Question

What are immunization?
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Answer 1

Answer:

Immunization (or vaccination) protects people from disease by introducing a vaccine into the body that triggers an immune response, just as though you had been exposed to a disease naturally.

Explanation:

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Answer 2

The method to boost our immune system with the help of vaccines that help the body to fight against infectious diseases is called $\small\mathcal\blue{Immunization}$.