As always, the place to go for good commentary is Derek Lowe's blog. https://blogs.sciencemag.org/pipeline/archives/2020/11/16/modernas-vaccine-efficacy-readou

As always, the place to go for good commentary is Derek Lowe's blog. https://blogs.sciencemag.org/pipeline/archives/2020/11/16/modernas-vaccine-efficacy-readout https://blogs.sciencemag.org/pipeline/archives/2020/11/16/mo... He points out that the standard being adopted by these studies for the point efficacy is 14 days after the second dose. That's honestly not too bad. It's no magic bullet, but it's survivable.