Dr. Carlos Del Rio, Emory School of Medicine executive associate dean, suggests day 1 to 6 to quarantine and masking, but if the patient tests negative on day 7 to end the quarantine. This could reduce the strain on health workers, he says. Meg Tirrell joins Shep Smith to discuss what the Covid-19 test turnaround times are across the U.S., as well as new CDC recommendations for quarantining.