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Procedures for Identifying Infectious Prions After Passage Through the Digestive System of an Avian Species
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Cattle movement as a risk factor for epidemics.

M Hässig1, A B Meier1, U Braun1

  • 1Department for Farm Animals, Vetsuisse Faculty, University of Zurich

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|January 13, 2016
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Summary
This summary is machine-generated.

Cattle movements in Switzerland are extensive, with millions of potential infectious agent transfers annually. Despite high traffic, the risk of an epidemic starting from a single infectious agent is very low due to infrequent immediate onward movement.

Keywords:
bovineepidemicscattle movementincubation period

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Area of Science:

  • Veterinary Epidemiology
  • Animal Health Surveillance
  • Disease Transmission Dynamics

Background:

  • Cattle movement is a primary risk factor for epidemic outbreaks in livestock.
  • Switzerland mandates reporting of all cattle movements in the national database (Tierverkehrsdatenbank, TVD).

Purpose of the Study:

  • To analyze Swiss cattle movement data to understand geographical distribution and disease spread potential.
  • To assess the risk of epizootic disease transmission based on movement patterns and incubation periods.

Main Methods:

  • Utilized the Swiss cattle movement database (TVD) for data from January 2011 to January 2012.
  • Analyzed the geographical distribution of 786,462 cattle movements.
  • Calculated potential infectious agent transfers based on movement data and disease incubation periods.

Main Results:

  • Observed significant seasonal variation in cattle movements, with higher numbers in summer due to alpine pasture rotations.
  • Identified substantial regional differences in movement patterns.
  • Found that while millions of transfers are possible within incubation periods for diseases like Lumpy Skin Disease and Foot and Mouth Disease, 91.4% of cattle are not moved on the first day after arrival, limiting immediate spread.

Conclusions:

  • Switzerland experiences high cattle traffic, indicating a robust national animal movement network.
  • The low probability of immediate onward cattle movement following an arrival significantly mitigates the risk of infectious agents initiating an epidemic.
  • Data supports the effectiveness of current surveillance and movement controls in preventing widespread disease outbreaks.