Passive immunity

Definition

Passive immunity is the temporary immunity acquired by an organism through the transfer of antibodies from another source, rather than producing them through its own immune system. It provides immediate protection against pathogens but does not offer long-lasting immunity.

Related terms

Antibodies: Proteins produced by the immune system that recognize and neutralize foreign substances like bacteria and viruses.

Active Immunity: The long-term immunity that results from the production of antibodies by the body in response to an antigen.

Antigen: Any substance that triggers an immune response in the body, often part of a harmful organism like a virus or bacteria