Pfizers preliminary numbers had 94 confirmed cases of Covid among the 44000 people enrolled in the trial. Eight received the vaccine, the other 86 recieved the placebo; thus ~90% effective. The new numbers are now 170 confirmed cases, still 8 were vaccinated, and the remaining 162 received the placebo, this now reporting 95% effective.
Moderna had 15000 vaccinated and 15000 with the placebo. At the time of reporting, 5 vaccinated got Covid and 90 placebo group got covid. This the 94.4% effectiveness
both numbers will likely continue to change before the final results of the study are published
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