| Disease | Previously vaccinated horses | Unvaccinated horses or horses with unknown history | Notes |
|---|---|---|---|
| Tetanus | Annually | 2-dose series: 2nd dose 4-6 weeks after 1st dose Annual revaccination |
Booster at time of penetrating injury or prior to surgery if last dose was administered over 6 months previously |
| Eastern/Western Equine Encephalmyelitis (EEE/WEE) | Annually, in the spring prior to the onset of the vector season | 2-dose series: 2nd dose 4 - 6 weeks after 1st dose Revaccinate prior to the onset of the next vector season |
Consider 6-month revaccination interval for horses living in endemic areas or immunocompromised horses |
| West Nile Virus (WNV) | Annually in the spring, prior to onset of vector season | Inactivated whole virus vaccine: 2-dose series: 2nd dose 4-6 weeks after 1st dose Revaccinate prior to the onset of the next vector season Recombinant canary pox vaccine: 2-dose series: 2nd dose 4-6 weeks after 1st dose Revaccinate prior to the onset of the next vector season Inactivated flavivirus chimera vaccine: 2-dose series: 2nd dose 3-4 weeks after 1st dose Revaccinate prior to the onset of the next vector season |
When using the inactivated or the recombinant product, consider 6-month revaccination interval for:
|
| Rabies | Annually | Single dose Annual revaccination |
| Disease | Previously vaccinated horses | Unvaccinated horses or horses with unknown history | Notes |
|---|---|---|---|
| Anthrax | Annually | 2-dose series: 2nd dose 3-4 weeks after 1st dose Revaccinate annually |
Do not administer while on antibiotics Use caution during storage, handling, and administration. Consult physician immediately if human exposure to vaccine occurs by accidently injection, ingestion, or otherwise through the conjunctiva or broken skin. |
| Botulism | Annually | 3-dose series: 2nd dose 4 weeks after 1st dose. 3rd dose 4 weeks after 2nd dose Revaccinate annually |
|
| Equine Herpesvirus (EHV) | Annually | 3-dose series: 2nd dose 4-6 weeks after 1st dose. 3rd dose 4-6 weeks after 2nd dose Revaccinate annually |
Consider 6-month revaccination interval for:
|
| Equine Viral Arteritis (EVA) | Annually Stallions and teasers: Vaccinate 2-4 weeks before breeding season. Mares: Vaccinate when open. |
Single dose | Prior to initial vaccination, intact males and any horses potentially intended for export should undergo serologic testing and be confirmed negative for antibodies to EAV. Testing should be performed shortly prior to, or preferably at, the time of vaccination. |
| Equine Influenza | Horses with ongoing risk of exposure: Semi-annual Horses at low risk of exposure: Annually |
Modified live vaccine: Single dose administered intranasally Revaccinate semi-annually or annually Inactivated vaccine 3-dose series: 2nd dose 4-6 weeks after 1st dose 3rd dose 3-6 months after 2nd dose Revaccinate Semi-annually or annually Canary pox vector vaccine: 2-dose series: 2nd dose 4-6 weeks after 1st dose Revaccinate semi-annually |
|
| Leptospirosis | Annually | 2-dose series: 2nd dose 3-4 weeks after 1st dose |
Annual revaccination |
| Potomac Horse Fever (PHF) | Semi-annually to annually | 2-dose series: 2nd dose 3-4 weeks after 1st dose Semi-annual or annual booster |
A revaccination interval of 3-4 months may be considered in endemic areas when disease risk is high |
| Strangles (Streptococcus equi) | Semi-annually to annually | Killed vaccine containing M-protein: 2-3 dose series: 2nd dose 2-4 weeks after 1st dose 3rd dose (where recommended by manufacturer) 2-4 weeks after 2nd dose Revaccinate semi-annually Modified live vaccine: 2-dose series: 2nd dose 3 weeks after 1st dose Revaccinate semi-annually to annually |
