Dogs were more effective at detecting positive cases of Covid-19 through human sweat samples than nasal antigen tests, a PLOS ONE study found.
Dogs were more effective at detecting positive cases of Covid-19 through human sweat samples than nasal antigen tests, a
study conducted by researchers affiliated with the Assistance Publique-Hôpitaux de Paris found, suggesting a potentially less invasive and quicker Covid testing alternative.In the study, dogs were 97% effective at detecting a positive case of Covid compared to PCR tests—the most accurate Covid test—while nasal antigen tests detected 84% of positive Covid infections.
The study—which included PCR and sweat samples from 335 people and antigen tests from 234 people recruited from two community Covid testing centers in Paris from March 16 and April 9 2021—found canines were 100% accurate in detecting positive Covid cases in asymptomatic individuals compared to PCR test results.
Canines were slightly less effective at identifying negative coronavirus infections, detecting 90% of negative cases compared to antigen tests that were 97% accurate.To carry out the study, researchers created 10 stations with human sweat swabs placed behind cones so canines would avoid direct contact with potentially infectious samples.
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