Vaccination Schedule
Recommendations obtained from the UC Davis Book of Horses

Disease
Foals and Weanlings*
Yearlings**
Performance Horses**
Pleasure Horses**
Broodmares
Comments
Tetanus 1st dose: 6 mos.
2nd dose: 7 mos.
3rd dose: 9 mos.
Yearly Yearly Yearly Yearly, 4-6 weeks before foaling
Eastern and Western Equine Encephalo- myelitis or sleeping sickness (EEE and WEE) 1st dose: 6 mos.
2nd dose: 7 mos.
3rd dose: 9 mos.
Yearly, in the spring Yearly, in the spring Yearly, in the spring Yearly, in the spring Venezuelan Equine Encephalomyelitis (VEE) also recom- mended for horses in border areas of TX, NM, AZ, CA
Influenza
intranasal**
1st dose: 9 mos.
2nd dose: 11 mos.
Every 6 mos. Every 6 mos. Every 6 mos. with added boosters 2-4 weeks prior to anticipated exposure At least every 6 mos. with inject. booster timed 4-6 weeks before foaling  
Influenza - 
injectable**
1st dose:9 mos.
2nd dose: 10 mos.
3rd dose: 12 mos.
Every 3-4 mos. Every 3-4 mos. Every 6 mos. with added boosters 2-4 weeks prior to anticipated exposure At least every 6 mos. with one booster timed 4-6 weeks before foaling  
Rhinopneumonitis (EHV-1, EHV-4) 1st dose: 3-5 mos.
2nd dose: 4-6 mos.
3rd dose: 5-7 mos.
repeat every 3-4 mo
Every 3-4 mos. Every 3-4 mos. Optional: every 6 mos., stallions and barren mares - boosters every 6 mos. EHV-1 during the 5th, 7th and 9th month of pregnancy (3rd month optional) Vaccination of mares pre-breeding and 4-6 weeks before foaling with EHV-1 and EHV-4 recommended
Rabies 1st dose: 6 mos.
2nd dose: 7 mos.
3rd dose: 15 mos.
Yearly Yearly Yearly Yearly, before breeding Recommended in areas where wildlife rabies is a problem
Strangles
intranasal***
1st dose: 1-6 mos.
2nd dose: 2-7 mos.
3rd dose: 3 mos. following the 2nd dose
or 2-4 wks pre-weaning
Every 6 mos. Optional every 6 mos. if risk is high Optional every 6 mos. if risk is high Every 6 mos. with injectable booster timed 4-6 weeks before foaling Recommended when risk of exposure is high
Strangles
injectable***
1st dose: 5-12 wks.
2nd dose: 8-16 wks.
3rd dose: 11-20 wks.
(depending on product)
4th dose: 6-8 mos.
Every 6 mos.  Optional every 6 mos. if risk is high Optional every 6 mos. if risk is high Every 6 mos. with one booster timed 4-6 weeks before foaling Start initiation of primary series before 6 mos. of age if risk of exposure is high.

* Recommendations for foals and weanlings assumes that the mares were regularly vaccinated against specific diseases listed

** Recommendations for yearlings and older horses assumes the primary series was completed early in life, otherwise follow label directions for primary immunization

*** For pre-foaling boosters for mares, administer injectable inactivated vaccines rather than modified live intranasal vaccines

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