Published: 12 February 2023
Author(s): Alfredo Jose Pardo-Cabello, Victoria Manzano-Gamero, Juan de Dios Luna
Issue: June 2023
Section: Letter to the Editor

The current pandemic of coronavirus disease 2019 (COVID-19) caused by Severe Acute Respiratory Syndrome CoronaVirus-2 (SARS-CoV-2) prompted the rapid production of vaccines against the virus. In view of the seriousness of the situation, the European Medicines Agency (EMA) quickly approved several COVID-19 vaccines: the tozinameran mRNA (produced by Pfizer-BioNTech), the CX-024414 mRNA (by Moderna), the chimpanzee adenoviral vector CHADOX1 NCOV-19 (by AstraZeneca), and the adenoviral vector type 26 AD26.COV2.S (by Janssen).

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