Monday, August 23, 2021, marked the day for the Pfizer-BioNTech COVID-19 vaccine to be officially approved by the Food and Drug Administration (FDA). Pfizer-BioNTech COVID-19 vaccine is the first vaccine to be authorised under the name of FDA for 16 years and above. Pfizer-BioNTech COVID-19 vaccine was put in the third phase of a clinical trial in November 2020. In December 2020, the Pfizer-BioNTech COVID-19 vaccine was approved by the United Kingdom, making it the first vaccine to be authorised for use on an emergency basis. It was previously approved as an Emergency Use Authorization (EUA) vaccine, but now it is fully approved to be utilised by 16 years and above of age. However, EUA is still applied only for