Pfizer-BioNTech (COVID-19 Vaccine)

The Pfizer-BioNTech COVID-19 vaccine is a shot that helps protect against COVID-19 by instructing your immune system to recognize and fight the virus. It uses messenger RNA (mRNA) technology to deliver genetic instructions that tell cells to produce a harmless piece of the virus (the spike protein). This prompts the immune system to develop a response without illness. The vaccine has been shown to be highly effective in preventing severe illness, hospitalization, and death related to COVID-19. It is administered in two doses, typically a few weeks apart, and is a key tool in controlling the pandemic.