Vaccination is not recommended as a strategy in outbreak mitigation. |
Reference: Vaccinations for Adult Horses developed by the American Association of Equine Practitioners Infectious Disease Committee, 2008 and updated by the AAEP Biological & Therapeutic Agents Committee in 2012
| Disease | Previously vaccinated horses | Unvaccinated horses or horses with unknown history |
|---|---|---|
| Tetanus | Annually, 4-6 weeks pre-partum | 2-dose series: 2nd dose 4-6 weeks after 1st dose Revaccinate 4-6 weeks pre-partum |
| Eastern/Western Equine Encephalmyelitis (EEE/WEE) | Annually, 4-6 weeks pre-partum | 2-dose series: 2nd dose 4 weeks after 1st dose Revaccinate 4-6 weeks pre-partum |
| West Nile Virus (WNV) | Annually, 4-6 weeks pre-partum | It is preferable to vaccinate naive mares when open. In areas of high risk, Inactivated whole virus vaccine: 2-dose series: 2nd dose 4-6 weeks after 1st dose Revaccinate prior to the onset of the next vector season Recombinant canary pox vaccine: 2-dose series: 2nd dose 4-6 weeks after 1st dose Revaccinate prior to the onset of the next vector season Inactivated flavivirus chimera vaccine: 2-dose series: 2nd dose 3-4 weeks after 1st dose Revaccinate prior to the onset of the next vector season |
| Rabies | Annually, 4-6 weeks pre-partum or prior to breeding | Annually, 4-6 weeks pre-partum or prior to breeding |
| Disease | Previously vaccinated horses | Unvaccinated horses or horses with unknown history | Notes |
|---|---|---|---|
| Anthrax | Not recommended during gestation | Not recommended during gestation | |
| Botulism | Annually, 4-6 weeks pre-partum | 3-dose series: 1st dose at 8 months gestation 2nd dose 4 weeks after 1st dose 3rd dose 4 weeks after 2nd dose |
|
| Equine Herpesvirus (EHV) | 3-dose series with product labeled for protection against EHV abortion Give at 5, 7, and 9 months of gestation |
||
| Equine Viral Arteritis (EVA) | Not recommended unless high risk | Not recommended unless high risk | |
| Equine Influenza | Inactivated vaccine: Semi-annually with one dose administered 4-6 weeks pre-partum. Canary pox vactor vaccine: Semi-annually with one dose administered 4-6 weeks pre-partum |
Inactivated vaccine: 3-dose series: 2nd dose 4-6 weeks after 1st dose 2rd dose 4-6 weeks pre-partum Canary pox vector vaccine: 2-dose series: 2nd dose 4-6 weeks after 1st dose but no later than 4 weeks pre-partum |
|
| Leptospirosis | Safe for use in pregnant mares | 2 initial doses 3-4 weeks apart Annual revaccination |
Field safety testing has demonstrated this product is safe for use in pregnant mares |
| Potomac Horse Fever (PHF) | Semi-annually, with one dose given 4-6 weeks pre-partum. | 2-dose series: 1st dose 7-9 weeks pre-partum 2nd dose 4-6 weeks pre-partum |
A revaccination interval of 3-4 months may be considered in endemic areas when disease risk is high |
| Rotavirus | 3-dose series: 1st dose at 8 months gestation 2nd and 3rd doses at 4-week intervals thereafter |
3-dose series: 1st dose at 8 months gestation 2nd and 3rd doses at 4-week intervals thereafter |
|
| Strangles (Streptococcus equi) | Killed vaccine containing M-protein: Semi-annually with one dose given 4-6 weeks pre-partum. |
Killed vaccine containing M-protein: 3 dose series: 2nd dose 2-4 weeks after 1st dos 3rd dose 4-6 weeks pre-partum |
Vaccination is not recommended as a strategy in outbreak mitigation |
Reference: Vaccinations for Adult Horses developed by the American Association of Equine Practitioners Infectious Disease Committee, 2008 and updated by the AAEP Biological and Therapeutic Agents Committee in 2012 and again updated by an AAEP Vaccination Guidelines Review Task Force in 2015.
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