Fator de risco
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Pesq. Vet. Bras. 30(5):398-402, maio 2010Fatores de risco para a leptospirose em fêmeas bovinas em idade reprodutiva no Estado da Bahia, Nordeste do Brasil1
Flávia C.S. Oliveira2, Sérgio S. Azevedo3, Sônia R. Pinheiro2, Carolina S.A.Batista2, Zenaide M. Moraes2, Gisele O. Souza2, Amane P. Gonçales2 e Sílvio A. Vasconcellos2*
ABSTRACT.- Oliveira F.C.S., Azevedo S.S., Pinheiro S.R., Batista C.S.A., Moraes Z.M, Souza G.O., Gonçales A.P. & Vasconcellos S.A. 2010. [Risk factors associated with leptospirosis in cows in the state of Bahia, northeastern Brazil.] Fatores de risco para a leptospirose em fêmeas bovinas em idade reprodutiva no Estado da Bahia, Nordeste do Brasil. Pesquisa Veterinária Brasileira 30(5):398-402. Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Avenida Prof. Dr. Orlando Marques de Paiva 87, São Paulo, SP 05508-270, Brazil. E-mail: savasco@usp.br Risk factors associated with leptospirosis were identified in cows in the state of Bahia, northeastern Brazil. A total of 10,823 cows with > 24 months of age from 1,414 herds were randomly sampled. For the serological diagnosis of Leptospira spp. infection, the microscopic agglutination test (MAT) was carried out using 24 serovars as antigens. A herd was considered positive when presented at least one seropositive animal. Of the 1,414 investigated herds, 1,076 (77.9%; 95% CI = 75.7-80.0%) presented at least one reactant animal at MAT to any serovar. Serovar Hardjo (Hardjoprajitno) was the most prevalent, with 34.49% (95% CI = 31.97-37.14%) of the positive herds. Presence of more than 28 bovine females in reproductive age (OR=2.11;