The main reason for immunizing children is to stimulate the production of antibodies. Immunization, also known as vaccination, is a process that involves introducing a weakened or dead pathogen or a part of it into the body of an individual, usually through injection. The body then responds by producing specific antibodies to fight the pathogen. The antibodies are produced in large numbers, providing immunity to the individual against that particular disease. Immunization helps to prevent the spread of infectious diseases and protects individuals, especially children, from serious and life-threatening illnesses.