Dr. Paul Spiegel, director of the Center for Humanitarian Health at the Johns Hopkins Bloomberg School of Public Health, discusses the clinical trials of a coronavirus vaccine and his concerns about migrants, asylum seekers and refugees not receiving the health care needed to help protect against the COVID-19 pandemic. He speaks with Bloomberg's Vonnie Quinn on "Bloomberg Markets." The Bloomberg School of Public Health is supported by Michael R. Bloomberg, founder and majority owner of Bloomberg LP, the parent company of Bloomberg News. (Source: Bloomberg)