Answer:

A vaccine (or immunization) is a WAY to build up your body's natural immunity to a disease. This keeps you from getting and spreading the disease. Vaccines provide a buildup of antibodies before you get SICK. That way, you don't have to go through the symptoms of the illness.

Explanation:

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.

Immunization is a proven tool for controlling and eliminating life-threatening infectious diseases and is ESTIMATED to avert between 2 and 3 million deaths each year. It is one of the most cost-effective health investments, with proven strategies that make it accessible to even the most hard-to-reach and vulnerable populations. It has clearly defined target groups; it can be delivered EFFECTIVELY through outreach activities; and vaccination does not require any major lifestyle change.