This organism will survive in soils for two to three weeks. And, it can survive in the hoof wall of some sheep for several months. The route of transmission from one sheep to another is fairly simple. The organism travels from the infected sheep to the soil and then to the non-infected sheep. This organism is usually introduced into a clean flock by the shepherd purchasing infected sheep, mixing with an infected flock, or by using a facility after an infected flock.
Humans can spread the disease on their boots.
Many farms are requiring the use of either disposable boots or rubber boots that can be disinfected. This method of transmission is often overlooked. Visitors to your farm should be required to either disinfect their boots upon arrival or wear disposable boots. Prevention Management practices that help reduce hoof damage will help reduce the incidence of foot rot. Keep the hooves of the sheep trimmed to reduce stress on the soft tissue of the foot.