Vaccine Guidlines

American Association of Equine Practitioners  – http://www.aaep.org/info/vaccination-guidelines

Core Vaccination Guidelines:

The core equine vaccines include tetanus, eastern and western equine encephalomyelitis (EEE/WEE), West Nile virus and Rabies.

http://www.aaep.org/info/vaccination-guidelines

  • Adult horses: Initial 2-dose series at a 3- to 4-week interval followed by a yearly booster. Horses that sustain a wound or undergo surgery 6 or more months after their previous tetanus booster should be revaccinated with tetanus toxoid immediately at the time of injury or surgery.
  • Foals of mares vaccinated against tetanus in prepartum period: Administer a 3-dose series beginning 4 to 6 months of age with a 4- to 6-week interval between the first and second doses and the third dose administered at 10 to 12 months of age.
  • Foals of unvaccinated mares or unknown vaccination history: Administer a 3-dose series beginning 1 to 4 months of age with a 4-week interval between doses.

Eastern and Western Equine Encephalomyelitis (EEE/WEE):

  • Adult horses: An initial 2-dose series at a 4- to 6-week interval is followed by a yearly booster prior to the vector season. In high risk animals, and in areas with year-round vectors, more frequent vaccination is recommended during periods of likely exposure (twice yearly).
  • Foals of mares vaccinated against EEE/WEE in prepartum period: Administer a 3-dose series beginning at 4 to 6 months of age with a 4- to 6-week interval between the first and second dose. The third dose is administered at 10 to 12 months of age.
  • Foals of unvaccinated mares or having unknown vaccinal history: Administer a primary series of 3 doses beginning at 3 to 4 months of age, with a 30-day interval between the first and second doses and a 60-day interval between the second and third doses. If the primary series is initiated during the mosquito vector season, an interval of 3 to 4 weeks between the second and third doses is preferable to the above described interval of 8 weeks.

West Nile Virus:

  • Adult horses: An initial 2-dose series at a 3- to 6-week interval is recommended with a yearly booster prior to the vector season.
  • Foals of vaccinated mares: Administer a primary 3-dose series beginning at 4-6 months of age with a 4- to 6- week interval between the first and second dose. The third dose should be administered at 10 to 12 months of age prior to the onset of the next mosquito season.
  • Foals of unvaccinated mares or having unknown vaccinal history: Administer a primary series of 3 doses beginning at 3 to 4 months of age, with a 30-day interval between the first and second dose and a 60-day interval between the second and third dose.

Rabies:

Rabies is an excellent immunogen and these vaccines induce a strong serologic response after a single dose. (Must be administered by a licensed veterinarian)

  • Adult horses: Following an initial single-dose administration, rabies vaccines are administered as a yearly booster.
  • Foals of mares vaccinated against rabies: Administer a primary 2-dose series. The first dose of vaccine should be administered no earlier than 6 months of age. The second dose should be given 4 to 6 weeks later. Revaccinate annually thereafter.
  • Foals of mares not vaccinated against rabies: Administer according to label directions. The first dose of vaccine should be administered at 3 to 4 months of age. Revaccinate annually thereafter.

Risk-Based Vaccines:

The use of risk-based vaccinations may vary regionally, from population to population within an area, or between individual horses within a given population. (Equine herpesvirus type 1 and 4, equine viral arteritis, equine influenza, rotaviral diarrhea and strangles).

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