Which of the following is NOT a link in the chain of infection?

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Study for the Nassau County Tattoo and Body Piercing Certification Exam. Prepare with flashcards and multiple-choice questions, each with hints and explanations. Get ready for your test!

Multiple Choice

Which of the following is NOT a link in the chain of infection?

Explanation:
The chain of infection is made up of steps that must all occur for an infection to spread: the infectious agent (pathogen), the place where it lives or persists (reservoir), a route for the agent to exit the reservoir (portal of exit), a way it can be transmitted (mode of transmission), a route to enter a new host (portal of entry), and a susceptible host who can become infected. Immunity is not one of these steps; it’s the body's defense that can prevent infection by stopping one of the links, but it isn’t itself a link in the chain. So immunity isn’t part of the chain, while pathogen, reservoir, and host are.

The chain of infection is made up of steps that must all occur for an infection to spread: the infectious agent (pathogen), the place where it lives or persists (reservoir), a route for the agent to exit the reservoir (portal of exit), a way it can be transmitted (mode of transmission), a route to enter a new host (portal of entry), and a susceptible host who can become infected. Immunity is not one of these steps; it’s the body's defense that can prevent infection by stopping one of the links, but it isn’t itself a link in the chain. So immunity isn’t part of the chain, while pathogen, reservoir, and host are.

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