Question

Immunity accquired after an infection is

• A. Active immunity
• B. Passive immunity
• C. Innate immunity
• D. Both B and C

Answer 1

Answer: (A)

Active immunity

Active immunity is the induction of immunity after exposure to an antigen. Antibodies are created by the recipient and may be stored permanently due to the activation of memory cells which recognizes the same antigen in future and destroy them. Active immunity can occur naturally when a microbe or other antigen is received by a person who has not yet come into contact with the microbe and has no pre-made antibodies for defence.

So, the correct answer is 'Active immunity'.