Chch dog death first NZ case of parasite

Biosecurity New Zealand is urging dog owners to ensure their pets have up to date flea and tick treatments, after a disease-causing parasite Babesia gibsoni was detected in a Christchurch dog.

The dog, a female staffordshire bull terrier, was “extremely unwell” and euthanised at its owners’ request. A second dog in the household had its blood tested. Early results were negative for the disease.

Babesia gibsoni is widespread around the world, including Australia, but this was the first case in a New Zealand-bred dog. It can cause the disease babesiosis, which causes the rupture of red blood cells. Symptoms can range from mild to severe.

Samples had been taken from several dogs known to be close contacts of the infected dog, including one of its dog playmates, Biosecurity New Zealand chief veterinary officer Dr Mary van Andel said.

Biosecurity New Zealand was working with the dog’s owners to identify and test other dogs she had been in contact with.

“Along with ticks, the parasite can also be spread through dog bites, blood transfusion and through the placenta from an infected mother to her pups.

“In countries where Babesia gibsoni is widespread, the focus is on preventing infection by treating dogs with tick treatments or combined with flea treatments, and limiting fighting behaviour.”

Van Andel said dog owners should not be alarmed.

“At this stage we are aware of just one case of Babesia gibsoni in New Zealand. We are working hard to determine whether this is an isolated case and where it came from.”

Overseas, pit-bull terriers, staffordshire bull terriers and greyhounds were the most commonly affected breeds.

Dogs without symptoms or that had recovered from infection often reached a balance where their immune system suppressed the parasite.

However, they could still spread the parasite and develop disease if they became immune compromised.

“The parasite is often transmitted by ticks, so we are encouraging dog owners to make sure their dogs are up to date with their flea and tick treatment,” van Andel said.

Further information about Babesia gibsoni can be found on the MPI website.