https://www.nytimes.com/2020/09/30/health/pfizer-covid-vaccine.html
...Pfizer begins looking for sick volunteers seven days after the second dose, ... And Pfizer’s plan allows an outside review panel to look at early data after just 32 volunteers have become ill with Covid-19. ...
...Across all of its trial sites, Pfizer said, 24,000 volunteers have received the second dose of the vaccine, more than half of the 44,000 that are expected to enroll...
...Dr. Mark Goldberger, an infectious disease expert at the Global Antibiotic Research and Development Partnership and a former F.D.A. official, noted that the agency has scheduled a meeting of outside experts to discuss experimental coronavirus vaccines on Oct. 22.
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