SARS-CoV-2 mRNA vaccine PTX-COVID19-B safe and highly immunogenic in preclinical study

COVID-19, the coronavirus disease of 2019, is one of the worst pandemics in human history. It emerged in December 2019 and is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Nearly 164 million SARS-CoV-2 infections and 3.4 million deaths have been reported globally since the beginning of the pandemic, which is still raging in many countries.
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