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.
Furry Guardian: When Cries Emerge, Dog Comforts New Baby with His Beloved Toy
Creativity in storytelling allows us to explore heartwarming and touching tales of the unique bond between pets and babies. Most pets, even the largest and toughest dogs, have the potential to become the first best friends of infants. This story revolves around Bonnie Michalek and her pet bullmastiff Brutus, portraying the incredible sensitivity and love that dogs can exhibit towards children.
For Bonnie and her husband, Brutus was not just a pet; he was family, often referred to as their “first baby.” When Bonnie became pregnant with their actual first child, Brutus displayed an extraordinary sense of protectiveness even before she realized she was pregnant. Bonnie attested to Brutus “knowing” about her pregnancy before she did, and this reassured them that he would be comfortable with the new addition to the family.
Brutus had always displayed an affection for children, getting excited whenever he heard kids outside laughing. His connection with children became even more evident when Bonnie introduced baby Kayden to him. Brutus greeted the newborn with love, gently licking the baby’s face.
The bond between Brutus and Kayden deepened as they became close buddies. Brutus was not only willing to protect Kayden but also to share his most cherished possession, a yellow plush ball that he clung to dearly. This ball was the only toy he wouldn’t destroy in a matter of minutes. Whenever Kayden cried, Brutus would instinctively find his beloved fluff ball and offer it to comfort the baby.
This touching story of Brutus exemplifies the love and care that pets can provide to babies, highlighting the unique connection that can develop between them. Brutus’s willingness to comfort and protect Kayden illustrates the incredible bond that can form between pets and children. It’s a heartwarming tale that reminds us of the genuine love and loyalty that dogs can offer to their human family members. Share this beautiful story to celebrate the enduring bond between pets and babies.
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