Is dog flu common in the UK?

True canine influenza is not considered widespread in the UK the way it is in some other countries. Most flu-like respiratory illness in UK dogs turns out to be kennel cough or a related virus or bacteria rather than canine influenza specifically.

What's the difference between dog flu and kennel cough?

They can look very similar from the outside, both causing coughing, a runny nose and reduced energy, but they're caused by different organisms. In the UK, kennel cough and related infections are far more commonly seen than true canine influenza.

How long does canine respiratory illness usually last?

Most mild cases resolve within one to three weeks with rest, similar to a cold in a person. A dog struggling to breathe, refusing food, or seeming seriously unwell needs a vet promptly rather than being left to recover alone.

Can vaccination protect my dog against respiratory illness?

Some of the causes of kennel cough and related illness are covered by routine or optional vaccines, though not every possible cause is. Speak to your vet about which vaccinations make sense given your dog's lifestyle and how much they mix with other dogs.

Dog flu in the UK: what to know

What people usually mean by "dog flu" in the UK is a respiratory illness with flu-like signs — coughing, a runny nose, sneezing and general lethargy — rather than the specific canine influenza virus that circulates more widely in the US. In the UK, contagious respiratory illness in dogs is far more often kennel cough or a wider mix of viruses and bacteria known collectively as canine infectious respiratory disease complex.

What's actually circulating in UK dogs

True canine influenza is not considered widespread in the UK the way it is in parts of the US, and most UK cases of a flu-like illness in dogs turn out to be kennel cough or one of several other viruses and bacteria that cause similar symptoms. These spread easily wherever dogs mix closely, such as kennels, daycare, training classes or busy parks.

Because several different bugs can cause a very similar-looking illness, it's not usually possible to tell exactly which one your dog has just from the symptoms at home, which is part of why a vet visit matters if the illness seems more than mild.

Signs to watch for

A persistent, sometimes harsh-sounding cough, a runny nose or eyes, sneezing, and a general drop in energy or appetite are the most common signs of a respiratory illness in dogs. Most cases are mild and resolve within one to three weeks with rest, similar to a mild cold in a person.

A smaller number of dogs, particularly puppies, older dogs, or those with existing health conditions, can develop a more serious illness including pneumonia, which is why any dog struggling to breathe, refusing food, or seeming seriously unwell needs a vet promptly rather than being left to rest it out.

Reducing the risk

Avoid places where lots of dogs mix closely if there's a known outbreak locally, keep your dog's vaccinations up to date, since some respiratory bugs are covered by routine or optional vaccines, and speak to your vet about which vaccinations make sense for your dog's lifestyle.

If your dog does develop a cough or other respiratory signs, keeping them away from other dogs until a vet has seen them helps reduce how far it spreads, since many of these illnesses are contagious for some time even once symptoms start improving.

Common questions

Is dog flu common in the UK?: True canine influenza is not considered widespread in the UK the way it is in some other countries. Most flu-like respiratory illness in UK dogs turns out to be kennel cough or a related virus or bacteria rather than canine influenza specifically.
What's the difference between dog flu and kennel cough?: They can look very similar from the outside, both causing coughing, a runny nose and reduced energy, but they're caused by different organisms. In the UK, kennel cough and related infections are far more commonly seen than true canine influenza.
How long does canine respiratory illness usually last?: Most mild cases resolve within one to three weeks with rest, similar to a cold in a person. A dog struggling to breathe, refusing food, or seeming seriously unwell needs a vet promptly rather than being left to recover alone.
Can vaccination protect my dog against respiratory illness?: Some of the causes of kennel cough and related illness are covered by routine or optional vaccines, though not every possible cause is. Speak to your vet about which vaccinations make sense given your dog's lifestyle and how much they mix with other dogs.

Sources

Written against guidance published by UK veterinary and welfare organisations. Always confirm specifics with your own vet.

Written by Matt Garnett, who runs Giddy Pets and is a lifelong pet owner — not a vet. This is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your animal. How we write these guides.