This test can detect coronavirus earlier and more accurately than a PCR test – BGR


  • Researchers have found that an unusual coronavirus diagnostic tool picks up the virus days before standard PCR tests are identified.
  • Dogs trained to detect the characteristic odor of COVID-19 patients may correctly identify those infected, and they do not make mistakes according to the new report.
  • PCR tests can give a false-negative result if taken in the first days after exposure to the virus, but researchers say that dogs do not have the same problems.

The last time we told of the very good boys ET, Kosi, Mina and Valo, we came to know that they all got jobs at the Helsinki airport running COVID-19 screening for incoming passengers. They will work in shifts of two, and they will smell coronovirus in people. ET, Cosi, Mina, and Valo are four dogs trained to detect a particular odor from coronavirus patients.

Doctors from various countries started training dogs to detect the smell of COVID-19 patients several months ago, and the results are about to be revealed. Finnish researchers have realized that dogs have the great advantage of regular PCR tests, as they can detect. The disease picks up the virus well before conventional tests.

A report from Time The researchers were initially surprised by COVID-19-sniffing dogs. The animals were identifying passengers at the airport who had the disease. When tested with regular PCR machines, the results were coming negative. It initially appeared that the dogs were producing false-positive results.

A few days later, people who tested negative began to prove that the dogs were right. A PCR test would pick up what the animals had done to detect the virus.

“They are actually finding PCR negatives that are going to be PCR positive in a week’s time,” said Dr. Anna Hilm-Borkman, one of the other researchers in countries using dogs for COVID-19 screening. Have seen the same behavior. “It’s a problem when you have a test that is much better than the gold standard because you can’t validate it in any general way.”

“PCRs are about 70 percent,” the researcher said of the false-negative results. “Good dogs are never less than 100 percent.”

If the COVID-19 test occurs too soon after exposure to the virus, there is a high probability that the result will be negative. The virus needs a few days to start multiplying before positive results come back. A few days before the onset of symptoms, the patients are actually contagious, at which point they test positive for the virus. If infectious, a patient rejects viral particles while talking, coughing or sneezing. The same particle ends on inflammation of the nose.

Coronavirus screening dog
A dog is sniffing samples at Helsinki Airport that may contain traces of the novel coronavirus. Image Source: Finlandia

The previous report reported that dogs are not actually exposed to passengers for safety reasons. He gave a wipe that the passengers used on their skin. The wipes are placed in a container, as shown in the image above, next to three other samples. The dog will then indicate a positive specimen by “yelping, pawing, or recumbent”.

Catching COVID-19 patients to dogs before PCR would be a great tool for screening purposes. Animals can be used in crowded spaces, such as at airports, to quickly identify potential asymptomatic broadcasters. The problem with this resource is that it is not measurable at all. Dogs need to be trained to detect odors, and they need to be protected. There have been cases where dogs have caught COVID-19 from their masters.

However, research makes a great point that COVID-19 can already be diagnosed compared to current PCR tests. It is unclear how PCR tests can be improved to provide faster results.

Chris Smith started writing about gadgets as a hobby, and before he knew it he was sharing his thoughts on tech stuff with readers around the world. Whenever he is not writing about gadgets, he badly fails to stay away from them, though he tries his best. But that is not necessarily a bad thing.

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