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.
Sad shelter puppy becomes ecstatic when the firefighter who saved her shows up to adopt her
It’s a heartbreaking reality that some people can abandon their dogs, leaving them to fend for themselves in the harshest conditions. Yet, in the midst of these tales of abandonment and neglect, there are always shining examples of compassion and hope that remind us of the goodness in the world.
The story of Chunkie, a sad shelter puppy, is one such tale that warms the heart and reaffirms our faith in humanity.
Chunkie’s journey began in despair. She was chained and left exposed to the elements, a heartbreaking sight that no dog should ever endure. But fate had other plans for her, and her guardian angel appeared in the form of firefighter Mike Thawley from Sacramento’s Fire Station 14. When he stumbled upon Chunkie, weak, ill, and tied to a post in the pouring rain, he knew he couldn’t simply walk away.
Mike’s first act of kindness was to clean her up and ensure she received the immediate care she so desperately needed. He rushed her to the Front Street Animal Shelter, refusing to abandon her in her time of need.
Upon examination, it became clear that Chunkie had a severe case of mange, and her skin was in a terrible state. However, the dedicated staff at the shelter wasted no time in treating her ailments and providing her with warm clothing to protect her delicate skin. It was evident to everyone that Chunkie was immensely grateful for her newfound safety and care.
But what tugged at the heartstrings even more was the bond that had formed between Chunkie and her rescuer, Mike. Their connection was undeniable, and it was clear that Chunkie had grown fond of the firefighter who had saved her life.
The touching moment of reunion between Chunkie and Mike, captured on camera, melted hearts and brought tears of joy. It was a testament to the deep bond that can develop between humans and animals, forged through acts of kindness and compassion.
In a heartwarming twist to this tale, firefighter Mike Thawley decided to make Chunkie a permanent part of his family. It was a moment of celebration as Chunkie transitioned from a life of despair and uncertainty to one filled with love, care, and companionship.
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Chunkie’s story is a shining example of the difference one person can make in the life of an abandoned and suffering animal. It’s a reminder that compassion knows no bounds, and it can transform lives in the most unexpected ways.
As we celebrate this heartwarming rescue and reunion, let us also use it as a reminder of the countless animals around the world who need our help and compassion. By sharing this story, we can spread awareness and support for all dogs, reminding the world that every pup deserves a chance at a loving home.
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