noun
equine influenza; horse flu
Veterinary term for the highly contagious respiratory disease in horses caused by influenza A virus.
競走馬の間で馬インフルエンザが流行した。
Equine influenza spread among the racehorses.
Compound of 馬 (uma, 'horse') and インフルエンザ (infuruenza, 'influenza'), a direct calque of English 'equine influenza'.