In order to compete at registered events, competition horses need to have their annual vaccinations, which need to be administered and documented on your horse’s passport by a veterinarian. In South Africa, these vaccinations include the African Horse Sickness (AHS) vaccination, and the Equine Influenza vaccine. Some of us may still be uncertain as to when it is safe to vaccinate, what vaccinations should be used for AHS, as well as what precautions can be taken during the anticipated AHS outbreak season.