5 Late-Stage COVID-19 Vaccines: Which Is Likely to Be the Biggest Winner?

There are currently 166 novel coronavirus vaccine candidates in development, according to the World Health Organization (WHO). Twenty-four of those candidates are being evaluated in clinical trials in humans. Most of those are in early-stage clinical studies. However, five COVID-19 vaccine candidates are either currently in late-stage clinical testing or are scheduled to begin a phase 3 study in the next few days.