Pfizer’s COVID-19 vaccine is 90% effective, preliminary trial data show
November 09, 2020
Mark Slifka, Ph.D., and Louis Picker, M.D., comment on early results from the Pfizer COVID-19 vaccine trial. Slifka says: “It’s early, but we can be cautiously optimistic. By hitting greater than 90 percent, that’s where we want to see successful vaccines.” Picker notes the early results are promising and that more work is needed.