How does vaccination confer immunity to a person?

The dead or inactive form of the pathogen stimulates the adaptive immune system. It forces white blood cells to form antibodies against the pathogen, so that if a future invasion by the same pathogen was to occur, the body would have a quicker and stronger response. Ideally, this would mean the infection is fought off before any symptoms can manifest.

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Answered by Anushka J. Biology tutor

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