Fig. 1.

A conceptual diagram of the components of hybrid immunity. The schematic diagram illustrates the robustness of hybrid immunity, which is much stronger than natural immunity and vaccine-generated immunity. It has been noted that hybrid immunity is produced when natural immunity is associated with vaccine immunity, and this immunity shows several folds higher antibody responses than other immunity. The components of immunity are observed as antibodies, memory B cells, CD4⁺ T, and CD8⁺ T cells. The four components of immunity (antibodies, memory B cells, CD4⁺T, and CD8⁺ T cells.) have been shown through pie charts for natural immunity, vaccine-generated immunity, and hybrid immunity. The pie chart and the bar diagram were generated on a conceptual basis to provide a graphical view, and no specific data were used for these cases.