A patient gives a saliva sample at a drive-through Covid-19 testing site in Salt Lake City, Utah. The test is less invasive than the more common PCR nasal swab and does not require as many nursing staff. Bing Guan / Reuters
A patient gives a saliva sample at a drive-through Covid-19 testing site in Salt Lake City, Utah. The test is less invasive than the more common PCR nasal swab and does not require as many nursing staShow more