Question

What is an immunization? How does vaccination help in preventing diseases?

Answer 1

This is a process of making an individual’s body protected against many infectious diseases for the entire lifetime. This process sometimes involves the use of injection or in some cases liquid drops are used.

Complete answer:
A process in which a person is made resistant or immune to an infectious disease by using a vaccine is known as immunization.when the vaccine is given to the person it stimulates the person's immune system to protect itself against the subsequent disease and in this way the person develops immunity against that particular disease.
Vaccines help in preventing infectious diseases and save our lives. They are responsible for controlling many infectious diseases. Every individual is born with a full immune system composed of cells, glands, organs, etc that is present in an individual's body to fight against invading bacteria and viruses. This immune system recognizes the foreign body entering our body and produces protein substances called antibodies to fight against them.
A vaccine consists of either killed or greatly weekend organisms that cause disease, known as an antigen. When these antigens are injected through vaccines in our body they are not that strong to produce the symptoms of the disease in our body but they are strong enough for our immune system to produce antibodies against them to counteract that disease in the future. In this way through vaccination, our body is protected against diseases that can cause harm to our body.

Note: -Vaccines are used to help our immune system to fight infections faster and more effectively.
-The antibodies against any disease remain in our body for lifetime protection against diseases.
-Prevention from any disease is always better than cure. Nowadays vaccines are available for many infectious diseases such as polio, measles, diphtheria, whooping cough, rubella, mumps, tetanus, influenza, etc.