Dr. Eric Topol: The CDC Was a “No-Show for the Pandemic”

COVID numbers in general are coming down in the U.S. But the good news is tentative. Viral variants appear to be increasingly widespread, an important reminder that people must keep their guard up. Dr. Eric Topol, a professor of molecular medicine and director of the Scripps Research Translational Institute, is one of the country's top medical researchers. He joins Walter Isaacson.