Please actually look at the change history in https://clinicaltrials.gov/ct2/history/NCT04368728 https://clinicaltrials.gov/ct2/history/NCT04368728 The complet

Please actually look at the change history in https://clinicaltrials.gov/ct2/history/NCT04368728 https://clinicaltrials.gov/ct2/history/NCT04368728 The completion date was changed multiple times since April 2020 and they clearly appended booster trials to the existing trials and pushed back the dates. It truly is that simple.