Question

Differentiate between :

Active immunity and passive immunity

Answer 1

Active immunity:

1. Active immunity is developed due to the production of antibodies in one’s own body.
2. It is present in our body since childhood.

Passive Immunity:

1. This is developed by antibodies that are produced outside and then introduced into the body.
2. They are basically termed ready-made antibodies.

Active immunity	Passive Immunity
1. Active immunity is usually permanent – it is produced by the antibodies of the host in response to direct contact with an antigen.	1. Passive immunity lasts only for a few weeks or months. It is produced by the introduction of antibodies from outside to the host.
2. It produces an immunological memory, it works according to the memory stored in them.	2. It does not produce immunological memory as it has not developed any memory against diseases.
3. There are no side effects of active immunity.	3. There are some side effects of passive immunity.
4. This immunity does not occur immediately.	4. This immunity occurs immediately.