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.
“From Broken to Resilient: The Inspiring Journey of a Homeless Canine’s Healing and Redemption”.
“Unfolding the Chronicles with a Homeless Dog, a Trembling Soul Navigating the Harsh Realities of Life on the Streets. His spirit was broken, and his heart bore the invisible scars of abandonment and neglect. Fear had become his constant companion, and he sought refuge in the shadows of a world that had shown him little kindness.
But amidst the indifference of the world, there were those who saw the urgency of his situation. Compassionate individuals, driven by empathy and a deep love for animals, recognized the urgency of his plight. Their hearts ached at the sight of a dog so scarred and broken, and they endeavored to offer him a lifeline of hope.
The road to healing was a delicate mission, marked by patience and gentleness. The scarred homeless dog, initially wary and fearful of human contact, was approached with utmost care. It took time, but slowly, trust began to form between the dog and his newfound caretakers. Commissioned by passion and genuine concern, they worked tirelessly to offer him a lifeline of hope.
The journey to healing was a turbulent path, a trial by fire to transform the broken spirit. He was gradually coaxed away from the shadows that had been his refuge, and his heart began to thaw in the embrace of love and reassurance. With each passing day, his fear gave way to trust, and his wounded soul found solace in the silent gestures of compassion.
The pivotal moment of rescue was a triumphant point in the dog’s life. He was gently coaxed away from the haunting memories of his rough background, and he found himself enveloped in an atmosphere of care and belonging. With each passing day, his fear transformed into courage, and he began to blossom in the warmth of genuine affection and understanding.
The dog’s journey from a place of darkness to the embrace of light is a poignant reminder of the capacity for compassion and intervention, even in the face of overwhelming fear and despair. The scarred homeless dog, once abandoned and broken, became a beacon of resilience and hope.
This tale is a testament to the power of resilience in the face of adversity, a celebration of the indomitable spirit that, despite all odds, strives for love and redemption. It stands as a reminder that, even in the darkest corners of life, there is always room for a brighter tomorrow, fueled by love, compassion, and the unyielding spirit to overcome.”
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