A leading coronavirus vaccine candidate just started human trials in the US. Pfizer's chief scientist told us how it could be ready for emergency use this fall. (PFE, BNTX)

3:45am PDT - May 5th, 2020    moderna - Business Insider

• Pfizer and BioNTech have started testing their coronavirus vaccine candidates in healthy volunteers in the US.
• Mikael Dolsten, Pfizer's chief scientific officer, told Business Insider this experimental vaccine could be ready for emergency us…