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Louping ill in goats, Spain, 2011.

Ana Balseiro1, Luis J Royo, Claudia Pérez Martínez

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A new strain of louping ill virus was identified in Spanish goats during a 2011 outbreak. This finding highlights the need for enhanced surveillance to protect animal and human health.

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Area of Science:

  • Veterinary Virology
  • Epidemiology
  • Pathology

Background:

  • Louping ill virus (LIV) primarily affects sheep populations.
  • An unusual outbreak of louping ill occurred in goats in northern Spain in 2011.

Purpose of the Study:

  • To investigate the cause of the louping ill outbreak in Spanish goats.
  • To characterize the louping ill virus strain involved in the outbreak.

Main Methods:

  • Histopathologic examination of affected goats.
  • Molecular genetic analysis of the isolated virus.
  • Comparison of the Spanish strain with known LIV strains.

Main Results:

  • Histopathology revealed lesions consistent with louping ill.
  • Molecular analysis identified a novel LIV strain.
  • The new strain showed 94% genetic identity to a British LIV strain.

Conclusions:

  • A distinct strain of louping ill virus was responsible for the 2011 Spanish goat outbreak.
  • This discovery underscores the potential for viral evolution and geographic spread.
  • Increased surveillance is crucial for managing risks to livestock, wildlife, and human populations.