Question

give reason.
why do we require booster dose ?​

Answer 1

Explanation:

In medical terms, a booster dose is an extra administration of a vaccine after an earlier (primer) dose. After initial immunization, a booster injection or booster dose is a re-exposure to the immunizing antigen. It is intended to increase immunity against that antigen back to protective levels, after memory against that antigen has declined through time. For example, tetanus shot boosters are often recommended every 10 years, before which memory cells specific against tetanus have lost their function or undergone apoptosis.[1]