Whenever horses--or those stabled around them--are transported from one location to another, it presents an opportunity for the transport and proliferation of disease-causing agents. For Thoroughbreds, travel is often a regular occurrence, whether it be for competition, training, sale or breeding. Add to that the fact that many of the horses with whom they are transported, stabled or otherwise come in contact, have equally active travel schedules and it is easy to see how quickly a pathogen can potentially spread from a single horse to a group, barn or entire...