The two-year-old dog became lethargic, thin and listless, deteriorating to the point that it was admitted to a pet hospital for a week for a blood transfusion.
“I was really worried about him,” Ms Powell, an enrolled nurse, said.
Testing confirmed Leo had ehrlichiosis, a disease transmitted through bites from brown dog ticks carrying the Ehrlichia canis bacteria.
But what worried the specialists is that Leo lives in the urban Top End, which some experts fear is becoming a new stronghold for a disease spreading like wildfire.
The first Australian case was detected in the Kimberley region of Western Australia in May last year.
By June, cases were rapidly emerging in Katherine in the Northern Territory and the surrounding remote communities.
The Northern Territory government has recorded 370 confirmed cases — 110 in the Darwin and Arnhem Land region, 149 in the Katherine region, 36 in Tennant Creek and in Alice Springs and surrounds, 75.
Experts say countless more have been left undetected in remote communities with little intervention.
“When we finally got to bring him home, [the vets] said he needs to stay inside, he’s at risk of spontaneous bleeding and he might not make it,” Ms Powell said.
“It was very full-on, very emotional.
“There were tears basically every night.”
Until the first cases were discovered just last year, stringent biosecurity controls had kept ehrlichiosis out of Australia.
Experts are still baffled by how the disease got in but, according to Professor Peter Irwin from the School of Veterinary Medicine at Murdoch University, the disease is now considered “endemic” across the NT.
“Ehrlichiosis is one of the most serious diseases of dogs in my opinion,” he said.
“It makes them very ill, and many dogs can die.
“Once it establishes into a tick population, it’s very difficult to eradicate.”
Common symptoms include lethargy, fever and cloudy eyes, which can be cleared up with antibiotics but, if left untreated, the disease can lead to blindness, uncontrollable bleeding and death.
“The problem with this disease is that dogs travel and spread infected ticks,” Professor Irwin said.
“Dogs that have moved from an endemic area of the community into the city will possibly bring ticks with them, and the ticks can then drop off.
“There have now been dogs with the disease identified in most other capitals, most as a result of travel from the north.”
Doctor Stephen Cutter, the head veterinarian at Darwin’s Ark Animal Hospital, is no stranger to the crippling disease.
He said up to 40 per cent of the dogs are infected in the remote communities of the Top End he visits on rotation.
But in August of last year, he saw his first case in a pet that had not left urban Darwin.
Arielle Giles, a vet at the Darwin Veterinary Hospital, confirmed the disease’s spread to Darwin, saying she had seen six cases in the past three months.
“It’s a devastatingly bad disease and it’s really difficult to treat,” Dr Cutter said.
“It’s basically everywhere and it’s now a matter of living with it.”
Both Professor Irwin and Dr Cutter said keeping ticks at bay is the best way to prevent ehrlichiosis.
“Because the infection is transmitted so quickly from the tick bites, the most important way of protecting your dog is to use a product, such as a collar that kills ticks before they bite,” Professor Irwin said.
It has now been five months since Leo was struck down by the tiny parasite and, while he is still getting regular check-ups and his future is looking brighter, vets can’t give the all-clear.
“Ehrlichiosis is really nasty in that it can stay hidden in the bone marrow for a long period of time,” Dr Cutter said.
Earlier this year, the NT government brought on a new coordinator to transition the NT’s response to the disease from a biosecurity threat to managing the outbreak.
“This disease is a nationally notifiable disease, which means that suspected cases of E.canis need to be reported, and free testing can be carried out on blood samples from suspected dogs,” said the chief vet at the Department of Industry, Tourism and Trade, Dr Sue Fitzpatrick.
Lost dogs finally reunite with family because they smelled sausage
Two beloved pet dogs that vanished while they were out for a walk in the hills are safe at home thanks to the smell of grilled sausages.
Miniature schnauzers Charlie and Theo were missing for four days after disappearing in thick fog on the Red Pike fell near Buttermere, Cumbria.
Distraught owners Liz and Graham Hampson launched a rescue campaign and sought help from mountain rescue teams, family and friends.
There was no sign of the dogs as more than 120 people and two drones scoured the hills, so Liz and Graham decided to try to lure them with their favourite bangers.
They set up a barbecue near the spot where Charlie and Theo, who are father and son, vanished and shouted the dogs’ names.
To their amazement, a short time later the dogs appeared through the trees, leading to an emotional reunion.
Liz, 49, from nearby Cockermouth, said: “When they first appeared it was like a mirage. I could not believe it was them.
“My husband ran up the hill to grab them as I was just shaking and crying. I could not function.
“The dogs are just gorgeous, and they are part of our family. It would be horrible not to have them around.
“They absolutely love sausages. They have them every Sunday for breakfast, so if there was one food they were going to come back for, it was sausages.”
Liz and Graham’s son John was walking Charlie, aged seven, and Theo, aged 15 months, on top Red Pike fell on June 16.
The weather turned at lunchtime and a thick mist rolled in, causing the 21-year-old to lose sight of the dogs.
He rang his mum straight away to let her know what had happened, and they immediately started to form a rescue party.
Liz said: “I was beside myself when John called. The dogs walk off lead when there is no livestock around and are used to being on the fells.
“It was a horrible phone call. We called our family and messaged friends and put out an appeal for people to look out for them on Facebook and Twitter.
“I also have a few friends who are part of mountain rescue groups so I asked if they could keep their eyes peeled if they were called out to a rescue.”
Liz and Graham spent the first night camping on the fell and calling the dogs’ names trying to get them to come back.
They then spent the next few days over Father’s Day weekend hiking all around the area in hot weather trying to find them.
On the morning of June 19, Mark Steel, a GP and member of Cockermouth Mountain Rescue Team, said the dogs were likely on the other side of the fell, near Gillerthwaite.
Together they hatched a plan to get the dogs back, and started barbecuing sausages.
Liz said: “It was great to see them appear through the trees.”
“They were thin, and they smelled, but thankfully they’d kept themselves hydrated in the heat.
“We took them to the vets the next day and they were given a clean bill of health.”
She added: “My son is in the navy and we rang him first to tell him. A huge cheer went up on his ship.
“Charlie and Theo are actually dad and son so we’re now joking they had a Father’s Day weekend.
“And they’ve told us nothing about what happened. I guess what goes on tour, stays on tour.”
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