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.
15 Pics That Prove Every Second With Your Loved Ones Is a Treasure to Keep
Reuniting with loved ones, helping those we care about, or a simple photoshoot with our kids and pets can make even a few minutes feel magical. All the better if we take photos of those moments. This way we can be reminded of them and ignite a warm spark inside of us, even if we feel down.
We at <strong>Bright Side have a soft spot for family and friends and we just can’t resist sharing our latest compilation of special moments that people shared on the internet.
1. “My son teaching his little sister how to walk from his wheelchair.”
2. “My husband rooting for our daughter is the energy I need this week.”
3. “Today we celebrated one year of beating a tumor. My wife made me a cake! Yea, my son is trying to steal it.”
4. “Surprised my friend by bringing him to a zoo where he got to pet his favorite animal, a sloth. His face says it all.”
5. “A ‘photoshoot’ my husband did while I was at work. If this doesn’t make you smile, I don’t know what will.”
6. “6 months meets 96 years — my Nana held her first great-granddaughter for the first time ever today!”
7. “Family moment 30 years ago with my mom and grandpa.”
8. “It took me nearly 26 years to find my father and his family. This is my newborn daughter and my uncle (my father’s brother).”
9. “I met my father for the first time in my (now) 29 years. We decided to have a ‘1st birthday’ on my 29th birthday.”
10. “I was a donor to my sister’s girlfriend and I’m now a proud uncle to my donor child.”
11. “My 96-year-old great-grandma with my kids and I. So thankful she’s in our lives!”
12. “Our flight got canceled for my birthday trip, and I missed the fancy pedicure we had booked. My husband surprised me the next day.”
13. “Met my internet best friend of 7 years for the first time!”
14. “My friend giving the neighborhood kids a huge box of chalk.”
15. “My daughter and I vs My granddaughter and I”
Which one touched your heart the most? Do you have a story with your loved one that you would like to share?
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Preview photo credit poohseph / reddit
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