Use your knowledge of the humoral immune response to explain a vaccination programme

Interesting topic with regards to COVID-19A vaccine introduces a foreign pathogen into the body. This foreign body stimulates the innate immune response which occurs regardless. The process of phagocytosis occurs, resulting in the pathogen antigens being presented on their surface. These phagocytes travel to lymph glands near by to present these antigens to other immune cells; such as B cells. These B cells, specific to the antibody then proliferate via mitosis. The result is a production of plasma cells and memory cells. These memory cells circulate around in the body ready for another infection by the specific antigen. This is known as the adaptive or humoral immune response.After a reinfection for the second time these circulating memory cells become activated and proliferate forming plasma cells and more memory cells. Antibodies are secreted at a far higher concentration, destroying the pathogen before it causes harm.