Literature Review of the Published Human Clinical Trials: On COVID-19 Vaccines

Abstract

Emergency situations as COVID-19 pandemic require emergency authorizations; these are intended to shorten the time for each of the phases of the clinical trials or as termed by Pfizer ‘Project Lightspeed’ [1]. The aim is to have an effective vaccine that could offer protection to the population and end the pandemic in the most urgent and efficient way possible, as time elapsed equals the loss of more lives.