. The dogs are trained for a short period of time to smell secretions from patients with COVID-19, and taught to behave in a certain way when it’s detected.
Training involves repeatedly exposing dogs to samples, like clothing or bodily fluids that contain the scent of interest, along with control samples. “When the dogs alert to the scent of interest, they receive positive reinforcement,” Moore explains. Finland’s Helsinki airport has also been using COVID-sniffing dogs since September. In that situation, travelers are asked to swipe their skin with a wipe that is then put into a jar and given to a dog waiting in a separate booth, per the“There may be some promise with this,” says infectious disease expert, senior scholar at the Johns Hopkins Center for Health Security. “They’re letting in fans anyway, so it’s probably better than nothing.
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