Pfizer-BioNtech vaccine

Pfizer-BioNtech is a COVID-19 vaccine that releases messenger RNA into the body to instruct the immune system to produce antibodies against spike proteins. The spike protein released by the vaccine is similar to the spike protein released by the SARS-CoV-2 virus. This is to train immune system to provide immune response against the virus attacks. The UK and Bahrain have approved emergency authorisation of this vaccine.