CHICAGO/NEW YORK (Reuters) - Nearly a fifth of 11,000 people enrolled so far in a 30,000-volunteer U.S. trial testing a COVID-19 vaccine from Pfizer
"Between Latinx and Black or African American populations, we're running at about 19 percent or so," Dr. Bill Gruber, Pfizer’s senior vice president of vaccine clinical research and development, told Reuters in an interview.