Systematic Veterinary Virology

INTRODUCTION

• Equine influenza is an acute, contagious respiratory disease caused by two distinct subtypes (H₇N₇ - formerly equi-1, and H₃N₈ - formerly equi-2) of influenza A viruses within the genus Influenzavirus A of the family Orthomyxoviridae.
• The infection in horses are chracterised by pyrexia, and a harsh dry cough followed by a mucopurulent nasal discharge.

Synonyms

• Horse flu, Epizootic Cellulitis, Pinkeye, Stable Pneumonia, Shipping Fever.