Probably the first time I properly understand what 95% efficacy actually means. And well if CDC experts can get it wrong, im not surprised that everyone has been interpreting it differently.https://twitter.com/zeynep/status/1361429445232500739 …
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I recall that the initial threshold for vaccine effectiveness for FDA approval was 50%. But as per this def, that would imply the control and the treatment group have the same number of COVID cases, and thus the vaccine is ineffective (in layman terms). Did I get this right?
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