Canine Influenza (Dog Flu) Bivalent Vaccine: What You Need to Know

What is canine influenza?

Canine influenza, or dog flu, is a highly contagious respiratory infection caused by influenza viruses that affect dogs. The two most common strains in the U.S. are:

  • H3N8
  • H3N2

The bivalent canine influenza vaccine protects against both strains, offering broader protection for your dog.

What does “bivalent” mean?

“Bivalent” means the vaccine targets two different वायरस strains. In this case, it helps protect dogs from both H3N8 and H3N2 canine influenza viruses.

What are the symptoms of dog flu?

Common signs include:

  • Persistent cough
  • Sneezing
  • Nasal discharge
  • Fever
  • Lethargy
  • Reduced appetite

Some dogs develop mild illness, while others may experience more severe respiratory issues.

How do dogs get canine influenza?

Dog flu spreads easily through:

  • Airborne droplets from coughing or sneezing
  • Shared surfaces like bowls, toys, or kennels
  • Close contact with infected dogs

Outbreaks are more common in:

  • Boarding facilities
  • Dog daycares
  • Grooming salons
  • Shelters

Does my dog need the influenza (bivalent) vaccine?

The influenza vaccine is strongly recommended for dogs who:

  • Socialize frequently with other dogs
  • Are boarded or attend daycare
  • Visit groomers regularly
  • Travel or participate in events

In areas like Cincinnati, where dogs are often active and social, vaccination can help reduce outbreak risk.

What is the canine influenza vaccine schedule?

The bivalent influenza vaccine is given as:

  • Initial series: Two doses, 2 to 4 weeks apart
  • Booster: Annually (or as recommended by your veterinarian)

Your veterinarian will tailor the schedule to your dog’s lifestyle and risk level.

Can vaccinated dogs still get dog flu?

Yes, but vaccination typically:

  • Reduces severity of symptoms
  • Shortens illness duration
  • Decreases spread to other dogs

How serious is canine influenza?

Most dogs recover within 2 to 3 weeks, but complications can occur, including:

  • Pneumonia
  • Secondary bacterial infections

Puppies, senior dogs, and those with underlying health conditions are at higher risk.

How is canine influenza treated?

Treatment is supportive and may include:

  • Rest and hydration
  • Cough suppressants
  • Anti-inflammatory medications
  • Antibiotics if secondary infections develop

Severe cases may require hospitalization.

When should I take my dog to the vet?

Seek veterinary care if your dog:

  • Has a persistent cough
  • Develops a fever
  • Becomes lethargic or stops eating
  • Shows difficulty breathing

Early care helps prevent complications.

Canine Influenza Vaccine FAQ

Is the dog flu vaccine required?

Not always, but many boarding and daycare facilities require it.

Is canine influenza the same as kennel cough?

No, but they share similar symptoms. Dog flu is caused by influenza viruses, while kennel cough involves multiple pathogens.

How effective is the bivalent vaccine?

It provides strong protection against both major strains and helps limit outbreaks.

Protect Your Dog from Dog Flu in Cincinnati

At Deer Park Vet Hospital, we offer the bivalent canine influenza vaccine to help protect your dog from both major strains of dog flu.

Our team will help you determine if this vaccine is right for your pet based on their lifestyle and exposure risk.

Call today or schedule your dog’s vaccination appointment online.