Both illnesses cause a cough and spread where dogs gather, which is why owners mix them up. The key point for boarding is that one vaccine does not cover the other.
Two names, different germs
The AVMA notes that the signs of canine influenza are similar to those of canine infectious respiratory disease complex, the term vets use for kennel cough. Both can involve a persistent cough, nasal discharge, lethargy and reduced appetite. AAHA explains that Bordetella bronchiseptica, canine parainfluenza virus, canine adenovirus-2 and canine influenza virus are among the pathogens behind that complex.
In plain terms, "kennel cough" describes a pattern of illness with many possible causes, and canine influenza is one named virus, with two strains found in North America, H3N8 and H3N2.
Side by side
| Kennel cough (Bordetella) | Canine influenza | |
|---|---|---|
| What it is | Respiratory illness with several causes; Bordetella is one common bacterium | Highly contagious respiratory disease from two type A influenza viruses |
| Vaccine | Bordetella vaccine (nasal, oral or injection); ask your veterinarian which fits | Canine influenza vaccine covering H3N2 and H3N8 |
| Series | Timing set by your veterinarian | Initial dose, booster in 3 to 4 weeks, then yearly |
| At Happy Paws | Required | Recommended, not required |
Why vaccinating for both matters at a kennel
The AVMA says dogs that are boarded or mix with other dogs at daycare, dog parks and shows are at particular risk when influenza is circulating, and that infected dogs can spread the virus before they look sick. It recommends Bordetella and canine influenza vaccines for dogs that visit places where other dogs gather, including boarding.
Vaccines reduce the chance of illness and how severe it is. A vaccinated dog can still pick up a respiratory illness, which is why a kennel asks for records on every dog. This page is general information, not medical advice. Ask your veterinarian which vaccines suit your dog.
What to do before your stay
Check your dog's record for a Bordetella line and a separate canine influenza line, both good through your last day. If your dog has never had the flu vaccine, get the first dose as soon as you book and schedule the booster 3 to 4 weeks later; the kennel accepts a record with the first dose, but the booster should follow. See Bordetella, canine influenza, boarding and kennel cough risk and kennel cough symptoms.