Review:
Passive Immunity
overall review score: 4.5
⭐⭐⭐⭐⭐
score is between 0 and 5
Passive immunity is a form of immunity conferred by the transfer of pre-made antibodies from one individual to another, providing immediate but temporary protection against specific pathogens or toxins. Unlike active immunity, which involves the body's own immune response, passive immunity offers rapid defense without requiring the recipient's immune system to produce its own antibodies.
Key Features
- Immediate protection following administration
- Temporary immunity lasting from a few weeks to several months
- Involves transfer of externally produced antibodies (e.g., from serum or mother to child)
- Used in cases of exposure or high-risk situations
- Does not stimulate long-term immunological memory
Pros
- Provides rapid protective effect against infectious agents
- Useful in emergencies, such as exposure to rabies or tetanus
- Can be administered to immunocompromised individuals who cannot mount an adequate immune response
- Offers passive protection until active immunity develops (e.g., via vaccines)
Cons
- Immunity is short-lived and requires repeated doses for ongoing protection
- Potential for allergic reactions or serum sickness with some antibody sources
- Limited to specific pathogens; does not provide broad-spectrum defense
- Does not induce long-lasting immune memory, so it is not a substitute for vaccination