Is It Worth Getting Kennel Cough Vaccine?

You book a weekend trip and the boarding facility asks for proof of a recent kennel cough vaccine. Or maybe your dog just started daycare, and the intake form lists the Bordetella shot as a requirement. It’s a fair question: is this vaccine really necessary, or just another expense on the list?

The short, honest answer is that it depends on your dog’s lifestyle. The Bordetella vaccine is considered a non-core shot—recommended based on risk rather than for every dog. For social canines that spend time around other dogs, it’s likely worth the protection, though it won’t prevent every case of kennel cough.

Understanding Kennel Cough and the Bordetella Vaccine

Kennel cough is a highly contagious respiratory infection in dogs, often caused by the bacterium Bordetella bronchiseptica along with several viruses like canine parainfluenza and adenovirus. It spreads easily wherever dogs gather—boarding kennels, dog parks, daycare—causing a persistent, honking cough that can linger for weeks.

The Bordetella vaccine works by stimulating your dog’s immune system to produce antibodies against that specific bacterium. Because multiple pathogens can produce similar symptoms, the vaccine targets the most common bacterial culprit but does not protect against all viral causes. That’s one reason it’s not a core shot for every dog.

Who Should Consider the Vaccine?

Many owners assume the vaccine is mandatory, but the American Animal Hospital Association classifies it as non-core, meaning the decision should be based on your dog’s actual risk of exposure. Your dog’s lifestyle—not a one-size-fits-all rule—is what matters most.

• Dogs that visit dog parks or are boarded frequently: These high-traffic environments make exposure almost certain, and most facilities require proof of vaccination.
• Dogs attending daycare or group training classes: Close contact with other dogs increases the chance of catching and spreading the infection.
• Dogs that participate in shows or travel often: Competing or staying in new environments puts them in contact with dogs from different regions.
• Senior dogs and young puppies with weaker immune systems: They are at higher risk for severe illness and may benefit more from the protection.
• Dogs living in multi-dog households: If one dog brings kennel cough home, it can sweep through the pack quickly.

Your veterinarian can help match your dog’s specific routine to the appropriate vaccine. If you plan to board, vaccination is often a practical necessity rather than optional.

How Well Does the Vaccine Work?

No vaccine is 100 percent effective, and the kennel cough shot is no exception. One study of nearly 1,000 dogs found that the vaccine reduced coughing by about 20 percent compared with a placebo—meaning it lowers the chance of illness but doesn’t guarantee protection. Another study showed that 40 to 60 percent of dogs who came down with kennel cough had been vaccinated, underscoring that it reduces severity more than it prevents infection altogether.

The intranasal form offers a notable advantage: protection can start within 48 to 72 hours, making it useful for last-minute boarding. The oral vaccine, studied over 13 months, provided sustained immunity and reduced how much bacteria a vaccinated dog sheds.

The University of Wisconsin Shelter Medicine program’s annual booster schedule recommends yearly revaccination for dogs with ongoing risk, as immunity lasts roughly 12 months.

Choosing the right form depends on your dog’s temperament and timeline. Your veterinarian can recommend the option that fits best.

Factors to Consider Before Vaccinating

Deciding whether the vaccine is worth it involves weighing a few key factors. Here are considerations to discuss with your vet before making a choice.

1. Your dog’s exposure level: Frequent visits to boarding, daycare, or dog parks increase risk significantly.
2. Age and general health: Senior dogs and young puppies have weaker immune systems and stand to benefit most from vaccination.
3. Facility requirements: Most boarding kennels and daycares require proof of vaccination within the past 6 to 12 months.
4. Previous vaccine reactions: If your dog experienced mild lethargy or fever last time, your vet can help decide whether it’s still worth repeating.
5. Your veterinarian’s recommendation: The AAHA guidelines stress individual risk assessment, so your vet knows your dog’s full picture.

For a dog that rarely interacts with other canines, the vaccine may not be necessary. But for social dogs, the reduction in symptom severity often makes it a worthwhile investment.

What Does the Research Say?

A peer-reviewed study published in 2020 demonstrated that a single dose of the oral Bordetella vaccine provided effective protection for at least 13 months. Dogs that received the vaccine were less likely to develop disease and shed far fewer bacteria—a key benefit for curbing outbreaks in group settings.

That same research also highlighted that vaccinated dogs clear the infection faster and with milder symptoms compared with unvaccinated dogs. This aligns with earlier findings that the vaccine does not prevent all cases but consistently reduces how sick a dog gets.

Research published in the Journal of Veterinary Internal Medicine details how the oral Bordetella vaccine leads to reduced bacterial shedding, meaning vaccinated dogs are less likely to spread Bordetella bronchiseptica to other pets.

The Bottom Line

For dogs that socialize regularly, the Bordetella vaccine is generally worth considering because it reduces the severity and spread of a common, uncomfortable respiratory illness. It’s not a guarantee, but it offers meaningful protection for dogs at risk. Low-risk dogs—those that rarely leave home or interact with other pets—may skip it without strong concern.

A conversation with your veterinarian about your dog’s specific lifestyle, age, and health status will help determine whether the Bordetella vaccine is the right choice for your pet this year.