Question

What is immunization? How can the function of immune system be improved? How does it function

Answer 1

Immunization is the process whereby a person is made immune or resistant to an infectious disease, typically by the administration of a vaccine. Vaccines stimulate the body's own immune system to protect the person against subsequent infection or disease.

functioning of immune system ---
Eat plenty of vegetables, fruits, nuts, and seeds, which will provide your body with the nutrients your immune system needs. A study in older adults showed that boosting fruit and vegetable intake improved antibody response to the Pneumovax vaccine, which protects against Streptococcus pneumonia. Consider probiotics..

Answer 2

immunization means to create a resistance against a foreign antigen or body.
Immunity can be natural ie innate. or actively or passively acquired.

Immunization improves the immune system by making it resistant to an antigen which it had not previously encountered with..... thus memory cells are already made and hence when a body is attacked by such an antigen against which the immunization has been done then the antibodies are quickly made and the disease is remove without much wear or tear of the body cells...