Vaccinations
Springtime will be here before you know it and it is time to start thinking about updating your horse’s vaccinations. Vaccines are critical to preventing the spread of dangerous diseases. Through their use, many previously fatal diseases are almost nonexistent. Vaccinations work by injecting a killed or altered form of the disease causing organism into the body. This causes the body to work to determine the best antibodies to use in an attack against the pathogen. Because the organism is killed or altered, it is nonfunctional and does not cause disease, but the immune system remembers the best strategy for destroying the pathogen. The next time the horse comes in contact with the disease causing organism, his immune system immediately knows how to fight it and he does not become ill. Occasionally, a vaccination can produce local swelling, soreness or rarely, allergic response. The following table outlines which vaccines your horse requires based on their age and exposure.

| Vaccine | Yearlings | Performance |
Pleasure | Brood Mares | Comments |
| Tetanus | Annual | Annual | Annual | 4-6 weeks prepartum | Booster required after penetrating injury. |
| EEE, WEE | Annual | Annual | Annual | 4-6 weeks prepartum | |
| Rhinopneumonitis | Optional | Semi-Annually | Optional | 5th, 7th and 9th month of gestation. |
|
| Influenza | Optional | Semi-Annualy | Optional | 4-6 weeks prepartum | |
| Rabies | Annual | Annual | Annual | 4-6 weeks prepartum | |
| Potomac | Annual | Annual | Annual | 4-6 weeks prepartum | Booster during May/June |
| West Nile | Annual | Annual | Annual | 4-6 weeks prepartum |
Please note: advice given as a guide only and specific advice may vary for individual horses. OES does not accept responsibility for any problems resulting from inappropriate interpretation of advice. If you have any doubt about your horse's health, always consult a vet.
