The kennel cough vaccine (also known as the Bordetella vaccine) is a preventive immunization that protects dogs against the most common infectious causes of kennel cough, a highly contagious respiratory illness. It is one of the most widely recommended vaccines for dogs that spend time around other dogs in boarding, grooming, daycare, or dog park settings.
What Is the Kennel Cough Vaccine?
Kennel cough, clinically known as infectious tracheobronchitis, is caused by a combination of bacteria and viruses — most notably Bordetella bronchiseptica (the primary bacterial culprit), canine parainfluenza virus, and canine adenovirus type 2. The kennel cough vaccine targets these pathogens to reduce the severity and likelihood of infection.
The vaccine is available in three delivery forms:
- Intranasal (IN) — drops administered directly into the nostrils. This form stimulates local mucosal immunity at the site of infection and typically provides faster protection, often within 3–5 days.
- Oral — liquid administered by mouth. Similar fast-acting local immunity as the intranasal form.
- Injectable — a traditional subcutaneous injection. Slower onset of full protection (around 3–4 weeks) but may be preferred for dogs who strongly resist nasal or oral administration.
The Bordetella vaccine is classified as a “lifestyle” or non-core vaccine — meaning it is recommended based on a dog’s risk of exposure rather than being universally required for all dogs. The core vaccines (rabies, distemper, parvovirus) are recommended for every dog. The kennel cough vaccine is strongly recommended for any dog that regularly interacts with other dogs. You can review your dog’s full vaccination schedule in our dog vaccination schedule guide.
How the Kennel Cough Vaccine Works
The kennel cough vaccine stimulates the immune system to produce antibodies against Bordetella bronchiseptica and associated respiratory pathogens. Because the nasal and oral forms are administered at the site where infection typically begins (the upper respiratory tract), they generate mucosal IgA antibodies that provide rapid local defense.
| Vaccine Type | Route | Onset of Protection | Duration | Notes |
|---|---|---|---|---|
| Intranasal | Nose drops | 3–5 days | 12 months | Fast acting; some dogs sneeze briefly after |
| Oral | By mouth | 3–5 days | 12 months | Easy for compliant dogs |
| Injectable | Under skin | 3–4 weeks | 12 months | May cause mild soreness at injection site |
No vaccine offers 100% protection — kennel cough can be caused by numerous pathogens, and the vaccine primarily targets Bordetella and the most common viral contributors. Vaccinated dogs may still contract kennel cough but typically experience much milder symptoms and recover faster than unvaccinated dogs.
Vaccination frequency: most vets recommend the Bordetella vaccine every 6–12 months for high-risk dogs. Many boarding facilities and groomers require proof of vaccination within the past 6 months. Always confirm timing requirements with your specific boarding facility — this can help avoid surprises when you drop off your dog.
Why the Kennel Cough Vaccine Matters for Pet Owners
Kennel cough spreads rapidly wherever dogs congregate — boarding kennels, groomers, dog parks, training classes, shelters, and even veterinary waiting rooms. The good news is that most healthy adult dogs recover from kennel cough on their own within 1–3 weeks. The concern is for puppies, senior dogs, and immunocompromised pets, for whom kennel cough can progress to pneumonia, a potentially life-threatening complication.
The vaccine is also practically essential for pet owners who regularly use pet boarding services or professional grooming — most facilities require it. The cost is modest: the Bordetella vaccine typically costs $20–$45 at a veterinary clinic, making it one of the more affordable preventive care measures available.
For dogs showing symptoms of kennel cough (a honking cough, retching, or mild nasal discharge), contact your veterinarian. Most cases are managed with rest and supportive care, but antibiotics may be prescribed if Bordetella infection is confirmed or complications are suspected.
Best Practices for Kennel Cough Vaccination
- Vaccinate at least 3–4 weeks before boarding or high-exposure activities — especially if using the injectable form, which takes longer to reach full efficacy.
- Ask your vet which form is appropriate — intranasal or oral for fast protection before an upcoming boarding stay; injectable if your dog is difficult to administer nasal drops to.
- Maintain annual boosters — or every 6 months if your dog boards, attends daycare, or frequents dog parks regularly.
- Keep vaccination records accessible — boarding facilities, groomers, and trainers will ask for proof of current Bordetella vaccination.
- Vaccinate puppies early — the Bordetella vaccine can typically be given from 6–8 weeks of age. It is especially important before puppy classes or any group socialization setting. See our puppy vaccination schedule for a full timeline.
- Combine with your routine vet visit — the kennel cough vaccine is often administered alongside other annual boosters to minimize the number of vet trips.