendas avaliadas. A presença de anticorpos anti-Ehrlichia spp. sugere a circulação entre os eqüídeos de espécies antigenicamente relacionadas, como as pertencentes aos gêneros Ehrlichia e Anaplasma, entretanto a negatividade nos exames de PCR pode indicar provável processo crônico desses agentes.
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