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First dose of Pfizer-BioNTech COVID-19 vaccine candidate variant is the likely cause of new coronavirus variants

First dose of Pfizer-BioNTech COVID-19 vaccine candidate variant is the likely cause of new coronavirus variants

Unlike traditional vaccines that have been used for decades against diseases such as measles and polio, COVID-19 vaccines do not contain a weakened or inactive form of the virus itself. Instead, they use messenger RNA (mRNA) to instruct / program the immune system to recognize and react to a component of the coronavirus that is […]