Artificially acquired passive immunity is characterized by:

Artificially acquired passive immunity is characterized by:

• A. A short-term immunity provided by antibodies administered that are not produced by the recipient's own immune cells.
• B. Long-term immunity from a vaccine.
• C. Antibodies pass through placenta.
• D. Live vaccines containing attenuated organisms.

Answer: (A)

Artificially acquired passive immunity involves giving someone preformed antibodies from an outside source. This provides immediate protection, but it is short-term because these antibodies are not produced by the recipient’s own immune system and memory cells are not created. In contrast, natural passive immunity (antibodies crossing the placenta) is not artificial, and vaccines create active immunity by stimulating the person’s immune system to produce its own antibodies and memory for longer-lasting protection. Live vaccines are a form of active immunization, not passive.

Artificially acquired passive immunity involves giving someone preformed antibodies from an outside source. This provides immediate protection, but it is short-term because these antibodies are not produced by the recipient’s own immune system and memory cells are not created. In contrast, natural passive immunity (antibodies crossing the placenta) is not artificial, and vaccines create active immunity by stimulating the person’s immune system to produce its own antibodies and memory for longer-lasting protection. Live vaccines are a form of active immunization, not passive.