| The Emergency Use Authorization (EUA) acted as a critical regulatory pathway for therapeutics and vaccines throughout the Coronavirus Disease 2019 (COVID-19) pandemic. |
| The EUA process demonstrates the dynamic nature of scientific review practices as characterized by emergency authorizations, expansion of the authorizations, and withdrawal of previously authorized products. |
| EUAs were of critical utility in countering the pandemic and proved a remarkable regulatory framework for a monumental pharmaceutical achievement. |
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