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Microbe contact → antibodies &/or T cells
Lasts a few years to life long
Ex: flu, cold, chicken pox
Naturally acquired active immunity
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Antibody donor → antibody recipient
Lasts weeks to months
Ex: mother to fetus, breast milk
Naturally passive immunity
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Microbe in Vaccination → antibodies
Lasts a few years to life long
History
1796 vaccine for smallpox developed by Edward Jenner
1952 vaccine for polio by Jonas Salk
Artificially acquired active immunity
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Types of Vaccines:
1.
2.
3.
- 1. Killed- flu, polio, rabies, Heb-B
- 2. Attenuated- alive nut not virulent
- 3. Toxoid- made from inactivated toxic compounds: pertussis, tetanus, diphtheria
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Antibody injection
Ex: Rabies
Artificially acquired passive immunity
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