[Gossypiboma]

Originally Posted by fiveohwblow

https://www.statnews.com/2020/11/12/...s-complicated/



The study completion date for AstraZeneca is years out with the primary completion date of March 2021.

https://clinicaltrials.gov/ct2/show/NCT04516746

Thats simply how large clinical trials work. Initially there is a scheduled end date for the trial, but if the therapy being investigated proves to be a success before the end date there is no reason to continue the trial. That would be unethical to know that the vaccine works but continue to give patients a placebo for an additional year.