Prestige® 3

(EEE, WEE, Tetanus)


Prestige flu-containing equine vaccines contain the most updated flu strains available.

  • Formulated to minimize reactions and maximize protection
  • Available in 10-dose vials and 1 mL single-dose prefilled syringes
  • A combination of inactivated, concentrated, adjuvanted, tissue culture origin equine herpesvirus types 1 and 4 (EHV-1 and EHV-4) and equine influenza virus type H3N8 strains EIV A/eq/Florida/RW/13, EIV A/Equine 2/Kentucky/02 American, EIV A/eq/Richmond/1/07.
  • Advanced filtration process through the Antigen Purification System (APS™)
  • Exceptional safety profile with the exclusive Havlogen® Adjuvant


This product has been shown to be effective for the vaccination of healthy horses 6 months of age or older against Eastern and Western encephalomyelitis viruses and tetanus. Duration of immunity has not been established. For more information regarding safety and efficacy data, go to


For primary vaccination aseptically administer 1 mL intramuscularly, repeat with a single dose in 3 – 4 weeks. Historically, annual revaccination with this product has been recommended. The need for this booster has not been established. For more information on revaccination frequency, consult your veterinarian.


Learn more about the updated line of Prestige vaccines.

Equine Product Reference Guide

A guide to the entire equine product line from Merck Animal Health.


Science of Significant Protection Technical Bulletin

Understanding genetic characterization of recent equine influenza outbreaks to assess relevance of vaccine influenza strains.  


The Science of Significant

Download a pdf below or request printed copies at the following E-Mail:

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