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Isolation of pseudorabies (Aujeszky's disease) virus from a Florida panther

C M Glass1, R G McLean, J B Katz

  • 1Florida Game and Fresh Water Fish Commission, Wildlife Research Laboratory, Gainesville 32601.

Insights

Pseudorabies virus was identified in the brain of a Florida panther. This finding confirms a wild-type, virulent strain of the virus in the endangered feline population.

Area of Science:

  • Veterinary Virology
  • Wildlife Disease Ecology
  • Conservation Medicine

Background:

  • Pseudorabies virus (PRV) poses a significant threat to wildlife populations, particularly endangered species.
  • Florida panthers (Felis concolor coryi) are a vulnerable subspecies with limited geographic range.
  • Surveillance for novel pathogens is crucial for the conservation of endangered wildlife.

Observation:

  • PRV was successfully isolated in cell culture from the brain tissue of a deceased 3.5-year-old male Florida panther.
  • The virus was not detected in other sampled tissues from the same individual.
  • Nested polymerase chain reaction (PCR) analysis was performed on the isolated virus.

Findings:

  • The isolated PRV strain exhibited a classical wild-type virulent genotype.
  • The virus was characterized as glycoprotein I-positive (gI+) and thymidine kinase-positive (TK+).
  • These genetic markers are indicative of the virulent phenotype of the PRV strain.

Implications:

  • This case highlights the potential for PRV to cause fatal disease in Florida panthers.
  • Understanding the genotype of circulating PRV strains is essential for developing effective management and mitigation strategies.
  • Continued monitoring and research are vital to protect this endangered subspecies from viral threats.

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