What is the name of the model that explains how infection is passed from one host to another, including Infectious Agent, Reservoir, Portal of Exit, Mode of Transportation, Portal of Entry, and Susceptible Host?

Prepare for the Nurse Aide I Module B – Infection Prevention Test. Leverage multiple choice questions, detailed flashcards, and comprehensive explanations. Ensure your readiness for the exam!

The chain of infection explains how an infection is passed from one person to another by linking six parts: infectious agent, reservoir, portal of exit, mode of transmission, portal of entry, and susceptible host. This model is the framework used in infection prevention to identify where to intervene and break the spread. The reason this is the best answer is that it names the overall model that ties all six elements together; it’s not just a single component like the mode of transmission, a portal of exit, or the susceptible host. Those terms describe one part of the process, whereas the chain of infection encompasses all links and shows how removing or interrupting any one link stops transmission. Understanding this helps you target prevention steps—hand hygiene to block transmission, proper isolation to protect hosts, cleaning to remove the reservoir, and so on.