Dog Flu: Symptoms, Treatment, and Prevention By Anna Burke | Published: Nov 03, 2022
collars, and kennel surfaces, or through contact with people who have had direct contact with an infected dog.
When it comes to the dog flu, it’s important to always be prepared. While most cases are not fatal, the canine influenza virus can make your pup uncomfortably sick, causing them — and you — a lot of stress and time spent at the vet’s office. If you are a dog owner, you don’t need to panic about the dog flu. You should, however, familiarize yourself with the symptoms so that you know what to look for in the event of an outbreak in your area. What Is Dog Flu? Dog flu, or canine influenza virus, is an infectious respiratory disease caused by an influenza A virus, similar to the viral strains that cause influenza in people. There are two known strains of dog flu found in the United States:
• H3N8 • H3N2
Crowded areas like kennels, grooming parlors, daycare centers, and dog parks are breeding grounds for diseases like canine influenza. The close proximity of the dogs means that a barking, coughing, or sneezing dog can easily infect canines around them. This is made more dangerous by the fact that dogs are most contagious during the incubation period before they start exhibiting symptoms. The incubation period of canine influenza is approximately two-to-four days from initial exposure to the dog flu virus. Viral shedding starts to decrease after the fourth day, but dogs with H3N8 remain contagious for up to 10 days after exposure, and dogs with H3N2 remain contagious for up to 26 days. Most vets recommend isolating dogs with H3N2 for at least 21 days to reduce the How Long Are Dogs Infected With Dog Flu Contagious?
The H3N8 strain actually originated in horses. The virus jumped from horses to dogs, becoming a canine influenza virus around 2004, when the first outbreaks affected racing Greyhounds at a track in Florida. H3N2, on the other hand, originated in Asia, where scientists believe it jumped from birds to dogs. H3N2 is the virus responsible for the 2015 and 2016 outbreaks of canine influenza in the Midwest and continues to spread throughout the United States. How Is Canine Influenza Spread? Like human forms of influenza, dog flu is airborne. Respiratory secretions escape into the environment in the form of coughing, barking, and sneezing, where they are then inhaled by a new canine host. The dog flu also spreads through contaminated objects and environments, like water bowls,
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