All equines should be vaccinated according to risk. The organism which causes tetanus, Clostridium tetani, lives in the soil, and is rife in some areas. No big deal. Documentation should consist of one of the following methods mentioned below. For horse owners in Atlantic Canada, where there have been nine positive tests, both Valli and Dr. Researchers at the University of Wisconsin have developed an effective DNA vaccine for equine influenza, and ongoing research is aimed at making it even more effective. There are two diseases which are endemic in Virginia and should be a part of any vaccination program.
In the case of a horse that is unable to receive either of the vaccinations due to a history of adverse reactions, the exhibitor, upon request by Competition Management, must provide a letter from the veterinarian on official letterhead stating that the horse in question cannot be vaccinated due to medical concerns and a log of temperatures taken twice daily for the seven days prior to entering the competition grounds. Yearly vaccinations are recommended, and mosquito control is important. The log of temperatures should be provided to the Competition Management, steward, or technical delegate when requested. This study doesn’t absolutely rule out EHV-1 as a cause a headshaking, since it still could be one of many potential causes that is involved in only a minority of cases. Equine herpes virus occurs when infected horses come into direct or indirect (through people, equipment or vehicles) contact with healthy horses.