NEET Biology
NEETBiologyHuman Health & DiseaseClass 12

What does “Active vs passive immunity” actually mean in Human Health & Disease, and why does it matter for NEET?

active immunity is when the body makes its own antibodies; passive immunity is receiving ready-made ones.

In simple words: active immunity is when the body makes its own antibodies; passive immunity is receiving ready-made ones. Getting Active vs passive immunity clear matters because NEET questions on Human Health & Disease usually test this idea directly, not just a formula you memorised.

Key point

Active vs passive immunity

Common mistake

calling a vaccine passive immunity.

Memory tip

a vaccine triggers your OWN antibodies → active; antivenom is ready-made → passive.

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