Learned Covid

• Since the initial reporting of the novel coronavirus, medical understanding of Covid-19 has evolved significantly regarding transmission and prevention. • In December 2020, the US FDA granted emergency use authorization to Pfizer/BioNTech and Moderna vaccines after clinical trials showed over 90% effectiveness. • These early findings were critical in establishing a baseline for preventing symptomatic disease during the first wave of vaccinations.

• Since the initial reporting of Covid-19, medical understanding has evolved significantly regarding the virus's behavior and the effectiveness of countermeasures. • In December 2020, the US FDA granted emergency use authorization to Pfizer/BioNTech and Moderna vaccines after clinical trials demonstrated over 90% efficacy in preventing symptomatic disease. • These findings highlighted the critical role of rapid vaccine development in controlling the spread of the novel coronavirus during the height of the pandemic.