Key Record Dates
ClinicalTrials.gov Identifier: | NCT04981405 |
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Brief Title: | Real-world Evidence of COVID-19 Vaccines Effectiveness |
First Submitted : | July 26, 2021 |
First Submitted that Met QC Criteria : | July 26, 2021 |
First Posted : | July 29, 2021 |
Last Update Submitted that Met QC Criteria : | July 19, 2022 |
Last Update Posted : | July 22, 2022 |