‘A protective bubble’: Covid-sniffing dogs help scientists – and Metallica – spot infection

Researchers find four dogs can identify biomarkers associated with the virus with 97.5% accuracy

With a sense of smell up to 100,000 times more sensitive than humans’, dogs have been employed in the service of sniffing out everything from contraband to crop molds to cancer.

Yet while researchers first began exploring whether canines could be effective agents in the fight against Covid-19 early in the pandemic, only in recent months have conclusive, peer-reviewed studies begun verifying the hypothesis that dogs know Covid when they smell it.

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