Pfizer’s COVID-19 vaccine prevents 90% of infections in large study

pfizers covid 19 vaccine prevents 90 of infections in large study

Sumary of Pfizer’s COVID-19 vaccine prevents 90% of infections in large study:

  • 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..
  • If the data hold up and a key safety readout Pfizer expects in about a week also looks good, it could mean that the world has a vital new tool to control a pandemic that has killed more than 1.2 million people worldwide..
  • However, the strong reading from the first large-scale trial to post efficacy results bodes well for other experimental vaccines, in particular one being developed by Moderna Inc..
  • So far, the trial data monitoring committee has identified no serious safety concerns, Pfizer and BioNTech said..
  • Pfizer had originally planned to conduct a first analysis of trial data after just 32 virus cases had occurred in the trial, which has enrolled 43,538 volunteers in multiple countries..
  • regulators, Pfizer and BioNTech said they recently elected to drop the 32-case analysis and conduct the first analysis at a minimum of 62 cases, one of several changes made in the trial-analysis plan..
  • While Pfizer conducted those negotiations, it paused testing of participant samples for the virus, said Gruber..
  • By the time Pfizer had made the changes in the trial plan and restarted virus testing a few days ago, some 94 cases had occurred, far more than the trial needed to meet the new threshold…

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