Canine Influenza Position Statement

canine influenza statement


TOPIC: Canine Influenza Virus H3N8 and H3N2

Information is rapidly evolving regarding a recent outbreak of Canine Influenza (Dog Flu) in the Chicago area and several other states. Although no reported cases of Canine Influenza have been documented in Missouri, we believe that the risk is adequate to warrant vaccination for Canine Influenza in dogs coming into contact with other dogs through dog parks, pet hotels, dog day cares, pet training facilities and pet grooming establishments. The Pet Care Facilities below now require the Canine Influenza vaccine.

As of April 13, 2015 the Chicago Canine Influenza outbreak is believed to have affected over 1,000 dogs. Of these, 141 cases have been identified as Canine Influenza. Five dogs have been documented to have died of the disease. Of those tested, 3 have been confirmed to be a new strain to the United States identified as H3N2 by genetic mapping.

The current Canine Influenza Vaccine is manufactured to protect against H3N8 Canine Influenza. This leads to question whether the H3N8 vaccine can protect against the H3N2 virus that has only recently entered the United States. Evidence, provided by Cornell University leads influenza experts to believe that the H3N8 vaccine may provide some protection against the H3N2 virus since the vaccine shares a similar Hemaglutinin (H3) component. Although research is still unclear, scientists are hopeful that the same Hemaglutinin (H3) component in the vaccine may protect host cells against entry of both the H3N8 and H3N2 viruses into a dog’s cells.

To summarize:

  • The recent Chicago outbreak of Canine Influenza included infections from both H3N8 and H3N2 Influenza viruses.
  • Death due to Canine Influenza was confirmed in 5 dogs. Experts suggest that the H3N8 vaccine may provide some protection against the H3N2 Influenza virus.
  • All dogs that tested positive for Canine Influenza in Cornell’s sampling did not have a history of vaccination for Canine Influenza.

It is the recommendation of Veterinarians signing below to vaccinate high risk dogs for Canine Influenza. It is also the requirement of Pet Care Facilities signing below that they will now require the vaccine be given to all dogs entering their facilities for boarding, daycare, grooming and training.




Paul J Schifano, DVM
Veterinary Care Center
Petropolis Pet Center
Paul J Schifano, DVM, President
Kristin Wrede, DVM
Veterinary Care Center
Kennelwood Pet Resorts
Alan Jones, President
Laura Joback, DVM
Veterinary Care Center
Williamsburg Pet Hotel & Suites
Todd Rowley, Owner
Jim Schuessler, DVM
Kirkwood Animal Hospital
Silver Maple Farm
Cheryl Schifano, President
Vet Group of Chesterfield
James Bollmeier, DVM
Four Paws Animal Hospital

Based on this newest information, we will continue to recommend vaccination against Canine Influenza for any dog that will be boarding, grooming, training, visiting dog parks, or participating in day camp programs. We will also continue to require the Canine Influenza vaccine yearly in addition to the Bordetella (Kennel Cough) vaccine every 6 months for any dog that will be boarding or attending day camp at Creve Coeur Animal Hospital.

Please don’t hesitate to call us with any additional concerns or questions,

The Doctors at Creve Coeur Animal Hospital

Christopher Moritz, DVM

Christine Moritz, DVM

Steven Glaeser, DVM

Raelynn Kemp, DVM

Tony Kronk, DVM

Lillian Sandberg, DVM