Concerned About the Rise of Canine Babesiosis?

Here’s Everything You Need to Know 


4 Sep, 2023

6 minutes

canine babesiosis

As a dog owner, you’ve probably thought a lot about flea and tick prevention for your beloved pooch. In addition to making your dog itchy and uncomfortable, fleas and ticks can also transmit serious diseases to your dog, which can sometimes even be fatal.  

Different species of ticks can carry multiple different diseases. Babesiosis is caused by a parasite called babesia, which can be transmitted by certain kinds of ticks, depending on where you are located in the world. 

Babesiosis occurs in domesticated dogs and wild canids on every continent, with the exception of Antarctica. It is generally considered one of the most common and widespread of all the canine vector-borne diseases. 

canine babesiosis treatment

What is Babesiosis? 

Canine babesiosis is a tick-borne disease that attacks a dog’s blood cells and causes a range of signs.  

How Does a Dog Become Infected with Babesiosis? 

Tick bites are the most common source of infection for dogs, although babesiosis is occasionally transmitted through blood, such as through a blood transfusion or dog fighting. 

Babesia is transmitted by ticks that have fed on infected dogs, whether or not they have signs of disease. Additionally, infected female ticks can lay thousands of eggs and pass the infection on to their own offspring as well, increasing the risk of transmission to other dogs.  

Dogs living in areas where there are lots of infected ticks have a high probability of becoming infected. When an infected tick bites a dog, they are not able to transmit Babesia immediately. Ticks must feed for 24-48 hours before Babesia is able to cross from the tick’s salivary glands to the dog2.  

What Behaviours Put a Dog at Risk for Babesiosis? 

Any dog that gets a tick bite is at risk of infection although infections are more common when dogs share their living spaces with numerous other dogs, such as in shelters and kennels. Also, dogs that have an active, outdoor lifestyle with frequent visits to natural environments where ticks are found face a higher risk of tick bites and subsequent infection. Dogs not protected by tick control treatments also face a higher risk of infection.

There may be some variations in breed-related susceptibility to tick bites and Babesiosis disease risk. For example, intact male dogs are more at risk than neutered males or females, although this is possibly a result of increased roaming. Some breeds have been reported to have an increased prevalence of Babesia parasites such as Pit Bull Terriers, Staffordshire Terriers and their crossbreeds.  

canine babesiosis symptoms

Can a Dog Be Infected and Not Show Signs? 

Babesiosis infections can be fatal, although many infected dogs do not develop any signs of disease. The presence of antibodies may be found in a blood test at the veterinary hospital in dogs that seem healthy but are actually infected (carriers). 

A positive test reveals that the dog had a tick bite that resulted in an infection. This likely means that most dogs infected will remain infected for life despite treatment. While these dogs may seem healthy, they can still create additional local disease risks by spreading the infection to local ticks. Previously infected dogs can succumb to the disease again under periods of stress or immunosuppression. 

What are the Signs of Babesiosis?  

The severity of babesiosis ranges from mild infections to widespread organ failure and death. Infected animals develop some level of anaemia, and some develop specific organ pathologies. 

 Other factors that will contribute to a dog’s outcome include age and immune status, the presence or absence of co-morbidities (such as immunosuppressive problems), and presence of other tick-borne infections. Also, young dogs tend to be more severely affected than adults. 

Dogs with clinical disease caused by Babesiosis may show the following symptoms: 

  • Lethargy 
  • Appetite loss 
  • Weakness (sometimes progressing to where the dog collapses)
  • Dark-coloured urine
  • Pale mucous membranes in the eyes, gums, mouth

What are the Treatments for Sick Dogs? 

Treatment for babesiosis generally includes administration of specific anti-babesial drugs in combination with supportive treatment, which restores adequate tissue oxygenation by correcting anemia, dehydration and electrolyte disturbances, if present. 

Other treatments in the regimen may include: 

  • Blood transfusions
  • Fluid therapy
  • Oxygen therapy
  • Treating tick infestations

Good nursing support is also crucial to a dog’s recovery which should include keeping the dog warm and feeding him/her a nutritious, balanced diet. 

canine babesiosis

Are Other Pets or People in The House at Risk? 

Babesiosis is not contagious like a cold or a flu, although parasites may be transmitted through bite wounds. The presence of an infected dog does indicate a risk to other dogs in the household from tick-bite transmission, so treating and eliminating all tick infestation is vital. 

Currently, the species of Babesia that infects dogs is not the same species that infects humans, but dog owners should be aware of the risks they face from infection of babesia and tick bites3.  

How Do I Prevent Babesiosis Infections in My Dog? 

There are a few steps you can take to prevent tick infection in your beloved pooch. Since there are no vaccines currently available to protect dogs against Babesiosis, the best solution is a consistent, effective tick protection program, which you can discuss with your veterinarian. This will also help reduce the risk of other tick-borne diseases.  

Other things you can do to prevent Babesiosis infections in your pup include: 

  • Avoid wooded or grassy areas at times of the year when ticks are feeding to reduce the risk of tick bite and subsequent infection. 
  • Examine your dog frequently for ticks, especially after visiting potential areas of infestation like kennels, parks frequented by dogs or wildlife, or other heavily vegetated areas. Remove ticks as soon as they are found. 
  • Ensure that all dogs using shared animal facilities, such as doggy day care, boarding kennels, or dog parks, receive tick control treatments to reduce the likelihood of tick infestation. 
  • Use tick control treatments all year because it is difficult to precisely predict when ticks will be out feeding. With Bravecto® you can protect your dog all year round with just 4 doses. 
  • Get your dog checked by a veterinarian. Early detection of Babesiosis infections in dogs can be very helpful in reducing disease risks and ensuring treatment is started if needed.   




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