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.
13 Celebrities That Seem to Have Discovered the Secret of Youth
There must be something rejuvenating in that Hollywood water! That’s a thought we all have in our heads from time to time when looking at pictures of forever fresh stars that seem to not have understood the concept of time. While we count how many new grey hairs grew this month, these celebrities keep on shocking us with the inconsistency of their age and their appearance.
Here at Bright Side, we love following celebrities, especially if it seems like they know the secrets of staying young and fresh forever. There’s definitely something we need to learn from them.
1. Eve, 1992 vs 2019
Eve started her career at a young age and has over 20 years of being under the spotlight. Now she’s 42, and it looks like years haven’t left any marks on her.
2. Gabrielle Union, 2009 vs 2021
The Bring It On and Being Mary Jane star shared that at 48 she has a few rules that boost her glow. She drinks enough water, makes sure she gets at least 8 hours of sleep, and exercises.
3. Queen Latifah, 1987 vs 2020
The Oscar-nominated, Grammy- and Emmy-winning singer and actress turned 51 on March 18. Queen shares that she does eat a lot of vegetables and lean meats, hydrates religiously and thinks that as long as you’re young at heart, your actual age doesn’t really matter.
4. Alicia Silverstone, 1992 vs 2020
The Clueless star, who is 44 years old, says that her diet is the secret to her youth — Alicia is vegan and leads an eco-friendly lifestyle. She shares that once she gave up meat and dairy, she started looking better after just 2 weeks.
5. Jeremy Piven, 2005 vs 2021
The famous American actor and comedian shared that he lifts weights, jumps rope, and does jiujitsu. He also said in an interview that he has been doing yoga for decades and goes for a run when he wakes up.
6. Alfre Woodard, 1995 vs 2020
Alfre Woodard is now 68 years old, but looking at her pictures from the past, it feels like she just changes outfits and hairstyles, but doesn’t age at all.
7. Jamie Foxx, 2004 vs 2021
There is always a question when it comes to Jamie Foxx — how does he still look as young as he did in the 2000s? Back then, when he was 33, he had his own series, The Jamie Foxx Show. Today, he’s 53 and still a popular actor that seems to have found the fountain of youth.
8. Sharon Stone, 2002 vs 2021
The 63-year-old actress shares that her secret of youth is something she took from her mom — she shares that she gave her a jar of moisturizer and told her to clean her skin and moisturize morning and night, and that’s what she does.
9. Bianca Lawson, 1991 vs 2019
Bianca Lawson has played teenagers on-screen since 1993 and it’s really no surprise why. The Buffy The Vampire Slayer and Pretty Little Liars star is 42, but you can’t tell since her glowing skin looks like it’s ageless. Bianca shares that she prefers natural sweeteners to sugar and tea to coffee and believes that youth is a mentality, so to stay young you have to reduce stress and enjoy life.
10. Alicia Keys, 1997 vs 2021
The 40-year-old singer not only looks young and fresh, but she also manages to look younger than her years without wearing heavy makeup — she advocates for embracing natural beauty and actually has incredible skin. Her routine includes jade rolling, oils, and cucumber pulp.
11. Elizabeth Hurley, 2001 vs 2021
Today the British model is 54 years old, but in her latest Instagram posts, she legitimately looks like a girl in her 20s. And though it looks effortless, she does put a lot of effort into it. Her methods are hydration, a balanced diet, and workouts. For example, Elizabeth does squats while brushing her teeth and considers gardening her main form of exercise.
12. Helena Christensen, 1998 vs 2020
It’s hard to believe, but the famous supermodel turns 52 this year, showing her flawless body on her Instagram account. Helena shared that in Denmark, where she’s from, people are taught to not hide anything when it comes to what nature gave them.
13. Janet Jackson, 1998 vs 2020
The music legend turned 55 in May and it seems like 20 years have left no marks on her face. Jackson doesn’t really share her secrets to staying young, though she mentioned that she has a mostly plant-based diet, doesn’t eat meat, and that she has a long-term relationship with fitness.
What’s your secret to staying youthful? We’d be happy to see your comments in the section below.
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Preview photo credit John Mathew Smith / Wikimedia Commons, CC BY-SA 2.0, janetjackson / instagram
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