AdvertisementCoronavirus Testing Machines Are Latest Bottleneck In Troubled Supply Chain05:15Download AudioResumeMay 28, 2020Joel RosefacebookEmailMedical personnel test people in vehicles for COVID-19, at Annandale High School, in Annandale, Va., on May 23. There's a new bottleneck emerging in coronavirus testing: A shortage of the machines that process the tests and give results. (AP)