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Canine influenza virus (CIV) was already an emerging concern within the veterinary community when the highly contagious CIV type H3N2 was identified in the U.S. in March 2015 and quickly spread across more than 30 states.1

About Canine Influenza Virus

As you may know, CIV is highly contagious.2 Direct contact and droplets from sneezing or coughing spread CIV directly from dog to dog. Droplets also contaminate surfaces, food, bowls and other objects, increasing the potential for further infections.2,3 Environments such as dog shows, dog parks, pet day care centers and the like can be particularly risky.

CIV can be difficult to diagnose and potentially difficult to treat. Clinical signs—including coughing, sneezing, nasal and ocular discharge, and anorexia—sometimes don’t emerge until after the majority of virus shedding has occurred. Plus, samples collected during clinical exams may not identify CIV.4

All dogs can be at risk of contracting CIV—regardless of breed, age, sex or health status.2 In some cases, CIV symptoms can be severe. Prevention remains the best course of action.


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VANGUARD CIV H3N2 antigens help you protect your canine patients from outbreaks.

Strain: Canine influenza virus H3N2, A/canine/Illinois/12191/2015 (H3N2)

  • Aids in controlling disease associated with CIV H3N2

Indication: For use in healthy dogs ≥ 8 weeks of age

  • 2 doses, 3 weeks apart
  • Recommended annual revaccination with a single dose
  • Availability: 25 x 1-dose packages

1 Canine influenza virus surveillance network: recent H3N2 testing summary 5/23/2015 - 7/11/2016 (last 45 days). Cornell University Animal Health Diagnostic Center. Accessed February 8, 2017.

2 Canine influenza: pet owners’ guide. American Veterinary Medical Association. Accessed February 8, 2017.

3 Crawford C, Spindel M. Canine influenza. In: Miller L, Hurley K, eds. Infectious Disease Management in Animal Shelters. Ames, IA: Wiley-Blackwell; 2009:173-180.

4 Dubovi EJ, Njaa BL. Canine influenza. Vet Clin North Am Sm Anim Pract. 2008;38(4):827-835.

The product information provided in this site is intended only for residents of the United States. The products discussed herein may not have marketing authorization or may have different product labeling in different countries. The animal health information contained herein is provided for educational purposes only and is not intended to replace discussions with an animal healthcare professional. All decisions regarding the care of a veterinary patient must be made with an animal healthcare professional, considering the unique characteristics of the patient.

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