Minnesota Gov. Tim Walz announced that he has signed an executive order that requires residents to wear face coverings in indoor businesses and indoor public settings to slow the spread of coronavirus
From CNN's Tatiana Arias and Cristopher Ulloa
"The selected dogs have years working on the detection of drugs, explosives and other types of things. For them, it is simply learning to detect a new smell, a new aroma," Mardones said. "A body that contracts Covid-19 generates volatile organic compounds. A sample is taken from a person in the early stages of the infection. A gauze is left for about 15 minutes on an individual's underarm. That's the sample we store and use to train the dogs with," Mardones explained.
A dog can smell 250 people in an hour, so they can be deployed when these places reopen," Julio Santelices from the Chilean police said.
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