There's new research going on right now at the University of Pennsylvania’s School of Veterinary Medicine, where eight labrador retrievers are being trained to detect (sniff out) COVID-19, according to The Philadelphia Inquirer.

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Over a three-week period, the labradors are exposed to COVID-19-positive saliva and urinary samples.

The big question is once the dogs learn the odor from COVID-19, can they tell the difference between positive and negative samples? If so, the dogs would then get tested on whether or not they can detect the virus in infected people, including those who experience the virus asymptomatically.

If the research goes well, these virus-detecting dogs could be used as early as July.

Dogs could be a noninvasive way to screen people at airports, buses, and hospitals.

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