January 2022 is the second anniversary of the identification of Coronavirus disease 2019 (COVID-19) 1 caused by severe acute respiratory syndrome (SARS) coronavirus 2 (SARS-CoV-2). Scientifically, during the COVID pandemic, we have come a very long way in a very short period of time and demonstrated the power of twenty-first century science and technology when a pandemic situation catalyzed the adoption of novel vaccine technologies at record speed. Rapid sequencing of the virus genome allowed initial development to start in January 2020 2 and we had our first authorized vaccines by December 2020 3 .
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Barrett et al. (2022) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: