Boosters work by re-exposing the immune system to the antigen, the component of the pathogen that elicits an immune response. This re-exposure stimulates memory cells, which are part of the immune system's adaptive response, to produce more antibodies and strengthen the immune response. The process involves:
1. Memory Cells: Re-activation of memory B cells and T cells that were generated during the initial vaccination. 2. Antibody Production: Increased production of specific antibodies to fight the pathogen. 3. Immune Response: A faster and more robust immune response upon subsequent exposure to the pathogen.
