IMMUNOLOGY

Detailed explanation-1: -Vaccines boost our immune system by developing immunity against disease-causing pathogens. Vaccines prevent us from many fatal diseases. It also reduces the risk of infection transmission from one person to another.

Detailed explanation-2: -Vaccines contain dead or weakened microbes of a particular disease. When a vaccine is introduced into a healthy body, the body fights and kills them by producing suitable antibodies. These antibodies remain in the body and protects it from the microbe when it invades the body again.

Detailed explanation-3: -People who’ve been vaccinated and those of us who’ve also had COVID-19, which many people have, appear to be protected for at least six months and generally much longer after being vaccinated with their primary series of the COVID-19 vaccine.