Active Immunity

∞ generated and posted on 2020.12.17 ∞

Acquisition or accumulation of B or T memory cells.

Active immunity generally describes one means by which future resistance to pathogens and parasites is acquired rather than the immunity that is displayed in the course of that resistance (the latter, adaptive immunity).

Active immunity often is acquired in the act of developing immunological resistance to pathogens or parasites, thereby described as naturally acquired active immunity, contrasting artificially acquired active immunity which is a response instead to immunization.

See also adaptive immunity. See by contrast also passive immunity.