Risk factor evaluation and spatial distribution analysis for urban dogs serum reactive to Leptospira spp

  • Welligton Borges da Silva Universidade Estadual Paulista, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Saúde Animal, Saúde Pública Veterinária e Segurança Alimentar, Botucatu, SP
  • Ligia Barroso Simões Universidade Estadual Paulista, Instituto de Biociências, Departamento de Microbiologia e Imunologia, Botucatu, SP
  • Ana Lúcia Scarelli Lopes Universidade Estadual Paulista, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Saúde Animal, Saúde Pública Veterinária e Segurança Alimentar, Botucatu, SP
  • Carlos Roberto Padovani Universidade Estadual Paulista, Instituto de Biociências, Departamento de Bioestatística, Botucatu, SP
  • Hélio Langoni Universidade Estadual Paulista, Departamento de Higiene Veterinária e Saúde Pública, Botucatu, SP
  • José Rafael Modolo Universidade Estadual Paulista, Departamento de Higiene Veterinária e Saúde Pública, Botucatu, SP
Keywords: Leptospirose, Dogs, Risk factors

Abstract

We aimed to evaluate the risk factor of serum reactive dogs to antileptospire agglutinin and their spatial distribution in an urban area. We collected 1,000 blood samples from dogs at 20 immunization centers, homogeneously distributed in the urban area (32 km²) of Botucatu, Sao Paulo, Brazil. Diagnosis was made by microscopic serum agglutination using 24 serovars of Leptospira spp. Statistical analysis was performed by Goodman's test with 5% of significance. Spatial clusters were tested by spatial scan statistic using SaTScan. We found that 17.9% dogs reacted to Leptospira spp. (p<0.0001). Dogs with street access (22.14%) were more reactive (p<0.05) than those without (14.83%). The scan test indicated only one significant cluster influenced by age. Incorporating each one of the co-variables gender, breed, and street access to age, we found that street access was the most important. Street access and age were the most important risk factors in the large number of reactive animals in the cluster, with the castellonis serovar being the most reactive in urban dogs. The identification of a cluster with more reactive dogs than expected allows local preventive measures to be taken.

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Published
2006-12-01
How to Cite
Silva, W., Simões, L., Lopes, A., Padovani, C., Langoni, H., & Modolo, J. (2006). Risk factor evaluation and spatial distribution analysis for urban dogs serum reactive to Leptospira spp. Brazilian Journal of Veterinary Research and Animal Science, 43(6), 783-792. https://doi.org/10.11606/issn.1678-4456.bjvras.2006.26557
Section
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