Pfizer and BioNTech Have Enrolled 83% of Their Up-Sized Coronavirus Vaccine Trial

Pfizer (NYSE:PFE) has now enrolled 36,576 participants in the late-stage clinical trial of its coronavirus vaccine candidate, BNT162b2, which it's developing with BioNTech (NASDAQ:BNTX). Last month, the companies increased their planned enrollment in the study from 30,000 to approximately 44,000, meaning that it is currently 83% enrolled.