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Prevalence of and risk factors for bovine respiratory syncytial virus (BRSV) infection in non-vaccinated dairy and dual-purpose cattle herds in Ecuador

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Abstract

A cross-sectional study was carried out to determine the seroprevalence and risk factors associated with bovine respiratory syncytial virus (BRSV) infection in non-vaccinated dairy and dual-purpose cattle herds from Ecuador. A total of 2,367 serum samples from 346 herds were collected from June 2008 to February 2009. A questionnaire, which included variables related to cattle, health, management measures, and the environment, was filled out in each herd. Presence of antibodies against BRSV was analyzed using a commercial indirect ELISA test. A logistic regression model was used to determine risk factors associated with BRSV at herd level. The individual seroprevalence against BRSV in non-vaccinated herds in Ecuador was 80.48% [1,905/2,367; 95% confidence interval (CI) = 78.9–82.1]. The herd prevalence was 91.3% (316/346; 95% CI = 88.3–94.3), and the intra-herd prevalence ranged between 25% and 100% (mean, 90.47%). The logistic regression model showed that the existence of bordering cattle farms, the dual-purpose farms, and the altitude of the farm (more than 2,338 m above sea level) were risk factors associated with BRSV infection. This is the first study about BRSV prevalence in Ecuador. It shows the wide spread of the BRSV infection in the country. The risk factors found will help to design effective control strategies.

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Acknowledgments

This study was supported by the Universidad Técnica Particular de Loja (UTPL), in Ecuador. We would like to thank the farmers who participated in this study.

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Authors and Affiliations

  1. Centro de Investigación, Transferencia de Tecnología, Extensión y Servicios Agropecuarios, Universidad Técnica Particular de Loja, Loja, Ecuador

    Luis Rodrigo Saa & Diego Vinicio Jara

  2. Department of Animal Health, Veterinary Faculty, University of Cordoba (UCO), Campus de Excelencia Internacional Agroalimentario, ceiA3, Edificio de Sanidad Animal, Campus de Rabanales, 14014, Córdoba, Spain

    Anselmo Perea, Antonio José Arenas, Ignacio Garcia-Bocanegra, Carmen Borge & Alfonso Carbonero

Authors
  1. Luis Rodrigo Saa
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  2. Anselmo Perea
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  3. Diego Vinicio Jara
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  4. Antonio José Arenas
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  5. Ignacio Garcia-Bocanegra
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  6. Carmen Borge
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  7. Alfonso Carbonero
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Correspondence to Alfonso Carbonero.

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Saa, L.R., Perea, A., Jara, D.V. et al. Prevalence of and risk factors for bovine respiratory syncytial virus (BRSV) infection in non-vaccinated dairy and dual-purpose cattle herds in Ecuador. Trop Anim Health Prod 44, 1423–1427 (2012). https://doi.org/10.1007/s11250-012-0082-8

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  • DOI: https://doi.org/10.1007/s11250-012-0082-8

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