Succeeded in getting dogs to identify COVID-19 positives with 97% accuracy

PCR tests, antigen tests, antibody tests, etc. are used to determine whether or not you are infected with the new coronavirus that has been prevalent since the end of 2019. A research team led by Professor Dominique Granjan of the Faculty of Veterinary Medicine, Alfort National University in France has published a paper on how to make dogs smell the patient's sweat and determine it with 97% accuracy for infection testing of the new coronavirus. did.

Diagnostic accuracy of non-invasive detection of SARS-CoV-2 infection by canine olfaction | PLOS ONE

Dogs can detect Covid with high accuracy, even asymptomatic cases

Test methods for distinguishing diseases such as cancer , malaria , and epileptic seizures have been studied for a long time, and methods for distinguishing dogs from whether they are infected with the new coronavirus are also being studied in each country.

Dogs can be trained to sniff out the new coronavirus-GIGAZINE

Professor Granjan was originally researching whether colorectal cancer could be squeezed out in dogs, but in 2020 he switched his research target to the new coronavirus infection (COVID-19). A research team led by Granjan trained five dogs and conducted an experiment to reward them with toys when they detected that the odor sample was COVID-19 positive. Sweat from 335 subjects was prepared as an odor sample, and 109 of the subjects were diagnosed as positive by PCR.

According to the research team, dogs took only 15 seconds to analyze a sample with 97% accuracy, of which 91% was for COVID-19-negative samples. The researchers argue that the dog-squeezing test is less invasive than the PCR test, which puts a cotton swab in the nose and throat, and has the advantage of immediate results, except for training time.

In addition, the research team reports that the method of squeezing in dogs succeeded in squeezing 100% even asymptomatic in the early stage of the disease, which is more accurate than the PCR test. The researchers said that a person who was negative on the PCR test but positive on the dog's test could be diagnosed as positive on the PCR test two days later.

However, Dr. Cynthia Otto, director of the Working Dog Center at the University of Pennsylvania Veterinary Medicine, said that positive toy enhancements are not effective for all dogs, and that COVID-19 can be detected in sweat and clothing. He points out that it is not always possible to detect when faced with a real human, and points out that it takes advanced skills to train dogs to a practical level for COVID-19 infection testing. ..

Dr. Otto said, 'This is one of the big challenges, but we need to be trained to detect the scent of COVID-19 not only from the scent of the sample, but also from the more complex scent of the whole human being. Some people may want their pets to scent COVID-19, but don't try it at home. '

in Science,   Creature, Posted by log1i_yk