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.
A Pup’s Party of One: A Story of a Forgotten Birthday Bash.
In the world of our beloved pets, birthdays hold a special significance. It’s not just another day on the calendar, but rather a momentous occasion when love and affection abound, and tails wag with boundless excitement. Nevertheless, there’s a unique tale of a dog who has realized that sometimes, birthdays can be a lonely affair, even for our four-legged companions
As the sun peeked over the horizon, a small furry friend with a wistful gaze welcomed the day. It was the dog’s special day, one that typically brings merriment, well-wishes, and a delectable cake decorated with glowing candles for humans. However, the dog noticed something peculiar – nobody seemed to remember. The hours ticked by, and the dog’s heart sank deeper into solitude, yearning for a pat on the head or a jubilant chorus of “Happy Birthday.” But alas, the silence remained. As the day progressed, the dog’s mind raced with questions, “Am I not significant? Does no one care?”
The dog’s heart felt heavy due to the absence of well-wishes from family and friends. It did not receive any cheerful phone calls, cards, messages, or even a simple text with a “Happy Birthday” message. As a result, the dog felt unimportant and forgotten. Despite this, the dog found comfort in the presence of its human. The familiar scent and reassuring presence of the person who had always been a source of love and support brought solace to the dog. In the absence of external celebrations, the dog sought joy in simple pleasures such as a gentle pat or a favorite treat.
However, the day lacked the festive atmosphere that is typical of birthdays. There were no balloons, streamers, singing, or laughter. The dog particularly missed having a birthday cake, a symbol of celebration and a treat that signifies a special day for both dogs and humans. The absence of the sweet, fluffy delight left a void in the dog’s heart.
Nevertheless, the dog found comfort in the furry companion by its side. Although equally uninterested in fanfare, the furry friend was content to share the solitude without judgment or disappointment. To this canine companion, the dog was simply a friend, perhaps feeling a little downcast but a friend nonetheless.
As the dog was alone, it began to contemplate the true meaning of birthdays. It realized that it had been placing too much importance on external validation and grand gestures. Birthdays were about more than just celebration; they were about connection, love, and being in each other’s company. The dog came to a realization that it was not unimportant or unloved, but instead valued for the everyday moments spent with its human and furry companion. This newfound appreciation filled the dog with gratitude for the companionship it had, instead of focusing on what it didn’t have on that particular day. As the day came to an end, the dog found comfort in the embrace of its human and the warmth of its furry friend. Although the day was not marked by extravagant celebrations, it was filled with simple togetherness and the profound understanding that significance was not measured by grand gestures, but by the bonds we create and cherish every day. This valuable lesson was learned on a quiet, uncelebrated birthday, shared with those who truly mattered.
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