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epa09278653 A photo taken through a window glass shows a Thai trainer watching a COVID-19 sniffing Labrador Retriever dog named 'Nasa' sitting down after detecting a COVID-19 infection from canisters containing human sweat samples, inside a Dog Olfactory Mobile Vehicle for Viral Inspection during a media preview at Chulalongkorn University in Bangkok, Thailand, 17 June 2021. Thailand deployed a Dog Olfactory Mobile Vehicle for Viral Inspection with six trained COVID-sniffing Labrador Retriever dogs to sniff out human sweat collected from residents in the outbreak communities to detect the perspiration scent of coronavirus disease (COVID-19) patients as an effort to contain the ongoing rapid spreading of the pandemic in Bangkok. The dogs have been trained to sit down immediately when detecting the perspiration scent of COVID-19 infections with an accuracy rate of nearly 95 percent in detecting both symptomatic and asymptomatic patients. EPA/RUNGROJ YONGRIT