Evaluation of an equine multi-antigen rabies combination vaccine in pregnant mares

  • Glenn Blodgett 6666 Ranch, Guthrie, TX
  • Chris Morrow Mobile Veterinary Practice, Amarillo, TX
  • Scott Bailey Claiborne Farm, Paris, KY
  • Jaye McCracken Hagyard Equine Medical Institute, Lexington, KY
  • Natanya Nieman Winstar Farm, Versailles, KY
  • Deborah Amodie Zoetis, Parsippany, New Jersey
  • Kenton Morgan Zoetis, Parsippany, New Jersey
Keywords: Broodmares, pregnancy, vaccination, rabies, live foaling rates, per cycle pregnancy rates


Mares are commonly vaccinated during pregnancy, especially in the late third trimester, with multiple vaccine products containing a variety of antigens. Currently, a new core antigens vaccine containing rabies virus, tetanus toxoid, eastern equine encephalomyelitis virus, western equine encephalomyelitis virus, and West Nile virus with and without the inclusion of Venezuelan equine encephalomyelitis virus is used in later term mares. Use of this vaccine has not been evaluated for safety in pregnant broodmares. We determined the safety of this vaccine in pregnant mares as it pertains to live foaling rate and per cycle pregnancy rate. Findings indicated that the use of a new multi-antigen rabies combination vaccine had no impact on live foaling rate nor per cycle pregnancy rates.


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How to Cite
Blodgett G., Morrow C., Bailey S., McCracken J., Nieman N., Amodie D., & Morgan K. (2023). Evaluation of an equine multi-antigen rabies combination vaccine in pregnant mares. Clinical Theriogenology, 15. https://doi.org/10.58292/ct.v15.9269
Research Reports