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
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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.”
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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.
She Used to Cry a Lot After Enduring a Lot of Pain BUT Now She Truly The Pride of Her Family.
Amber has arrived! This morning, a kind soul saw her in a ditch in Lancaster County, South Carolina, a gray beauty torn apart by hideous brutality. Amber’s face was a terrible mess of bruises, infected beyond measure, necessitating quick reconstructive surgery.
Her nasal canal was torn as a result of the cruelty she was subjected to, leaving her gasping for air. Her suffering was compounded by a broken jaw and displaced teeth, and her once perfect nose was now torn apart. Due to the severity of her injuries, the medical team had to sedate her to perform a CT scan, which was unprecedented in their experience.
Amber, who was just two years old, had her whole life ahead of her despite her small body and severe malnutrition. She was sedated daily for nearly five days as committed specialists worked tirelessly to give her a new lease on life. Amber’s face has been repaired and her nasal passages cleared as a result of their steadfast commitment, but the swelling serves as a reminder of her grief.
Her beautiful demeanor was unaffected, a monument to her fortitude in the face of tragedy. Amber showed tremendous courage and love as she healed and faced the hardships of heartworm treatment and sterilization.
She relaxed after a filling lunch and finally cuddled into her blanket for a restful night’s sleep. Today, she went for a walk in her new neighborhood under the warm sunshine with her new siblings, Jack and Alice, clear evidence that she has found comfort and security in her new home.
Amber would like to express her deep gratitude to all of her amazing friends who supported her journey, thought of her as she embarked on her path to a better life, and loved her unconditionally.
Ember’s adventure can be followed on Instagram.
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