Booster

A booster is an additional dose of a vaccine given after the initial series to enhance or prolong the immune response. Its purpose is to “boost” the body’s ability to recognize and defend against a specific disease, especially if immunity from the original doses wanes over time or new variants emerge. By reinforcing the immune system, boosters help maintain protection and reduce the risk of illness, contributing to ongoing community health. They are an important tool in disease control, ensuring that immunity remains strong and effective over the long term.