Vaccination is the administration of a microorganism in the body to help the immune system develop protection from a disease.
It is one of the most important ways to prevent children and adults from getting some dangerous disease, by exposing them to a germ in a controlled way. Vaccines teaches the body how to recognize and fight it.
Vaccination is a simple, safe, and effective way of protecting you against harmful diseases, before you come into contact with them. It uses your body’s natural defenses to build resistance to specific infections and makes your immune system stronger.
Vaccines train your immune system to create antibodies, just as it does when it’s exposed to a disease. However, because vaccines contain only killed or weakened forms of germs like viruses or bacteria, they do not cause the disease or put you at risk of its complications.
Most vaccines are administered by an injection, but some are given orally (through the mouth) or sprayed into the nose.