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.
Stray Pup Brings Traffic to a Standstill on the Pan-American Highway in Quest for Beloved Owner
In a world often characterized by the hustle and bustle of daily life, moments of unexpected compassion and extraordinary encounters remind us of the deep bond that can exist between humans and animals. This is the heartwarming tale of a stray puppy who, in his unwavering quest for his beloved owner, brought traffic to a standstill on the busy Pan-American Highway.
As travelers journeyed along the Pan-American Highway, a vital thoroughfare connecting nations and people, they encountered an extraordinary sight. Amidst the cacophony of vehicles and the rush of commuters, there, in the midst of it all, was a solitary and drenched puppy. He was a picture of adorable determination, standing vigilant and unyielding despite the perilous situation posed by the fast-moving cars.
Good Samaritans, concerned for the welfare of this brave little soul, approached the scene. While their hearts overflowed with compassion, they knew that their medical expertise was limited. Nevertheless, they wasted no time in providing the shivering pup with nourishment and comfort. Despite his ordeal, he appeared to be in relatively good condition.
However, the puppy’s anxiety became palpable when he heard the distant barks of other canines. Fearing for his safety amidst the chaotic traffic, the caretakers made the heart-wrenching decision to isolate him in an unoccupied enclosure. There, in this temporary refuge, the puppy was given a name – Pingan – and began his journey toward recovery and a brighter future.
Pingan, with his infectious spirit, quickly captured the hearts of those who crossed his path. But he bore a physical reminder of past challenges – a missing limb, which required extra care and attention. With regular treatments and unwavering care, Pingan began to thrive. He radiated energy and zest for life.
Perhaps the most heartwarming aspect of this tale is the special bond that blossomed between Pingan and another resident of his newfound sanctuary, a furry friend named Doudou. Doudou seemed to embrace the role of a motherly figure for Pingan, offering him companionship and support as he adjusted to his new life.
Observing Pingan as he settled into his safe and nurturing environment served as a poignant reminder of the profound importance of providing proper care to animals, especially those in need. It reaffirms our duty as compassionate beings to extend a helping hand to those who require it most. Knowing that Pingan now has a warm and secure home, surrounded by love and care, brings immeasurable joy to all who played a part in his journey.
In a world often marked by the relentless march of time and technology, it’s stories like Pingan’s that serve as timeless reminders of the enduring bond between humans and animals. It’s a bond that transcends language, borders, and even the bustling traffic of a major highway, reminding us all of the beauty of compassion and the extraordinary journeys that can unfold when hearts are open to the call of those in need.
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