Covid Vaccinations May Start December: Vanderbilt’s Schaffner

Nov.09 — William Schaffner, Vanderbilt University School of Medicine professor, says he's "guardedly optimistic" a Covid-19 vaccine developed by Pfizer Inc. may be used to protect health-care workers before the end of the year. He speaks with Bloomberg's Alix Steel on "Bloomberg Markets."

Watch the video at Bloomberg – Corona Outbreak