A "double mutant" COVID-19 strain that was first identified in India has now been found in California.
While this case may be the first here in the US, seven more are suspected.
Medical Monday: 'Double mutant' variant
CBS 5 SF KPIX
CBSN Bay Area's Anne Makovec talks to Dr. Dean Winslow with Stanford Health Care about we know about the 'double mutant' variant..
