What has Pfizer’s Covid vaccine trial found and is this a breakthrough?

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Sumary of What has Pfizer’s Covid vaccine trial found and is this a breakthrough?:

  • Pfizer and the German biotech company Biontech said on Monday that they had had encouraging early results from a phase 3 clinical trial of their coronavirus vaccine..
  • Pfizer and Biontech say they looked at 94 cases of coronavirus that occurred among participants after they had received two shots of either the vaccine or the placebo, and found that the vaccine was more than 90% effective at seven days after the second dose..
  • The vaccine in question is based on genetic material called mRNA that enables the production of the “spike proteins”…

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