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The world needs more vaccines against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus that causes coronavirus disease 2019 (Covid-19), in order to mitigate the tragic health and socioeconomic consequences of the pandemic. Even

Vaccine safety is critical for the successful implementation of any vaccination program, especially during a pandemic. In February 1976, the Centers for Disease Control and Prevention confirmed a cluster of cases of severe influenza-like illness