Vaccine | Timing |
---|---|
Core vaccines recommended for all horses | |
Tetanus | 4 to 6 weeks before foaling |
West Nile virus | 4 to 6 weeks before foaling |
Eastern and Western equine encephalomyelitis | 4 to 6 weeks before foaling |
Rabies | 4 to 6 weeks before foaling |
Optional vaccines, depending on local risk | |
Equine influenza | 4 to 6 weeks before foaling |
Equine herpesvirus (EHV, rhinopneumonitis) | 5, 7, and 9 months of pregnancy using an inactivated EHV-1 vaccine licensed for prevention of abortion; some veterinarians recommend also vaccinating at 3 months of pregnancy |
Botulism | 4 to 6 weeks before foaling in geographic regions where botulism causes disease |
Equine viral arteritis (EVA) | Serology to check for antiviral antibodies should be done before vaccination; pregnant mares should not be vaccinated; if serology is negative, mares should be vaccinated before breeding to a positive stallion that is shedding the virus; mares must be isolated from other horses for 3 weeks after initial vaccination; positive titers may cause problems if the mare is to be shipped internationally |
Rotaviral diarrhea | 8, 9, 10 months of pregnancy; for all mares, regardless of vaccination history, in high-volume breeding programs |
Potomac horse fever (equine monocytic ehrlichiosis) | 4 to 6 weeks before foaling |
*Recommendations are for previously vaccinated mares. A different schedule is required if a mare is unvaccinated or vaccination history is unknown. |