A description and qualitative comparison of the elements of heterogeneous bovine viral diarrhea control programs that influence confidence of freedom

A. M. van Roon*, I. M.G.A. Santman-Berends, D. Graham, S. J. More, M. Nielen, L. van Duijn, M. Mercat, C. Fourichon, A. Madouasse, J. Gethmann, C. Sauter-Louis, J. Frössling, A. Lindberg, C. Correia-Gomes, G. J. Gunn, M. K. Henry, G. van Schaik

*Corresponding author for this work

Research output: Contribution to journalArticle

3 Downloads (Pure)

Abstract

For endemic infections in cattle that are not regulated at the European Union level, such as bovine viral diarrhea virus (BVDV), European Member States have implemented control or eradication programs (CEP) tailored to their specific situations. Different methods are used to assign infection-free status in CEP; therefore, the confidence of freedom associated with the “free” status generated by different CEP are difficult to compare, creating problems for the safe trade of cattle between territories. Safe trade would be facilitated with an output-based framework that enables a transparent and standardized comparison of confidence of freedom for CEP across herds, regions, or countries. The current paper represents the first step toward development of such a framework by seeking to describe and qualitatively compare elements of CEP that contribute to confidence of freedom. For this work, BVDV was used as a case study. We qualitatively compared heterogeneous BVDV CEP in 6 European countries: Germany, France, Ireland, the Netherlands, Sweden, and Scotland. Information about BVDV CEP that were in place in 2017 and factors influencing the risk of introduction and transmission of BVDV (the context) were collected using an existing tool, with modifications to collect information about aspects of control and context. For the 6 participating countries, we ranked all individual elements of the CEP and their contexts that could influence the probability that cattle from a herd categorized as BVDV-free are truly free from infection. Many differences in the context and design of BVDV CEP were found. As examples, CEP were either mandatory or voluntary, resulting in variation in risks from neighboring herds, and risk factors such as cattle density and the number of imported cattle varied greatly between territories. Differences were also found in both testing protocols and definitions of freedom from disease. The observed heterogeneity in both the context and CEP design will create difficulties when comparing different CEP in terms of confidence of freedom from infection. These results highlight the need for a standardized practical methodology to objectively and quantitatively determine confidence of freedom resulting from different CEP around the world.

Original languageEnglish
Pages (from-to)4654-4671
Number of pages18
JournalJournal of Dairy Science
Volume103
Issue number5
Early online date5 Mar 2020
DOIs
Publication statusPrint publication - May 2020

Keywords

  • bovine viral diarrhea virus
  • control program
  • freedom from infection
  • surveillance

Fingerprint Dive into the research topics of 'A description and qualitative comparison of the elements of heterogeneous bovine viral diarrhea control programs that influence confidence of freedom'. Together they form a unique fingerprint.

  • Profiles

    No photo of George Gunn

    George Gunn

    Person: Academic contract that is research only

    No photo of Madeleine McCutcheon

    Madeleine Henry

    Person: Academic contract that is research only

    Cite this

    van Roon, A. M., Santman-Berends, I. M. G. A., Graham, D., More, S. J., Nielen, M., van Duijn, L., Mercat, M., Fourichon, C., Madouasse, A., Gethmann, J., Sauter-Louis, C., Frössling, J., Lindberg, A., Correia-Gomes, C., Gunn, G. J., Henry, M. K., & van Schaik, G. (2020). A description and qualitative comparison of the elements of heterogeneous bovine viral diarrhea control programs that influence confidence of freedom. Journal of Dairy Science, 103(5), 4654-4671. https://doi.org/10.3168/jds.2019-16915