Real-World Effectiveness and Noninferiority Evaluation and Comparison of Messenger RNA-Based and Protein-Based COVID-19 Vaccines: Protocol for the BEEHIVE Randomized Study With a Hybrid Effectiveness Design
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Background: Surveillance of COVID-19 vaccine effectiveness (VE) was extensive upon vaccine introduction; however, it declined after the withdrawal of pandemic status in May 2023. Continued monitoring of updated vaccine formulatio... ...
