Immunization is the process that happens in the human body when a vaccination is received. Immunization prepares your immune system to fight off the diseases included in the vaccine. Many people use the word immunization interchangeably with vaccination, but they aren’t the same thing.

There are a wide variety of immunizations available for painful, dangerous, and life-threatening diseases. Immunizations reduce the incidence of preventable diseases. This preventive approach keeps healthcare costs down and allows healthcare resources to focus more attention on people in need of care. Most importantly, it saves lives. Healthcare professionals have created a series of immunization charts to show when people should be vaccinated.

Many people get an immunization at the doctor’s office from a nurse or another healthcare professional.