Passive immunity is provided by injecting microbes deliberately during immunization into the human body.When ready-made antibodies are directly given to protect the body against foreign agents, it is called passive immunity.It is used when the immune response has to be faster.It is a part of acquired immunity.It stays for a short period.
For example
- Immunity given to the infant by antibodies in colostrum.
2.Immunity given by tetanus antitoxin.