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Epidemiological and molecular identification of Trypanosoma vivax diagnosed in cattle during outbreaks in central Brazil.
Bastos, Thiago Souza Azeredo; Faria, Adriana Marques; Couto, Luiz Fellipe Monteiro; Nicaretta, João Eduardo; Cavalcante, Alliny Souza de Assis; Zapa, Dina Maria Beltrán; Ferreira, Lorena Lopes; Heller, Luciana Maffini; Madrid, Darling Mélany de Carvalho; Cruvinel, Leonardo Bueno; Rossi, Gabriel Augusto Marques; Soares, Vando Edésio; Cadioli, Fabiano Antônio; Lopes, Welber Daniel Zanetti.
Afiliación
  • Bastos TSA; Centro de Parasitologia Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás - UFG, Goiânia, GO, Brazil.
  • Faria AM; Centro de Parasitologia Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás - UFG, Goiânia, GO, Brazil.
  • Couto LFM; Centro de Parasitologia Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás - UFG, Goiânia, GO, Brazil.
  • Nicaretta JE; Centro de Parasitologia Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás - UFG, Goiânia, GO, Brazil.
  • Cavalcante ASA; Centro de Parasitologia Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás - UFG, Goiânia, GO, Brazil.
  • Zapa DMB; Centro de Parasitologia Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás - UFG, Goiânia, GO, Brazil.
  • Ferreira LL; Departamento de Medicina Veterinária Preventiva, Escola de Veterinária, Universidade Federal de Minas Gerais - UFMG, Belo Horizonte, MG, Brazil.
  • Heller LM; Centro de Parasitologia Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás - UFG, Goiânia, GO, Brazil.
  • Madrid DMC; Centro de Parasitologia Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás - UFG, Goiânia, GO, Brazil.
  • Cruvinel LB; Centro de Parasitologia Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás - UFG, Goiânia, GO, Brazil.
  • Rossi GAM; Centro Universitário Central Paulista (UNICEP) - Rua Miguel Petroni n.5111, São Carlos, São Paulo, Brazil.
  • Soares VE; Universidade Brasil - Campus de Descalvado, Descalvado, SP, Brazil.
  • Cadioli FA; Departamento de Clínica, Cirurgia e Reprodução Animal, Faculdade de Medicina Veterinária, Universidade Estadual Paulista - Unesp, Araçatuba, SP, Brazil.
  • Lopes WDZ; Centro de Parasitologia Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás - UFG, Goiânia, GO, Brazil.
Parasitology ; 147(12): 1313-1319, 2020 10.
Article en En | MEDLINE | ID: mdl-32624014
Bovine trypanosomosis has been spreading in Brazil. In the present study, we evaluated the spatial distribution, prevalence and risk factors of this disease in the state of Goiás, Brazil, and performed both molecular and phylogenetical analyses of Trypanosoma vivax. A total of 4049 blood samples were collected from cattle for a period of 2 years. The parasitological diagnosis was performed using the Woo method and a questionnaire was administered to the farmers to document risk factors associated with the disease in the herd. Positive samples were DNA sequenced and compared to GenBank codes. The prevalence of T. vivax was 8.84%, occurring on 24 ranches only in dairy cattle and mainly in the central and southern portions of the state. The acquisition of new animals infected with T. vivax and the administration of exogenous oxytocin to cows using the same syringe and needle were the main associated factors (P ≤ 0.05). After an outbreak, milk production decreased by 39.62%. The presence of biting flies (tabanids, Haematobia irritans and Stomoxys calcitrans) was not a risk factor (P > 0.05) for the occurrence of T. vivax. The epidemiological data demonstrate the importance of restricting the practice of auctions as well as eliminating the use of exogenous oxytocin in animals during milking. The samples tested by polymerase chain reaction were positive for T. vivax and were genetically homologous with T. vivax found in different states of Brazil and west Africa based on the 18S rRNA gene.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Tripanosomiasis Bovina / Trypanosoma vivax Tipo de estudio: Diagnostic_studies / Etiology_studies / Prevalence_studies / Prognostic_studies / Risk_factors_studies Límite: Animals País/Región como asunto: America do sul / Brasil Idioma: En Revista: Parasitology Año: 2020 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Tripanosomiasis Bovina / Trypanosoma vivax Tipo de estudio: Diagnostic_studies / Etiology_studies / Prevalence_studies / Prognostic_studies / Risk_factors_studies Límite: Animals País/Región como asunto: America do sul / Brasil Idioma: En Revista: Parasitology Año: 2020 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Reino Unido