Vaccination Immunity Type — NDEB AFK MCQ
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Correct answer: D — Artificial active immunity
Vaccination provides artificial active immunity — the immune system is stimulated to produce its own antibodies and memory cells in response to an administered antigen (attenuated, inactivated, or subunit vaccine). Natural active immunity occurs from natural infection. Passive immunity (transfer of preformed antibodies) can be natural (maternal IgG crossing placenta) or artificial (antiserum/immunoglobulin injection). Active immunity provides longer-lasting protection than passive.
Reference: Abbas – Cellular and Molecular Immunology, 10th ed., 2021