Question

why is vaccination considered a prevention of diseases

Answer 1

vaccines contain the same antigens that cause disease . so it is considered a prevention of diseases

Answer 2

Vaccination is like a training course that trains a body against agents that causes infections and diseases.

It works by preparing body against microbes by introducing microbes inside the body in a suppressible form without exhibiting any signs or symptoms. When the body is introduced by a cause of disease already it starts producing soldiers when real invaders attack the body.

In this way, it can protect a body from disease and prevent its spread.