A sniffer dog takes part in an experimental training to detect COVID-19 through sweat, at the Campus Bio-medico University Hospital in Rome on March 31, 2021. (Photo/Agencies)
An instructor poses with his sniffer dog during an experimental training to detect COVID-19 through sweat, at the Campus Bio-medico University Hospital in Rome on March 31, 2021. (Photo/Agencies)
A sniffer dog takes part in an experimental training to detect COVID-19 through sweat, at the Campus Bio-medico University Hospital in Rome on March 31, 2021. (Photo/Agencies)
