Which statement describes artificial passive immunity?

Which statement describes artificial passive immunity?

• A. Receiving antibodies through an injection, such as immunoglobulin therapy.
• B. Immunity gained by natural exposure to an antigen.
• C. Immunity produced by vaccination with a weakened pathogen.
• D. Immunity developed after infection and recovery.

Answer: (A)

Passive immunity means you receive antibodies produced by someone or something else rather than making them yourself. Artificial passive immunity is when those antibodies are provided directly through a medical injection. This gives immediate protection, but it’s temporary because your own immune system isn’t activated to create its own antibodies or memory cells. Immunoglobulin therapy or antivenoms are classic examples. The other scenarios describe active immunity, whether natural or artificial: natural exposure to an antigen leads your body to produce its own antibodies and memory; vaccination with a weakened pathogen stimulates your immune system to generate antibodies and memory; immunity after recovering from infection results from your own immune response.

Passive immunity means you receive antibodies produced by someone or something else rather than making them yourself. Artificial passive immunity is when those antibodies are provided directly through a medical injection. This gives immediate protection, but it’s temporary because your own immune system isn’t activated to create its own antibodies or memory cells. Immunoglobulin therapy or antivenoms are classic examples.

The other scenarios describe active immunity, whether natural or artificial: natural exposure to an antigen leads your body to produce its own antibodies and memory; vaccination with a weakened pathogen stimulates your immune system to generate antibodies and memory; immunity after recovering from infection results from your own immune response.