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 Heart-Wrenching Ordeal: A Dog’s Suffering, Chained, Malnourished, and Thirsty on a Balcony
Owning a pet is a significant commitment that entails a substantial responsibility for their safety and well-being. These living beings are entirely reliant on their owners for care and protection.
Recently, concerned citizens stumbled upon a heart-wrenching scene, where a dog dangled precariously from a balcony, teetering on the brink of tragedy. Fortunately, a swift rescue mission prevented any harm from befalling the desperate canine.
What they encountered on that balcony, however, shocked them more profoundly than the impending disaster itself. The dog, a German Shepherd, was discovered alone on the balcony of an apartment in Egypt. What added to the distressing scenario was the revelation that the dog had endured days of being tethered to the balcony without access to food or water. It appeared famished, and its leap from the balcony seemed to be a final, desperate bid to escape the deplorable conditions.
Regrettably, a chain bound the dog’s neck, rendering it incapable of freeing itself. The poor animal was left hanging over the balcony, choking and helpless. Even if not for the chain, the height of the balcony, three stories above the ground, would have posed a grave risk to the dog.
Miraculously, a man heard the anguished cries of the German Shepherd and rushed to its aid. Another neighbor had already attempted a rescue but had been unsuccessful. With the newcomer’s assistance, they managed to retrieve the dog back onto the balcony.
It was evident that the chain had inflicted severe lacerations on the dog’s neck, although, fortunately, they were not life-threatening. The living conditions on the balcony were nothing short of deplorable, with the dog confined amidst its filth, deprived of both sustenance and hydration.
The dog, with lacerations on its neck from the constricting chain, was subsequently transported to the Egyptian Society for Mercy to Animals shelter. Here, it received the necessary medical attention for its injuries and underwent treatment for any illnesses or ailments it may have acquired during its harrowing confinement. Skilled veterinarians successfully mended the lacerations and administered the care needed for a full recovery.
After a few weeks of treatment, the German Shepherd, now named Bella, was transferred to the Special Needs Animal Rescue & Rehabilitation shelter. From there, she embarked on a journey to the United States, where a loving family had eagerly adopted her. Showered with the love and compassion she deserved, Bella could finally heal from the trauma of her past life in the grim balcony confinement.
Bella made a remarkable recovery and found contentment with her new family. She became a cherished companion to her new guardians and an integral part of their household, leaving behind the horrors of her previous existence on that unforgiving balcony.
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