African Horse Sickness, or AHS, is a phrase that every horse owner, trainer and exporter fears the most in South Africa and other African countries. It is a fatal disease that affects all breeds of horses, donkeys and mules, and has a very low recovery rate. The disease is not contagious and cannot be spread directly from one horse to another, but is spread by midges that carry the infection after biting an infected horse. Steps to prevent the spread of the disease have been put in place, and infected animals are isolated so as to save others from running the risk of getting African Horse Sickness.

