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.
“After 15 Years, Dog’s Tearful Birthday Celebration with First-Ever Cake”
Amidst the charming locality where cheerfulness reverberated in every nook and cranny, a delightful event was taking place. A furry companion, who had been waiting for this moment for 15 years, was finally getting to relish the enchantment of a birthday gala – complete with a cake decked with twinkling candles.
At the appointed hour, a group of loved ones had gathered around in eager anticipation to witness a momentous event. At the center of attention was a faithful dog whose eyes shone with excitement and curiosity. The atmosphere was electric as everyone joined in singing the classic song of “Happy Birthday.”
The dog seemed to sense the importance of the occasion and responded with a contagious wag of its tail. The room was filled with an undeniable sense of happiness as the cake, complete with decorations suitable for dogs, made its way to the center of the gathering. Excitement reached its peak as the birthday girl blew out the candles, signaling the beginning of a new phase in her life. Love overflowed from every corner of the room.
But it wasn’t just the flickering candles that caught everyone’s attention. It was also the unexpected sight of a solitary tear rolling down the furry cheek of the dog. The room fell into a hushed silence as the observers exchanged glances filled with a mix of surprise and tenderness. This tear was a silent testimony to the years of unconditional loyalty and the simple desire for a moment of celebration, conveying a heartfelt message.
As the birthday cake was presented to the dog, the room erupted in cheers and applause. The dog, now surrounded by its loved ones, cautiously sniffed the cake before taking a tentative bite. The taste of the special treat seemed to transport the canine companion to a world of ecstasy, and in that magical moment, all the waiting became irrelevant.
The birthday festivities continued well into the evening, with plenty of merriment, amusing anecdotes, and the delightful sound of a dog’s happy barks. This was no ordinary party; it was a touching tribute to the passing of time and the unbridled joy that our furry friends bring into our lives. The celebration was a testament to patience, love, and the power of long-awaited reunions.
As the night wound down, the dog snuggled up in a cozy bed surrounded by the remnants of a joyous occasion. The earlier tears had melted away, replaced by the radiant glow of contentment shining from the canine’s eyes. It was an unforgettable gathering that would be treasured by all who were present, serving as a reminder that our loyal companions deserve their moment in the spotlight, regardless of how long it takes to arrive.
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