Pfizer vaccine

The Pfizer vaccine is a type of COVID-19 vaccine that uses messenger RNA (mRNA) technology to protect against the virus. It instructs our cells to produce a harmless piece of the virus called the spike protein. This trains the immune system to recognize and respond to the actual virus if encountered, preventing illness. The vaccine is given in two doses a few weeks apart and has been shown to be highly effective at reducing severe COVID-19 cases, hospitalizations, and deaths. It undergoes rigorous testing for safety and efficacy before approval and ongoing monitoring.