COVID-19 Vaccines: A Guide to the Different Types and Their Effectiveness

Pfizer-BioNTech COVID-19 vaccine (Comirnaty): This is a messenger RNA (mRNA) vaccine. mRNA vaccines teach cells to make a protein that is similar to the spike protein on the surface of the COVID-19 virus. This helps the body develop immunity to the virus. The Pfizer-BioNTech vaccine is given as two shots, 21 days apart. Moderna COVID-19 vaccine (Spikevax): […]

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