Pfizer Says Experimental COVID-19 Vaccine Is More Than 90% Effective
By JOE PALCA Originally published on November 9, 2020 8:30 am Pfizer’s experimental COVID-19 vaccine appears to be working. The vaccine was found to be more than 90% effective, according to clinical results released by the company Monday. That news comes from an interim analysis of a study involving 43,538 volunteers, 42% of whom had “diverse…