Both active and passive immunity can be acquired though natural or artificial means.

Question

Quizplus · Accepted Answer

Active immunity is acquired when exposure to a disease triggers the immune system to produce antibodies, either naturally (through infection) or artificially (through vaccination). Passive immunity is acquired by receiving antibodies, either naturally (from mother to baby) or artificially (through antibody-containing blood products).

Both Active and Passive Immunity Can Be Acquired Though Natural