West Nile Innovator® Joins Pfizer Animal Health Line of Equine Vaccines

FOR IMMEDIATE RELEASE -- MADISON, NJ -- MAY 5, 2012 -- The trusted West Nile Innovator® West Nile virus (WNV) vaccine has moved to the Pfizer Animal Health brand with an updated package and label.

FOR IMMEDIATE RELEASE — MADISON, NJ — MAY 5, 2012 — The trusted WEST NILE INNOVATOR® West Nile virus (WNV) vaccine has moved to the Pfizer Animal Health brand with an updated package and label. Brought on with the acquisition of Wyeth and Fort Dodge Animal Health in 2009, WEST NILE INNOVATOR is now manufactured by Pfizer Animal Health.

WEST NILE INNOVATOR is approved for use in healthy horses 10 months of age or older as an aid in the prevention of viremia caused by WNV. West Nile is a widespread, mosquito-borne neurological disease that can kill approximately one in three clinically affected horses1, leading the American Association of Equine Practitioners to classify West Nile virus as a core vaccine that is recommended for all horses on an annual basis. Semi-annual vaccinations should be considered for horses in locations where mosquitoes are active year round.

WEST NILE INNOVATOR was shown to be 96.7 percent effective against a 2003 WNV outbreak among immunologically naïve horses2. As the first commercially available WNV vaccine with more than 30 million doses sold, WEST NILE INNOVATOR is still the veterinarian’s first choice for West Nile disease protection3. The vaccine is adjuvanted with MetaStim for an improved immune response to WNV4 and helps provide a duration of immunity of at least one year.

“The preference we see among veterinarians for WEST NILE INNOVATOR shows that veterinarians understand the demonstrated efficacy the vaccine has against WNV, which is a serious concern for horse owners,” said Andrea Wright, DVM, MVSc, Marketing Manager, Equine Biologicals for Pfizer Animal Health. “In addition to research and real-world data, Pfizer Animal Health stands behind the WEST NILE INNOVATOR vaccines with the Equine Immunization Support Guarantee.”

The WEST NILE INNOVATOR vaccines are included in the Equine Immunization Support Guarantee, which provides up to $5,000 for reasonable diagnostic and treatment costs if a horse properly vaccinated by a veterinarian contracts the corresponding equine disease. Disease protection backed by the Equine Immunization Support Guarantee includes infection from West Nile virus, equine influenza virus, tetanus, Eastern equine encephalomyelitis virus, Western equine encephalomyelitis virus, and Venezuelan equine encephalomyelitis virus. Vaccinations must be provided and administered by a licensed veterinarian with an established client-patient relationship to be eligible. For more information on this program, horse owners should contact their veterinarian.

For more information on the WEST NILE INNOVATOR vaccines, contact your Pfizer Animal Health representative or call 1-855-4AH-PFIZER (1-855-424-7349).

About Pfizer Animal Health

Pfizer Animal Health, a business unit of Pfizer Inc., is a world leader in the discovery, development and manufacture of innovative animal health vaccines, medicines, and diagnostic products. Pfizer Animal Health invests more in research and development than any other animal health company. We work to assure a safe, sustainable global food supply from healthy beef and dairy cattle, swine, poultry and fish while helping dogs, cats and horses live healthier longer lives. We strive to be the animal health company that provides full healthcare solutions to veterinarians, livestock producers, and pet owners. To learn more, visit


  1. Schuler, LA, et al. Evaluation of an outbreak of West Nile virus infection in horses: 569 cases (2002). J AM Vet Med Assoc. 2004 Oct 1;225(7):1084-9.
  2. Epp T, Waldner C, Townsend HG. A case control study of factors associated with development of clinical disease due to West Nile virus, Saskatchewan 2003. Equine Vet J 2007; 39:498-503.
  3. Market Dynamics Inc., October 2011
  4. Davis EG, et al. Investigation of Antigen Specific Lymphocyte Responses in Healthy Horses Vaccinated with an Inactivated West Nile Virus Vaccine. Vet Immunol Immunopathol 2008; 126(3-4):293–301.

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