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.
The dog’s warm embrace of the 2-year-old reassured her parents as they left for work
In the bustling city where people are always on the move, finding moments of true connection can be a rarity. However, a heartwarming incident involving a dog and a 2-year-old child recently captivated the hearts of many, highlighting the profound and unconditional love animals can offer. The moment when this dog embraced the child, enveloping her in warmth and comfort, became a testament to the deep affection it held for the little girl, ultimately providing her parents with peace of mind as they headed off to work.
The dog in question is a lovable Golden Retriever named Max. Max has been a part of the Nguyen family for three years, and throughout this time, he has formed a special bond with the youngest member of the family, little Mia. Mia, a charming and curious 2-year-old, has grown up alongside Max, and their relationship has flourished from the very beginning.
One sunny morning, as Mia’s parents, Lily and Mark, were preparing to head to their respective workplaces, they were faced with a familiar dilemma. They were once again entrusting their precious child to the capable care of their loyal canine companion, Max. However, on this particular morning, something extraordinary happened.
As Lily handed Mia over to Max, something unexpected occurred. Instead of simply sitting by her side or following her around, Max gently leaned in, as if sensing Mia’s need for comfort. He lowered himself to the ground and extended his front paws, inviting the little girl into a warm and loving embrace. Mia, ever the intuitive child, responded by snuggling closer to Max’s furry chest, wrapping her tiny arms around him.
This tender embrace lasted for several minutes, and it seemed as if time stood still. The whole scene was a testament to the profound connection between the child and her four-legged friend. In that moment, Max’s warm, furry body and comforting presence were all Mia needed to feel safe and secure. The world outside, with its complexities and uncertainties, faded away, leaving just the two of them wrapped in an unspoken bond of love.
Lily and Mark watched in awe, touched by the undeniable affection that their dog had for their daughter. Max, who had been a faithful companion and protector for Mia since her birth, had now shown an even deeper level of care and concern for her well-being. In that brief yet profound moment, they realized that they could trust Max with Mia, knowing that he would always keep her safe.
As Lily and Mark went off to work that day, they left with a newfound sense of peace and assurance. They knew that Max would watch over Mia, just as he had done during countless other moments, with his unwavering love and dedication. Their family’s bond had grown stronger, and they were grateful for the incredible connection between their daughter and her canine friend.
This heartwarming incident serves as a reminder of the extraordinary relationships that can form between humans and their animal companions. It demonstrates the capacity of animals to offer love, support, and comfort when we need it most. The story of Max and Mia also reminds us that the world can be a better place when we open our hearts to the unconditional love that our animal friends are willing to share.
In a busy, fast-paced world, the touching moment when a dog lovingly embraced a 2-year-old child became a symbol of the pure, unbreakable bond between animals and humans. Max’s profound love for Mia provided her parents with a sense of security and peace, reminding us all of the extraordinary connections that can exist between pets and their families.
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