Dogs can sniff out COVID-19

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Trained dogs can identify people with COVID-19, even those with no symptoms, according to researchers. In the preliminary study published on Thursday in PLoS One.

Dogs who sniffed swab samples of armpit sweat could tell which samples came from COVID-19 patients and which were from people who tested negative for the new coronavirus.

That study was conducted in March. More recently, the researchers have validated the findings in additional trials, said study leader Dominique Grandjean of Alfort Veterinary School in France.

Dogs can identify infected individuals with 85% to 100% accuracy and rule out infection with 92% to 99% accuracy, Grandjean said. “It takes one tenth of a second for a trained dog to say ‘yes’ or ‘no’,” he said.