The Covid-19 vaccine from Pfizer and BioNTech appears to protect against viruses carrying at least one of the key mutations found in two coronavirus variants that are causing rapid spread across the UK, according to a study. Quick guide How does the Pfizer/BioNTech Covid-19 vaccine work? Show Hide The Pfizer/BioNTech Covid jab is an mRNA vaccine. In the case of an mRNA vaccine, the virus’s mRNA is injected into the muscle, and our own cells then read it and synthesise the viral protein. The two first Covid-19 vaccines to announce phase 3 three trial results were mRNA-based.

Source: The Guardian January 08, 2021 11:43 UTC