Experimental reproduction of severe bluetongue in sheep

Nigel J Maclachlan, J. E. Crafford, William Vernau, Ian Gardner, A. Goddard, A. J. Guthrie, E. H. Venter

Research output: Contribution to journalArticle

55 Scopus citations

Abstract

Sheep inoculated with a virulent South African strain of bluetongue (BT) virus serotype 4 developed severe clinical signs and lesions characteristic of fulminant BT, including coronitis, hemorrhage and ulceration of the mucosal lining of the oral cavity and forestomaches, hemorrhage in the wall of the pulmonary artery, and focally extensive necrosis of skeletal muscle, especially of the neck. At necropsy, up to 14 days after infection, the infected sheep exhibited striking pulmonary edema, edema of the subcutaneous tissues and fascial planes of the head and neck, and pleural and pericardial effusion of varying severity. A reliable model for experimental reproduction of fulminant BT in sheep will facilitate future studies to better characterize the pathogenesis of this disease, particularly as it regards the mechanisms responsible for the increased vascular permeability that characterizes BT and related orbiviral diseases such as African horse sickness.

Original languageEnglish (US)
Pages (from-to)310-315
Number of pages6
JournalVeterinary Pathology
Volume45
Issue number3
DOIs
StatePublished - May 2008

Keywords

  • African horse sickness
  • Bluetongue
  • Pathogenesis
  • Sheep

ASJC Scopus subject areas

  • veterinary(all)

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