 "Coronavirus, vaccine, covid")
The Covid-19 vaccine being developed by Pfizer Inc. and BioNTech SE prevented more than 90% of infections in a study of tens of thousands of volunteers, the most encouraging scientific advance so far in the battle against the coronavirus.
Eight months into the worst pandemic in a century, the preliminary results pave the way for the companies to seek an emergency-use authorization from regulators if further research shows the shot is also safe.
The findings are based on an interim analysis conducted after 94 participants contracted Covid-19. The trial will continue until 164 cases have occurred. If the data hold
