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.
The Heartwarming Story of a Woman’s Generosity Towards a Homeless Man and His Furry Companion Outside Walmart
As she gazed upon the sign, her heart felt heavy. In front of the Walmart, stood Patrick, a homeless man with a look of desperation in his eyes. However, unlike other beggars, he wasn’t holding up a placard begging for food or money for himself. Instead, his sign was requesting help for his closest friend. This scene touched her soul and inspired an act of kindness that could only be described as angelic.
In our society, it is not uncommon to see homeless people with their loyal pets by their side. While there are debates and criticisms regarding this practice, it usually only becomes an issue when the pet is put in danger. However, these individuals often go to great lengths to provide for their furry friends, making sure they are fed, sheltered, and have a place to call their own despite their living situation.
In Houston, Texas, a woman named Wilma Frice was touched by the sight of a homeless man standing outside Walmart. His sign was made from cardboard and read “Dog in pound, need help.” The message was simple, yet heart-breaking, as it showed the love and dedication of a pet owner who was experiencing tough times.
Patrick, a homeless person, wasn’t asking for help for his own benefit. He wasn’t looking for food or money from people who walked by him. Instead, he was making a plea to those with kind hearts to help his beloved companion, Franklin. Unfortunately, Franklin had been taken to the pound because Patrick couldn’t afford the $120 required to get him out.
Wilma Frice expressed her thoughts about meeting Patrick to People.com, describing him as a gentle and kind person who was going through tough times. She noticed a sadness in his eyes, similar to that of a young boy who had experienced a significant loss.
Upon receiving the necessary funds from Wilma, Patrick took to Facebook to express his gratitude and share a heartfelt message. As someone who is currently homeless, he was deeply moved by the kindness of Franklin and his owner. Patrick’s life’s work has been dedicated to helping homeless animals, and he hopes that his actions will inspire others to do the same. He reminds us that we all have the potential to experience difficult circumstances, and it’s essential to empathize with those who are struggling. Patrick is committed to ensuring that the animals he cares for have everything they need and never end up back on the streets. He feels grateful for the unconditional love he has received from these animals and hopes to continue making a difference in their lives.
Kindly take some time to spread this incredible story among your loved ones. It serves as a gentle nudge that extraordinary acts of kindness can come from unexpected sources. In times of need, an angel may just appear before us- just like what happened to this man.
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