A nasty bout of horse herpes forced vets to euthanize one equine and postpone a number of races at Calder Race Course in Miami this coming weekend.
Dozens of horses in three barns have been placed under quarantine at Calder after the unidentified horse was diagnosed with the disease over the weekend, according to Daily Racing Form.
The horse was quickly euthanized after it tested positive Monday for the equine herpesvirus.
Races that were supposed to take place Saturday have instead been postponed, though all horses not affected will be allowed to race.
Horse herpes attacks the animal's respiratory system, and is highly contagious.
The International Polo Club in Wellington battled an outbreak of horse herpes in 2006 which claimed the lives of at least six horses.