23,000 of 30,000 currently enrolled @Pfizer/@BioNTech_Group program
1/
Then 2-3 weeks to get the full immune response.
Then exposure to infections
Then moderate or severe infections as events
2/
The 1st interim analysis is at 32 events
statnews.com/2020/09/02/exp… @matthewherper @statnews
Even 32 events for placebo, 0 vaccine (likelihood ~0) wouldn't cut it to stop 3/
Hard to imagine any trial would be stopped or confirmation of Pfizer's "We expect by end of October..."
by @Loftus @JaredSHopkins
wsj.com/articles/covid…