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The upcoming discussion will update you about the difference between active immunity and passive immunity.
Difference # Active Immunity:
1. Host participation:
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Produced actively by the immune system of host.
2. Activation:
Induced by infection or by contact with immunogen.
3. Duration of effectivity:
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Immune response-durable and effective.
4. Time:
Immunity effective only after lag period.
5. Memory:
Immunological memory present.
6. Duration:
Subsequent challenge with booster dose more effective.
7. Negative phase:
After antigenic stimulus, negative phase may occur due to antigen combining with any pre-existing antibody in blood.
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8. Purpose:
Serves no purpose in immuno deficient host.
9. Uses:
Used for prophylaxis to increase body resistance.
Difference # Passive Immunity:
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1. Host participation:
Received passively by the host; no active host participation.
2. Activation:
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Conferred by introduction of ready- made antibodies.
3. Duration of effectivity:
Immune response—short lived and less effective.
4. Time:
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Immediate immunity.
5. Memory:
No immunological memory.
6. Duration:
Subsequent administration of antibody less effective due to immune elimination.
7. Negative phase:
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No negative phase.
8. Purpose:
Applicable in immuno deficient host.
9. Uses:
Used for treatment of acute infection.
