Michael talks with Elias Zerhouni about the best ways of slowing the spread of coronavirus and whether we can trust the new information about the disease coming out of China about its toll. Dr. Elias Zerhouni is a scientist, radiologist and biomedical engineer who spent much of his career on the faculty of the Johns Hopkins University School of Medicine, serving as its executive vice-dean, and was the Director of the National Institutes of Health from 2002 to 2008, in the George W. Bush administration.