The concept of immunizing children was implemented to reduce the spread of diseases, and it has proven to be successful with several diseases.
There are diseases which may in rare cases cause inability and sometimes may result in death.
Immunizing your child drastically reduces the risk of your child getting affected by such diseases. Diseases like small pox and polio have been successfully eradicated. As a community, if we are aware and immunize our children, other serious diseases will also be successfully eradicated.