Results indicated that not only can dogs detect Covid faster, but they can also do so in a non-intrusive manner – so no need to swab your throat or nose
Dogs can detect Covid-19 faster and more accurately than a PCR test, a new study shows.
Researchers looked at the ability of canines to recognise the virus and its variants, even when they are obscured by other viruses, like those from common colds and flu.
More than 400 scientists from over 30 countries contributed to the study as well as 147 scent dogs, according to the findings published in the Journal of Osteopathic Medicine.
After analysing many studies covering both field and clinical experiments, Professor Dickey and Junqueira found that dogs who are trained to sniff out scents are “as effective and often more effective” than antigen tests.
A total of 53 dogs were trained to sniff out Covid scents, while 37 were not and scientists found that the dogs that were not trained were in some cases “slightly superior” to those that were pre-trained.
“The previously untrained dogs have the advantage that they are not as prone to indicating on scents other than the Covid–19 associated scent,” the paper said.
The results indicated that not only can dogs detect Covid faster, but they can also do so in a non-intrusive manner. This means you won’t need to put a swab in your throat or nose.
How can dogs detect the virus?
This essentially comes down to the dog’s highly evolved nose with its ability to sense out smells quicker.
Dogs possess up to 300 million olfactory receptors in their noses, compared to about six million in humans. And the part of a dog’s brain that is devoted to analysing smells is about “40 times greater” than humans. Canines also have ‘neophilia’, which means they are attracted to new and interesting odours
And so, with all these enhancements, dogs can detect very low concentrations of odours associated with Covid infections.
“They can detect the equivalent of one drop of an odorous substance in 10.5 Olympic-sized swimming pools,” Professor Dickey said. “For perspective, this is about three orders of magnitude better than with scientific instrumentation.”
Scientists also found that in some cases, the animals were also able to detect the virus in pre-symptomatic and asymptomatic patients, “whose viral load was too low for conventional tests to work.”
Professor Dickey has said that dogs can also differentiate Covid and its different variants in the presence of other respiratory viruses. This included the common cold or flu.
“They’re much more effective. In fact, one of the authors that we quote in the paper commented that the RT-PCR test is not the gold standard anymore. It’s the dog. And they’re so quick,” he added. “They can give you the yes or no within seconds if they’re directly smelling you.”
How was the study conducted to see if dogs can really detect Covid-19?
In some studies, the dogs gave a person a quick sniff, sitting down to see if the person has Covid. In another study, the dog was given a sweat sample to smell for a few minutes.
The press release has said that scent dogs, such as beagles, basset hounds and coonhounds are the ideal candidates for sniffing out the virus, given their “natural tendencies to rely on odours to relate to the world.”
But the studies which the researchers analysed showed a variety of dogs were up for the challenge and were able to sniff out the Covid odour. With a few weeks of training, puppies, older dogs, purebred and mixed breeds, both male and female were able to sniff such odours out and “all performed admirably,” the Eureka Alert press release said.
Although there has been success with dogs detecting such viruses, researchers believe there are still many challenges with using dogs for medical diagnoses.
“There’s quite a bit of research, but it’s still considered by many as a kind of a curiosity,” said Professor Dickey.
In conclusion, Professor Dickey and Junqueira said after reviewing the studies, believe that scent dogs deserve “their place as a serious diagnostic methodology that could be particularly useful during future pandemics, potentially as part of rapid routine health screenings in public spaces.”
“Perhaps, most importantly, we argue that the impressive international quality and quantity of COVID scent dog research described in our paper for the first time, demonstrates that medical scent dogs are finally ready for a host of mainstream medical applications,” they added.
An Adorable Journey: A Rescued Pup Finds Meaning and Unwavering Affection as a Surrogate Mom to Three Precious Kittens
Introducing Georgia, a courageous and tenacious shepherd mix who embarked on a challenging journey filled with both heartache and triumph. Initially found at a remote gas station, Georgia’s future appeared uncertain. But fate took an unexpected turn when her pregnancy was discovered, offering her a fresh start, albeit with its own set of hurdles.
Following her rescue, Georgia, a petite shepherd mix, received a thorough veterinary examination that revealed her impending motherhood, with the puppies expected in about a month. As days passed, Georgia acclimated to her new environment, basking in the freedom and comfort of a welcoming backyard.
Her excitement peaked on the fifteenth day as she eagerly explored her whelping pool. However, tragedy struck on the twenty-fifth day when she went into premature labor. The puppies, too tiny to latch, faced vulnerability and struggled to survive. Two of Georgia’s pups sadly didn’t make it past birth. In a desperate bid to save Georgia’s life, an emergency C-section and spaying were performed.
While Georgia physically recuperated from the ordeal, emotional scars lingered as she yearned for her lost babies. In an effort to offer her comfort and purpose, three motherless newborn kittens were introduced to her on the twenty-seventh day. Despite her grief, Georgia’s nurturing instincts kicked in, and she wholeheartedly embraced the kittens as her own. Even though not all the kittens could latch, Georgia diligently cared for them, bottle-feeding them until they could thrive independently.
Regrettably, one of the kittens passed away, leaving two healthy and thriving babies, named Graffiti and Gumball. Georgia’s dedication to her surviving offspring remained steadfast, providing them with the love and care they needed to flourish. Day by day, the bond between Georgia and her kittens grew stronger, and they found solace and contentment in each other’s presence.
On the thirty-second day, Georgia proudly christened her babies—Graffiti, Gumball, and the newest addition, Goober. The little family flourished, with the kittens opening their eyes, gaining weight, and reveling in the love and protection of their devoted mother.
However, on the forty-fifth day, a new challenge arose as Georgia developed a visible tumor. This brave shepherd mix was about to embark on a journey of cancer treatment and recovery, temporarily separating her from her beloved kittens. Despite this setback, Georgia’s prognosis was positive, and a full recovery was anticipated.
Day 50 marked a new chapter for Georgia as she transitioned to her adoptive home under the name Milo. Her new dad, @torbazorb14, provided her with love, care, and unwavering support throughout her cancer treatment. Day by day, Georgia’s strength and resilience shone through, and on day 70, she completed her final chemo treatment. This resilient little lady, who had endured abandonment, loss, and medical challenges, emerged victorious.
As Georgia continued her recovery, her kittens rapidly grew. They reached a healthy weight of 2.5 pounds and reveled in newfound confidence. While the author, a self-proclaimed dog person, acknowledged missing the mischievous kittens, they celebrated the happy endings awaiting them.
On day 95, a long-awaited reunion unfolded between Georgia (now Milo) and her kitten Gumball, now known as Toby. However, reality didn’t quite align with fairy-tale expectations. Milo displayed a hint of fear, serving as a reminder that animals express their emotions honestly. Nevertheless, it marked a genuine and joyous ending for Milo and Toby.
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