Trained dogs were better at detecting positive Covid cases than a rapid antigen test, a study found.
The new study was conducted in early 2021, so the dogs were identifying the original coronavirus. Dominique Grandjean, one of the study’s authors and a professor at the Alfort National Veterinary School in France, said he’s now examining how well dogs pick up on variants.
But Dr. Cynthia Otto, director of the Penn Vet Working Dog Center at the University of Pennsylvania, said it's difficult to train dogs to detect Covid in the real world. The dogs then sniffed 335 sweat samples, 109 of which were positive on PCR lab tests. Each sample was placed in a tiny box behind a cone, with the cones lined up in rows of 10. If a dog thought it detected a positive case, it would sit down.
Still, Grandjean said, dogs offer a couple advantages for Covid testing: They’re less invasive than a nasal or throat swab and provide more immediate results .
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