Active immunity and passive immunity.
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Active immunity occurs when our own immune system is responsible for protecting us from a pathogen. Passive immunity occurs when we are protected from a pathogen by immunity gained from someone else.
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Active immunity
- It is a type of acquired immunity in which the body produces its own antibodies against disease causing antigens.
- It is a type of acquired immunity in which readymade antibodies are transferred from one individual to another.
- It has a long lasting effect.
- It is slow. It takes time in producing antibodies and giving responses.
- Injecting microbes through vaccination inside the body is an example of active immunity.
Passive immunity
- It is a type of acquired immunity in which readymade antibodies are transferred from one individual to another.
- It does not have long lasting effect.
- It is fast. It provides immediate relief.
- Transfer of antibodies present in the mother’s milk to the infant is an example of passive immunity.
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