what word is used to describe injecting a small amount of an inactivated pathogen into the body to stimulate immunity?

The word you’re looking for is vaccination.

Quick Scoop

When a small amount of an inactivated (dead or harmless) pathogen is injected into the body to stimulate the immune system, that process is called vaccination.

• The substance being injected is called a vaccine.

• Vaccination trains the immune system to recognize the pathogen and respond faster and more strongly in the future, providing immunity.

In short: injecting an inactivated pathogen to stimulate immunity = vaccination.

TL;DR: The word is vaccination.

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